New Holland T6010, T6020, T6030, T6050, T6070 Delta and Plus Tractors. Operator's Manual

SECTION 3 -- FIELD OPERATION

To activate the Auto function, engage the P.T.O. as

previously described and then depress and hold the

AUTO side of the switch (1), for more than one

second. The Auto P.T.O. lamp on the instrument

panel will illuminate to confirm activation.

With the 3 point hitch in the lowered position and the

P.T.O. engaged, the Auto lamp will remain on.

Raising the implement will disconnect P.T.O. drive

and cause the Auto lamp to flash. Lowering the

implement will re--engage P.T.O. drive, the Auto lamp

will cease to flash and will remain on.

Depressing the Auto P.T.O. switch again will

de--activate the function and the Auto lamp will

extinguish.

NOTE: The Auto P.T.O. function will be de--activated

every time the key start is switched off.

With Mechanical Draft Control

The P.T.O. will be disengaged one second after the

fast raise switch (1) is moved rearwards to the raise

position. P.T.O. drive will re--engage one second

after the hitch lowering switch (2) is fully depressed

to lower the 3--point hitch.

3--28

SECTION 3 -- FIELD OPERATION

Auto P.T.O. De--Activation

With either Electronic Draft Control or Mechanical

Draft Control, Auto P.T.O. will be de--activated should

one or more of the following occur:

• The tractor speed is above 0.5 Km/h (0.3 MPH)

with the 3 point hitch in the raised position for

more than 2 minutes.

• With the 3 point hitch raised, the tractor speed

falls below 0.5 Km/h (0.3 MPH), or the tractor is

stationary for more than 10 seconds with the

3--point hitch in the raised position.

• If oneof theexternalswitchesforP.T.O.or3point

hitch are operated.

• The P.T.O. is switched off using the internal or

external switches.

• Operating both internal and external P.T.O.

switches simultaneously.

• Ground drive P.T.O. is selected.

• The operator leaves the seat for more than 2

minutes with Auto P.T.O. activated and the 3

point hitch in the raised position.

To re--activate Auto P.T.O., clear the error and

re--engage the function as previously described.

NOTE: The Auto P.T.O. function will be de--activated

every time the key start as switched off.

3--29

SECTION 3 -- FIELD OPERATION

GROUND DRIVE P.T.O. (where fitted)

Three-speed ground drive P.T.O. is available on all

models in conjunction with the

3-speed

engine-driven, shiftable P.T.O. previously described.

Ground drive P.T.O. speed is directly related to

rotation of the rear wheels rather than engine speed.

Three speed ranges are provided, selected by

means of the P.T.O. range lever (1). An additional

lever (2) is provided to select ground drive.

To engage ground drive P.T.O:

With the tractor stationary, ensure that the engine

P.T.O. is disengaged by pressing the selector knob

down. With reference to Figure 42, move the lever

(1), to the required P.T.O. speed range and then

select ground drive with selector lever

(2).

Engagement of ground drive will be confirmed by the

appearance of ’GPto’ in the central LCD display.

NOTE: To aid smooth engagement of ground drive

P.T.O., depress and hold both brake pedals whilst

moving the selector lever.

Fully depress the clutch pedal, select a transmission

Light duty axle

P.T.O. shaft revolution

gear and open the throttle to increase engine speed.

per wheel

revolution

Lever position

Allow the clutch pedal to rise. Initial movement of the

clutch pedal will cause the tractor to move and the

540 range engaged

8.83 : 1

P.T.O. shaft (and attached equipment) to rotate.

540E range engaged

11.24 : 1

1000 range engaged

15.19 : 1

The speed of rotation of the P.T.O. shaft is directly

related to rotation of the rear wheels. Shaft

revolutions for each revolution of the rear wheels are

as shown in the table on the right.

Heavy duty axle

P.T.O. shaft revolution

per wheel

revolution

Lever position

NOTE: Selecting ground drive with the engine P.T.O.

540 range engaged

9.93 : 1

function engaged will automatically disable engine

P.T.O. drive. To re--enable engine P.T.O. drive, move

540E range engaged

12.65 : 1

the selector lever to the engine drive position,

1000 range engaged

17.08 : 1

disengage and then re--engage the main P.T.O.

switch.

3--30

SECTION 3 -- FIELD OPERATION

CHANGING THE P.T.O. OUTPUT SHAFT

Using a suitable tool, compress and remove the

circlip

(1) from the P.T.O. housing and carefully

withdraw the P.T.O. stub shaft.

With the shaft removed, check the ’O’ ring seal in the

P.T.O. housing for any damage. Replace ’O’ ring if

worn or damaged.

Thoroughly clean the replacement stub shaft before

inserting it into the housing. Replace the circlip

ensuring it engages fully with the groove in the P.T.O.

housing.

Protect the removed shaft by wrapping in a clean

cloth and place in the tool box.

EXTERNAL P.T.O. CONTROLS

(where fitted)

An optional, fender-mounted P.T.O. switch (1), may

be installed on both rear fenders to aid alignment of

the P.T.O shaft splines with equipment and facilitate

stationary P.T.O. operations.

With the engine running, touch the switch

momentarily to cause the P.T.O. shaft to index round

to align the shaft splines. If the switch is pressed for

less than 5 seconds, the shaft will stop turning when

the switch is released.

Press and hold in the switch for more than 5 seconds

and the P.T.O. will operate continuously. Press the

switch again to stop the P.T.O. Alternatively, the

P.T.O. may be stopped by means of the in-cab

controls, as previously described.

NOTE: The warning light, on the P.T.O. control

panel, will illuminate when the P.T.O. is engaged,

momentarily or permanently.

NOTE: The P.T.O. may be engaged or disengaged

from the fender switch, whether the in-cab control is

in the on or off position.

NOTE: Simultaneous operation, within two seconds,

of in cab and external P.T.O. controls will result in an

error code showing in the central LCD. A 10 second

delay will also occur before P.T.O. control operation

will recommence.

NOTE: The soft start function will operate

irrespective of whether the P.T.O. is engaged from

inside the cab or from a fender switch.

3--31

SECTION 3 -- FIELD OPERATION

CAUTION

Before leaving the tractor to operate the external

Power Take Off switches:

• Move the gearshift levers to neutral.

• Disengage the P.T.O.

• Apply the parking brake.

With the engine running, move the hand throttle lever

to the low idle position (fully rearwards).

The operator must only activate the external Power

Take Off switches (1) while standing to the side of the

tractor (outboard of the rear tyres). To avoid damage

to implement or tractor, operation of the in cab and

external P.T.O. switches should not be carried out

simultaneously.

WARNING

Before using the external Power Take Off switches,

ensure that no person or object is in the area of the

implement, 3-point linkage or P.T.O.shaft.

Never operate the external switches while standing:

• Directly behind the tractor or tyres.

• Between the lower links.

• On or near the implement.

• Never extend arms, legs, any part of the body or

any object into the area near the 3-point linkage,

P.T.O. shaft or implement while operating the

external switch.

• Never have an assistant working the opposite set

of controls.

• When moving to the opposite set of controls,

move around the tractor or implement.

• Do not cross between the implement and tractor.

3--32

SECTION 3 -- FIELD OPERATION

FRONT P.T.O. AND THREE--POINT HITCH

(where fitted)

Tractors with four wheel drive may be equipped with

an engine-driven P.T.O. and front hydraulic lift.

These features are available as a factory installed

option or dealer installed accessory.

FRONT P.T.O.

The front power take--off (P.T.O.) transfers engine

power directly to front-mounted equipment via a 6

spline shaft. The P.T.O. shaft rotates anti-clockwise

(as viewed from the front).

NOTE: A 21 spline shaft is available as a dealer

installed accessory.

A plastic cap (1) is provided over the P.T.O. shaft. Pull

the cap to remove.

NOTE: With the engine stopped, the P.T.O. brake is

released and the shaft may be turned by hand to aid

implement shaft alignment.

The front P.T.O. is electro--hydraulically operated

and is activated by a selector knob on the right-hand

console, similar to the rear P.T.O.

With the engine running at 1000 rev/min. or less,

press the knob (1) and lift the collar (3) and knob up

to engage the P.T.O. The knob will remain up while

the P.T.O. is engaged and the adjacent warning light

(2) will be illuminated. Open the throttle to increase

engine speed to 2120 rev/min and provide a P.T.O.

shaft speed of 1000 rev/min. To disengage the

P.T.O., press the P.T.O. selector knob (1), down.

NOTE: If the engine is stopped, the P.T.O. will not

operate when the engine is restarted until the P.T.O.

knob is reset. Return the selector knob manually to

the ‘off’ position (by pressing the knob down) then

re-engage the P.T.O., as previously described.

DANGER

To avoid inadvertent movement of the implement,

disengage the P.T.O. after each use.

3--33

SECTION 3 -- FIELD OPERATION

FRONT THREE--POINT HITCH

(where fitted)

The optional front hitch consists of an adjustable top

link (1) and a pair of folding lower links (2). The top

link and the lower links have open claw ends that

permit rapid coupling and uncoupling of implements.

The claws are equipped with self-locking latches to

ensure positive retention of the tractor linkage to the

implement.

Three ball-bushings are supplied for installation on the

implement, if required.

Operating the Front Linkage

The front hitch may be controlled through the rear

remote valves, or by a dedicated mid-mounted twin

spool remote valve.

-- with mechanical rear remote valves:

Using valves I or II at the rear of the tractor, operation

of the front hitch may be controlled via the remote

valve levers.

With the front linkage connected to valve number I,

pull the lever rearwards (R) to raise the front linkage.

Move the lever to (N) to halt linkage movement, the

linkage will maintain its height position. Select (L) to

lower the linkage. With the lever in the float position

(F), the linkage can move up and down (float)

allowing the implement to follow the ground

contours.

3--34

SECTION 3 -- FIELD OPERATION

If the implement requires additional hydraulic

services, these may be connected to any unused

remote valve. However, for convenience, it is

recommended the second valve (II) is used for this

purpose.

As an alternative, the levers operating remote valves

I and II may be replaced by a joystick located in a

forward position on the right--hand side of the

operators seat.

IMPORTANT: With the joystick operating the rear

remote valves, a float position (F) is available by

moving the lever fully to the right. This function is not

available when operating with a mid--mounted

2--spool remote valve.

-- with Electro Hydraulic remote valves:

Electro Hydraulic valves may be used to operate the

front hitch using the remote valve lever or electronic

joystick (where fitted). The Electro Hydraulic levers

function in a similar way to the mechanical levers.

The standard default valve to operate the hitch will

always be valve number IIII. However, it is possible

to set the default to alternative remote valve if

required.

The default valve (IIII) is programmed to operate in

conjunction with the front hitch height limiter. If an

alternative valve is used, the height limiter will not

function until the new valve has been programmed.

To reset the default valve, the tractor must be

stationary with the parking brake applied, ensure all

hydraulic lines are disconnected from the remote

valve couplings.

3--35

SECTION 3 -- FIELD OPERATION

• Ensure all EHR timer switches (1), are in the off

position.

• Turn the key--start on, but do not start the engine.

• Depress the timer switch for remote valve No.1

then, within five seconds, depress the timer

switch for valve No. 2.

•

’FEhr’ will appear in the Dot Matrix Display, after

two seconds this will change to show the current

default valve, for example ’Ehr4’.

• Choose the new default valve and depress the

timer switch for that valve three times, the display

will change to show the new selection, for

example ’Ehr1’.

• Turn the key--start off, the new default valve for

front linkage operation is now memorised.

NOTE: For programming procedures on EHR

remote valves, see page 3--66.

With twin spool mid mounted remote valve:

(where fitted)

The optional mid mount remote valve is controlled by

a joystick located on the right--hand side of the seat.

The mid mount valve provides two additional double

acting services, one of which may be utilised to

operate the front hitch.

Pull the joystick rearwards

(R) to raise the

implement. When the hydraulic lift reaches the

height set by the height limit rotary control the

joystick will return automatically to neutral

(N).

Alternatively, the hydraulic lift will stop raising when

the joystick is manually returned to the neutral

position. Moving the joystick fully rearward against

spring pressure will provide a faster rate of lift.

Pushing the joystick forward to the ‘lower’ position (L)

will cause the implement to lower to the ground at a

controlled rate of descent.

Further forward movement of the joystick will select

‘float’ (F) which will allow the cylinder to extend or

retract freely. When in the float position, pushing the

joystick fully forward against spring pressure will

slow the movement of the cylinder.

NOTE: Always use the ’float’ position to lower a

single--acting cylinder. The ’lower’ position is for

double--acting cylinders only.

3--36

SECTION 3 -- FIELD OPERATION

The joystick may also be moved laterally, (R) and (L),

to provide oil flow for equipment connected to the

optional front couplers.

NOTE: With the joystick operating the rear remote

valves, a float (F) position is available by moving the

lever fully to the right. This float facility is not

available when operating with a mid--mounted

2--spool remote valve.

The joystick has the added advantage of being able

to operate two cylinders simultaneously by moving it

diagonally.

IMPORTANT: When operating with a hydraulic

motor always use ‘lower’ and ’float’ positions to

control motor rotation. To stop the motor, move the

lever from the ‘lower’ (drive) position to the ‘float’

position. The motor will then slow to a gradual halt

and not stop abruptly which may cause internal

damage to the motor.

The joystick safety lock lever is used to prevent

accidental operation of the remote valve(s).

The safety lock on the joystick has three positions:

1. Fully out.

All joystick movements available.

2. Mid Position. Lateral movement locked out.

3. Fully in.

All joystick movements locked.

Setting the Height of the Front Hitch

Height limit control is provided by a rotary knob (1) on

the right-hand console. Fully clockwise is maximum

height. Turn anti-clockwise for minimum height.

NOTE: The height limit setting is affected by the oil

flow through the system. For example, if the flow

control setting is set to maximum and engine speed

is high then hitch height may be up to 100 mm (4 in.)

higher than would be achieved if engine speed and

oil flow rate were low.

3--37

SECTION 3 -- FIELD OPERATION

Transport Position

The top link and lower links should be placed in the

transport position when not in use. Raise the top link

(1) to the vertical position and secure by inserting the

lock pin (2) through the top link and anchor bracket.

Secure the pin with the spring clip as shown.

Each lower link pivots about the pivot bolt (2). The

pivot bolt should not be removed unless it is required

to remove the lower links. Extract the lower pin (3)

from the link assembly and raise the lower link (1) to

the vertical position, as shown. Insert the pin through

the upper hole in the inner link arm when the holes

in the inner and outer links (4) are correctly aligned.

Before operating the tractor ensure both pins are

secured with lynch--pins.

To convert to the working position, remove the

lynch--pin, pull out the pin (5) and manually lower the

link arm down to the operating position, as shown.

Install the removed pin in one of the holes (6) or (7),

as required.

When installed in the rear hole (6) as shown, the

lower link will be locked as a rigid unit. If the pin is

installed in the front hole (7), the lower link will be

allowed to move up and down freely (float) through

a range of approx. 75 mm (3 in). Secure the pin with

the lynch--pin.

Repeat on the other lower link, ensuring that both

lower links are set up the same, i.e., both are locked

as rigid units or both are allowed to float.

3--38

SECTION 3 -- FIELD OPERATION

NOTE: With the lower links pinned in the float

position, the left and right-hand sides of the

implement can move up and down independently to

allow for operation on uneven surfaces. In addition,

the remote control valve float function will allow the

whole implement to move up or down as it passes

over uneven ground.

Coupling Implement to Tractor

Start the engine. Move the remote valve lever or

joystick (where fitted) from neutral (N) to lower (L)

until the link arms are just clear of the ground.

Position the tractor so that the open claw ends are

beneath the implement hitch pins.

Slowly move the remote valve lever or joystick

rearward to raise the lower links until the claw

couplers engage the ball-bushings. An audible click

will be heard as the self-locking latches engage the

ball-bushings on the implement. The lift control

should be returned to the neutral position before the

lower links start to lift the implement from the ground.

IMPORTANT: Before operating the tractor, ensure

the release latches (1), are fully retracted into the link

end.

Attach the top link to the implement, adjusting to the

correct length by rotating the threaded centre section

using the handle (3) as leverage. To prevent the

centre section from rotating while in work, place the

locking latch (1) over the pin (2) or adjuster handle

(3). The top link has a similar claw end to the lower

links. Lower the top link claw onto the upper

implement ball-bush and press down until the latch

is heard to engage.

The implement supports, where fitted, may now be

removed or retracted and the implement supported

on the front linkage.

3--39

SECTION 3 -- FIELD OPERATION

The top link is connected to the bracket with the pin

(2) secured by the spring pin. Two holes are provided

in the top link bracket for location of the top link. Use

the top hole (1), as shown, for maximum lift capacity.

Use the lower hole (3), to provide the greatest

implement height, when raised.

Uncoupling Implement from Tractor

Using the remote lever or joystick, lower the

implement to the ground, ensuring that it cannot fall

when disconnected from the front hitch. Use the

implement supports (where fitted).

Pull back the lever on the top link to release the claw

from the implement upper hitch pin.

Pull the ring (1) on both lower links fully rearwards.

The lever will lock in position with the latch retracted.

This will allow the links to clear the ball-bushings on

the implement lower hitch pins when the links are

lowered fully.

Fully lower the lower links using the remote lever or

joystick and reverse the tractor clear of the

implement.

3--40

SECTION 3 -- FIELD OPERATION

MECHANICAL LOWER LINK SENSING

HYDRAULICS (where fitted)

Your tractor is equipped with an hydraulic system

providing accurate and sensitive control over a wide

range of operating conditions. Two systems are

employed, dependent upon the specification level of

your tractor.

The basic hydraulic system, as discussed in this

section of the Manual, is a mechanically controlled

system that offers Position Control and Draft Control

sensed through the lower links of the 3-point linkage.

The system is controlled by the Draft Control lever (3)

the Position Control lever (2) and the fast raise button

(1). The fast raise button will fully raise the 3--point

linkage (and attached implement) independently of

the Position or Draft Control levers.

Position Control provides accurate and sensitive

control of implements, such as sprayers, rakes,

graders, etc., that operate above the ground. Once

set, the position of the lower links will remain at a

constant height unless adjusted using the lift control

lever.

Draft Control is most suitable for mounted

implements operating in the ground. Changes in the

working depth or changes in soil resistance cause

the draft loading on the implement to increase or

decrease.

Pre--operation Checks

CAUTION

Before starting the engine, always ensure that the

fast raise button (1) is pushed in, as shown, to

prevent inadvertent raising of the 3--point linkage.

IMPORTANT: Some mounted or semi--mounted

equipment may interfere with, and damage the cab.

To avoid the possibility of cab damage, check for

adequate clearance by slowly raising the equipment

using the Position Control lever (2). If any part of

the equipment comes closer than 100 mm (4 in.) to

the cab, stop raising. Stop the engine, lower

equipment to the ground and adjust the height limiter

cam.

3--41

SECTION 3 -- FIELD OPERATION

Height Limiter Cam

The height limiter cam is on the right-hand end of the

hydraulic rocker shaft. Turn the cam adjuster (1)

clockwise to decrease implement height, turn

anti--clockwise to increase implement height. The

cam adjuster is self locking and will remain in position

once set.

The cam (2) is shown in contact with the lever (3) at

the maximum height position. To achieve full lift

height, turn the cam adjuster fully anti--clockwise

until the cam is clear of the lever when the lower links

are in the fully raised position.

NOTE: The height limiter cam only affects operation

of the fast raise button. When the cam comes into

contact with the lever, it cancels the signal from the

fast raise button and stops the 3-point linkage from

raising further.

Repeat the previous step to check for implement to

cab clearance. If clearance is inadequate, move the

cam further in a clockwise direction. When clearance

is satisfactory, proceed to operate.

3--42

SECTION 3 -- FIELD OPERATION

POSITION CONTROL OPERATION

IMPORTANT:Always set the system to Position

Control at any time when not actually operating in

Draft Control, such as when attaching or transporting

equipment or when no equipment is attached.

Move the Draft Control lever (3), fully forward in the

quadrant. Set the required implement height/depth

using the Position Control lever (2). Pull the lever

back to raise the implement, push forward to lower.

Implement height/depth is relative to the position of

the lever in the quadrant.

To raise the implement at the end of each pass, or

whenever required, move the latch (1) rearward to

release the fast raise button. The button (2) will pop

out, as shown and the

3--point linkage

(and

implement) will raise to full lift height (as determined

by the height limiter cam setting) without the need to

move the Position Control lever.

To lower the implement, simply press the fast raise

button (2) fully in, as shown, and the implement will

lower to the height/depth set by the Position Control

lever.

CAUTION

When transporting equipment on the

3--point

linkage, raise the implement using the Position

Control lever. The hydraulic system will maintain the

equipment at the height set by the Position Control

lever and prevent the equipment lowering and

becoming damaged, damaging the road surface or

causing personal injury.

3--43

SECTION 3 -- FIELD OPERATION

DRAFT CONTROL OPERATION

When starting work, move the Position Control lever

(2) fully forward and lower the implement into work

using the Draft Control lever (3). Push the lever

forward to increase the draft loading. Pull rearwards

to reduce the draft loading. In most circumstances

forward movement of the lift control lever will

increase implement depth and rearward movement

will reduce the depth.

Once set, the tractor hydraulic system will

automatically adjust the implement depth to maintain

an even pull on the tractor and so reduce wheel slip

to a minimum.

Observe the implement as it pulls through the soil. If

the hydraulic system reaction (vertical movement of

the implement) is too great or too frequent then

system sensitivity may be reduced by adjustment of

the sensor bar spacers.

To move a spacer, remove the nut and bolt (1), end

stop (2), lower link (3) and spacer (4). Re-install the

spacer first, followed by the lower link and end stop.

Secure the end stop with the nut and bolt. Tighten the

nut securely.This is the most sensitive position,

recommended for light implements or light draft

loads.

To reduce system sensitivity, move the spacers at

each end of the sensor bar to the outside of the lower

links as shown in Figure 74. This is the least sensitive

position, recommended for heavier implements or

heavy draft conditions.

As with Position Control operation, use the fast raise

button to raise and lower the 3--point linkage (and

implement) at the end of each pass. Do not move the

Draft Control lever as this will affect the previously

determined setting.

3--44

SECTION 3 -- FIELD OPERATION

Combined Position and Draft Control

Operation

When starting work, lower the implement to the

required depth by means of the Draft Control lever

(3), as previously described. Observe the implement

as it pulls through the soil.

When the implement stabilises at the required depth,

ease the Position Control lever (2) back until the lift

arms tend to rise. The lift linkage is now operating in

Draft Control but the implement is prevented, by the

Position Control function, from sinking too far when

the draft load reduces.

Float Operation

To operate with the lift in float mode move the Draft

and Position Control levers fully forward. This will

enable the lift arms to move up and down freely

allowing the implement to follow the ground

contours.

3--45

SECTION 3 -- FIELD OPERATION

EXTERNAL HYDRAULIC POWER LIFT

CONTROL

To aid the connection of implements, an external

power lift control lever is provided inboard of the rear

right-hand fender.

Before leaving the tractor to operate the external

power lift control:

• Apply the parking brake

• Move the gearshift levers to neutral

• Disengage the P.T.O.

• Move the Draft Control lever fully forward

• Move the hand throttle lever to the low idle

position (fully rearwards)

IMPORTANT: The operator must only activate the

external power lift control lever while standing to the

right of the tractor, outboard of the rear tyre (the

shaded area in Figure 76 ).

WARNING

Before using the external hydraulic power lift control,

ensure that no person or object is in the area of the

implement or 3--point linkage. Never extend arms,

legs, any part of the body or any object into the area

of the 3--point linkage or implement.

Never operate the external power lift control while

standing:

• Directly behind the tractor or tyres

• Between the lower links

• On or near the implement

To operate the external lift control, extract the lever

from its housing and locate in the top of the lift control

mechanism as shown.

Move the lever upwards (anti--clockwise) to raise the

3--point linkage.

Move the lever downwards (clockwise) to lower the

3--point linkage.

3--46

SECTION 3 -- FIELD OPERATION

ELECTRONIC DRAFT CONTROL

(where fitted)

NOTE: Depending on tractor specifiication, some of

the Electronic Draft Control features shown in this

section may not be fitted.

This system described here is known as Electronic

Draft Control. This electronically controlled hydraulic

system senses changes in the draft loading via

sensors in the lower link pins of the 3--point linkage

and changes in the position of the linkage via a

sensor on the cross shaft. The system functions in

Position Control or Draft Control.

Position Control provides accurate control of

implements, such as sprayers, rakes, graders, etc.,

that operate above the ground. Once implement

height has been set, the system will maintain the

selected position irrespective of any external forces

acting upon it.

Draft Control is designed for mounted or

semi-mounted implements operating in the ground.

Changes in soil resistance cause the draft loading on

the implement to increase or decrease.

Draft Control Operational Notes

Draft control sets the working depth in the soil by

maintaining a constant draft load. If the Position

Control lever (1), is set just below the normal Draft

Control working depth, it will prevent the implement

from ‘diving’ or working too deep if an area of soft or

light soil is encountered.

Position Control will override draft control when the

Position Control lever is moved above the working

depth set by the draft loading wheel (2). Therefore,

the Position Control lever can be used to lift the

implement out of the ground, from the normal Draft

Control working depth, without changing the Draft

Control setting.

This function can be useful when a gradual lift out is

required. The thumbwheel stop can be set so that the

Position Control lever can be returned quickly to a

lower limit position just below the normal Draft

Control working depth.

The raise/lower switch would normally be used to

raise or lower an implement during a work cycle.

3--47

SECTION 3 -- FIELD OPERATION

Control Pod

The thumbwheel (1), when rotated, will move the

adjustable stop (2).

The position control lever

(3), is used to set

implement height, when operating in Position

Control. Use it to set the maximum implement depth

when operating in Draft Control.

The draft loading wheel (4), determines the draft load

and therefore implement working depth by setting a

force on the draft sensitivity pins. Selecting position

will provide maximum load and therefore

maximum implement depth.

The raise/lower switch (5) Figure 79, is a three

position, spring centered switch that enables the

operator to rapidly raise the implement to the position

set by the height limit control and to lower the

implement back down to the working depth/height

set by the Position or Draft Controls, without

disturbing the settings. The switch also provides for

faster ground engagement, if required. For detailed

information, see text on page 3--54.

EDC Panel

The draft sensitivity control (1), is used to make the

system more sensitive or less sensitive to changes

in draft loading. Maximum sensitivity is obtained by

rotating the control fully clockwise.

The drop rate control (2), adjusts the speed at which

the three--point linkage drops during the lowering

cycle. Position 1 selects the slowest drop and is

denoted by the tortoise symbol, position 7 provides

the fastest rate of drop.

The height limit control knob (3), limits the height to

which the linkage may be raised. Adjust this knob to

avoid the possibility of a large implement damaging

the tractor when fully raised.

The slip limit control knob (4), available only with the

optional radar sensor unit, enables the operator to

select a wheel slip threshold, above which the

implement will raise until wheel slip returns to the set

level.

3--48

SECTION 3 -- FIELD OPERATION

Indicator Lights

The malfunction warning light

(1), serves two

purposes:

-- Flashing light means that there is a malfunction

in the system circuits. This will be accompanied by

the hitch error symbol appearing in the Dot Matrix

Display.

-- Steady light signifies ‘hitch disabled’. Again, the

‘hitch disabled’ warning is repeated in the Dot Matrix

Display with the hitch symbol.

The indicator lights (2) and (3), operate when the

position control lever is used to raise or lower the

implement or as lift and lower corrections occur

during normal tractor operation. The lower light (3)

will illuminate when the 3--point linkage lowers. The

upper light (2) will illuminate when the linkage raises.

A slip limit ‘on’ indicator (4), illuminates when the

wheel slip limit control is activated.

Hitch Position Display

The digital display in the instrument panel indicates

the position of the lower links over a scale of ‘0’ to

‘100’. A display of ‘0’ indicates that the links are fully

lowered. ‘100’ indicates they are fully raised. Select

the display using the CAL/SEL switch or the

Enhanced keypad (where fitted).

Malfunction Warning Light

In the unlikely event that a fault occurs in the EDC,

the malfunction warning light (1) Figure 81, will start

toflash. Thewarninglight will beaccompanied bythe

appearance of the hitch symbol (1), and error code

(2), in the Dot Matrix Display.

3--49

SECTION 3 -- FIELD OPERATION

The code indicates the tractor circuit or sensor in

which the fault lies and the type of fault, e.g. short

circuit, open circuit, sensor failure, etc. In this event

your tractor will require the attention of your

authorised dealer.

A steady malfunction warning light signifies ‘hitch

disabled’ which is repeated in the Dot Matrix Display

by the apperance of the hitch symbol (1) and error

code ’1024’ (2).

The ‘hitch disabled’ warning light signifies that the

position control setting does not correspond to the

position of the lower links with the result that the

lower links cannot be raised or lowered using the

in-cab controls. The ‘hitch disabled’ warning will

display if:

• The Position Control lever has been moved with

the engine stopped.

• One of the external power lift switches has been

operated to raise or lower the three-point linkage.

See ‘External Hydraulic Power Lift Controls’ on

page 3--57.

To put the Position Control lever back into phase with

the lower links, place the raise/lower switch in the

central position and, with the engine running, move

the Position Control lever

(1) slowly forward or

rearward, as required, until the position of the lever

matches the linkage height. The ‘hitch disabled’

warning light will go out and the hitch error symbol will

disappear from the Dot Matrix Display. The 3--point

linkage will now raise or lower normally.

3--50

SECTION 3 -- FIELD OPERATION

PRE--OPERATION SETTINGS

Attach the implement to the 3--point linkage.

Turn the draft loading wheel (2) fully forward to

position 10 -- this is the Position Control setting.

Start the engine and, using the Position Control lever

(1), raise the implement in stages, ensuring that

there is at least 100 mm (4 in.) clearance between the

implement and any part of the tractor. Note the digital

display reading on the instrument panel. If the

reading is less than ‘99’ it means that the implement

is not fully raised.

Adjust the height limit control knob (2) to prevent the

linkage being raised further and so avoid the

possibility of the implement damaging the tractor

when fully raised.

When the raise/lower switch or the Position Control

lever is used to raise the implement, it will only raise

to the height set by the height limit control, as

determined in the previous step.

Adjust the rate of drop, to suit the size and weight of

the attached implement, by rotating the drop rate

control knob (1). Turn the knob clockwise to speed up

the drop rate or anti-clockwise to slow down the drop

rate.

IMPORTANT: When first setting the implement up

for work, keep the drop rate control knob in the slow

drop position (‘tortoise’ symbol).

When the raise/lower switch is used to lower the

implement, it will lower at a controlled rate as

determined in the previous step.

3--51

SECTION 3 -- FIELD OPERATION

DRAFT CONTROL OPERATION

To operate in Draft Control adjustment of several

controls is necessary to suit the implement and field

conditions.

The draft loading wheel (2), determines implement

depth by setting a required force on the draft sensing

pins Set the wheel to the mid-position (position 5)

prior to commencing work.

The position of the draft sensitivity knob

(1),

determines the sensitivity of the system. Set the

knob to the mid-position before entering the field.

Drive the tractor into the field and lower the

implement into work by moving the Position Control

lever (3), forward. Use the Position Control lever to

set the maximum depth and so prevent ‘diving’ when

areas of light soil are encountered. Set the required

implement working depth by rotating the draft loading

wheel (4).

Rotate the thumbwheel (1) to move the adjustable

stop (2) against the Position Control lever so that the

selected setting may be quickly found.

3--52

SECTION 3 -- FIELD OPERATION

Observe the implement as it pulls through the soil

and adjust the draft sensitivity knob (1), until the

tendency to raise or lower, due to variations in soil

resistance, is satisfactory. Once set, the tractor

hydraulic system will automatically adjust implement

depth to maintain an even pull (draft load) on the

tractor.

The optimum setting will be achieved by observing

the movement indicator lights (2) and (3). The upper

light (2) will illuminate every time the system raises

the implement as normal draft corrections occur. The

lower light (3) will illuminate as the implement lowers.

Turn the draft sensitivity knob (1) slowly clockwise.

The system will respond with smaller, quicker

movements as will be seen by both the indicator

lights flickering. At this point, turn the knob slightly

anti-clockwise until either of the indicator lights

flashes once every 2 or 3 seconds or, as required, to

suit the soil conditions.

Once the required working conditions have been

established there is no need to move the position

control lever again until the work in hand is

completed.

Upon reaching the headland, momentarily depress

the top of the raise/lower switch (3) to quickly lift the

implement to the position set by the height limit

control knob. When re-entering the working area,

momentarily depress the lower part of the switch and

the implement will descend at the rate set by the drop

rate control knob and stop when it reaches the depth

set by the draft loading wheel (2).

During the raise cycle, momentarily depressing the

top of the raise/lower switch will pause implement lift.

Depress the top of the switch again to resume the

cycle.

Depressing the lower part of the switch during the

lowering cycle will also pause implement drop.

3--53

SECTION 3 -- FIELD OPERATION

Faster implement penetration may be required, for

example, after turning at a narrow headland. Also,

some implements are reluctant to penetrate,

particularly if the ground is heavy. Press and hold the

bottom of the raise/lower switch

(4) and the

implement will lower at the rate set by the drop rate

control knob, until it contacts the ground. The drop

rate and the Position Control settings will then be

overridden and the implement will quickly penetrate

the ground, rising to the preset working depth when

the switch is released.

Alternatively, the adjustable stop may be used to set

the implement depth. When the required implement

depth has been established, rotate the thumbwheel

(1). This will move the stop (2) so that it is against the

front edge of the position control lever (3). Whenever

the implement is raised, using the Position Control

lever, it will always return to the same working depth

when the lever is moved forward to contact the stop.

NOTE: If required, the Position Control may be

eased sideways (to the left), in order to bypass the

stop, to lower the implement further.

The slip limit control knob (1), available only with the

optional radar sensor unit, enables the operator to

select a wheel slip threshold, above which the

implement will raise until wheel slip returns to the

preset level. The system overrides the normal Draft

and Position Control sensing signals of the

hydraulics so care must be taken not to select too low

or too high a slip limit. Setting the slip limit to a very

low level, unobtainable in wet conditions, may have

a detrimental effect on the work rate/depth.

The slip limit ‘on’ indicator (2) will illuminate when slip

control is activated and the implement is raising to

restore the selected slip rate. The knob is detented

at the ‘off’ position (knob fully clockwise).

3--54

SECTION 3 -- FIELD OPERATION

POSITION CONTROL OPERATION

To operate in Position Control, the draft loading

wheel (4) should, ideally, be rotated fully forward to

position 10.

Use the Position Control lever (3) to raise and lower

the 3--point linkage. The implement will raise and

stop at the height set by the height limit control knob.

NOTE: The rate of lift will be adjusted automatically.

If a large movement of the position control lever is

made then the lower links will respond by moving

rapidly. As the links approach the position set by the

Position Control lever, implement movement will be

slower.

When the implement is at the required working

height, use thumbwheel (1) to set the adjustable stop

(2) against the Position Control lever (3). Every time

the Position Control lever is moved, it may be quickly

returned to it’s original position, against the stop, to

maintain the required implement height.

If it isrequiredtoraisetheimplementat theheadland,

momentarily depress the top of the raise/lower

switch (5), to lift the implement to the position set by

the height limit control knob. When re-entering the

work area, depress the lower part of the switch and

the implement will return to the height originally set

by the Position Control lever (3).

3--55

SECTION 3 -- FIELD OPERATION

TRANSPORT LOCK

When transporting equipment on the 3-point linkage,

turn the drop rate control knob (2), fully anti-clockwise

to the transport lock position (padlock symbol). This will

prevent the implement from accidentally lowering and

damaging the road surface.

DYNAMIC RIDE CONTROL

When transporting equipment on the 3-point linkage,

implement bounce can lead to lack of steering control

at transport speeds. With Ride Control selected,

when the front wheels hit a bump, causing the front

of the tractor to rise, the hydraulic system will

immediately react to counter the movement and

minimise implement bounce to provide a smoother

ride.

To engage Ride Control, turn the draft sensitivity

knob (1), fully anti-clockwise. Using the raise/lower

switch (4) Figure 99, raise the implement to the

height set by the height limit control (3).

Turn the drop rate control knob

(2) fully

anti-clockwise to the transport lock position (padlock

symbol).

Ride Control will only operate at speeds above 8 kph

(5 MPH). When tractor speed exceeds 8 kph (5 MPH),

the implement will drop by 4 -- 5 points (as displayed

on the instrument panel) as the hydraulic system

makes corrections to counteract implement bounce.

When tractor speed falls below 8 kph (5 MPH) the

implement will raise again to the height set by the

height limit control and Ride Control will become

inoperative.

3--56

SECTION 3 -- FIELD OPERATION

EXTERNAL HYDRAULIC POWER LIFT

CONTROLS (where fitted)

An external, rocker type switch (1) is provided on

each rear fender assembly. The switches are of a

three-position design, spring-loaded to return to the

central, off position.

WARNING

Do not stand on or near the implement or between

the implement and tractor when operating the

external hydraulic power lift controls.

100

Before leaving the tractor to operate the external

switches:

• Move the gearshift levers to neutral.

• Disengage the P.T.O.

• Apply the parking brake.

With the engine running, move the hand throttle lever

to the low idle position (fully rearwards).

WARNING

Before using the external hydraulic power lift

switches, ensure that no person or object is in the

area of the implement or 3-point linkage.

Never operate the external switches while standing:

• Directly behind the tractor or tyres.

• Between the lower links.

• On or near the implement.

WARNING

Never extend arms, legs, any part of the body or any

object into the area near the 3-point linkage or

implement while operating the external switch.

101

3--57

SECTION 3 -- FIELD OPERATION

Never have an assistant working the opposite set of

controls. When moving to the opposite set of

controls, move around the tractor or implement. Do

not cross between the implement and tractor.

The operator must only activate the external

switches while standing to the side of the tractor

(outboard of the rear tyres).

Pressing the upper part of the rocker switch (1) will

cause the lift linkage to raise slowly. Pressing the

lower part will cause the linkage to lower. When the

lower links align with the implement, release the

switch and attach the implement to the 3-point

linkage in the normal way.

To transfer control of the hydraulic power lift back to

the lift control lever, move the lift control lever fully

rearwards and push forward again, more slowly. The

‘hitch enabled’ symbol will display in the instrument

panel, indicating that the 3-point linkage is in phase

with the lift control lever (see page 3--50).

102

IMPORTANT: When control of the 3-point linkage is

transferred back to the lift control lever, an attached

implement may raise fully and damage the rear of the

cab. Operator’s should be aware of this and take

appropriate action to stop raising before full lift height

is reached. Adjust the height limit control knob as

described under Position Control Operation.

3--58

SECTION 3 -- FIELD OPERATION

HYDRAULIC REMOTE CONTROL VALVES

WARNING

Hydraulic fluid escaping under pressure can

penetrate the skin causing serious injury. If any fluid

is injected into the skin, obtain medical attention

immediately or gangrene may result.

• Do not use your hand to check for leaks. Use a

piece of cardboard or paper.

• Stop the engine and relieve pressure before

connecting or disconnecting hydraulic lines.

• Tighten all connections before starting the

engine or pressurising lines.

Hydraulic remote control valves are available to

operate external hydraulic cylinders, motors etc. All

models have two valves as standard, installed at the

rear of the tractor adjacent to the top link.

On tractors with four valves, the first and second

valves may be controlled by levers or by a 4--way

joystick control mounted to the right of the operator’s

seat.

Each control lever is coloured to correspond to the

colour marking on the remote valve.

103

Control Levers

Each valve is controlled by a separate lever providing

four operating positions, raise (R), neutral (N), lower

(L) and float (F). The levers and their respective

valves are colour coded for identification.

Move the lever rearward from the neutral position

and the cylinder will extend to raise the implement.

Push the lever forward, past neutral, to retract or

lower the cylinder. Pushing it fully forward, beyond

the ‘retract’ position, will select

‘float’ which will

permit the cylinder to extend (raise) or retract (lower)

freely, thereby allowing equipment such as scraper

104

blades to ‘float or follow the ground contour.

3--59

SECTION 3 -- FIELD OPERATION

Joystick Control (where fitted)

The joystick (1), actuates valves I and II, operating

in a cross pattern.

Moving the joystick backwards and forwards in a

straight line actuates valve No. I.

Moving the joystick sideways in a straight line

actuates valve No. II.

Moving the joystick diagonally will actuate both

valves simultaneously. By applying directional bias,

one valve can be made to actuate at a faster or

105

slower rate than the other.

Move the joystick rearward from the neutral position

and the cylinder connected to valve No. I will extend

to raise the implement. Push the joystick forward,

past neutral, to retract (lower) the cylinder. Pushing

it fully forward, beyond the ‘retract’ position, will

select ‘float’ which will permit the cylinder connected

to remote control valve No. I to extend or retract

freely, thereby allowing equipment such as scraper

blades to ‘float or follow the ground contour.

Move the joystick to the left from the neutral position

and the cylinder connected to valve No. II will extend

to raise the implement. Move the joystick to the right,

past neutral, to retract the cylinder. Move the it fully

to the right, beyond the ‘retract’ position, will select

‘float’ which will permit the cylinder connected to

remote control valve No. II to extend or retract freely.

The joystick and it’s respective valves are colour

coded for identification.

3--60

SECTION 3 -- FIELD OPERATION

Joystick Lock

The lever lock provides selective control of the

joystick. With the lock pushed fully in, position (1), the

joystick is fixed in neutral and the remote valves

cannot be operated, either by accident or by choice.

If the lock is pulled fully out, position (3), valves I and

II may be operated independently or together by

moving the joystick control in the appropriate

direction.

Intheintermeadiateposition (2), lateral movement of

the joystick that operates valve II is locked.

106

Joystick or Lever Controls

The extend (raise), neutral, retract (lower) and float

positions are identified by symbols on a decal next to

the joystick and/or control levers.

A detent will hold the joystick/lever in the selected

extend or retract position until the remote cylinder

reaches the end of the stroke when the control lever

will automatically return to neutral. Alternatively, the

lever may be returned to neutral manually. The lever

will not return automatically from the float position.

NOTE: Do not hold the joystick/lever in the extend or

107

retract position once the remote cylinder has

reached the end of the stroke as this will cause the

relief valve to ‘blow’. Forcing oil through the relief

valve for extended periods will overheat the oil and

may lead to failure of hydraulic and driveline

components.

3--61

SECTION 3 -- FIELD OPERATION

Configurable Detent Operation

(where fitted)

Your tractor may be fitted with two remote valves

having configurable detents. The rotary control (1),

is used to select one of five detent settings.

To select a setting, rotate the control until the number

(2), on the end cap, aligns with the mark (1), on the

valve body.

NOTE: If the number on the rotary control is not

aligned correcty with the reference mark on the valve

body, the performance of the valve may be affected.

108

Before turning the selector, ensure any residual

pressure in the hydraulic system is exhausted. To do

this, stop the tractor engine, cycle the remote valve

lever through all positions and then place the lever in

neutral.

Each position offers the follwing functions:

Raise (R), Neutral (N), Lower (L) and Float (F)

*To select position 5, place the remote valve lever in

positions available.

neutral, select position I or IV then move the lever to

Detent position in Float only.

the Float position. With the lever in Float select

No lever auto return to neutral (kick out).

position V.

II. Raise, Neutral and Lower positions only.

To de--select position V, put the remote valve lever

No Float facility.

into float, turn the selector control to position I or IV

No detent positions available.

and then move the remote valve lever to neutral. It

No lever auto return to neutral (kick out).

is now possible to select positions I to IV.

III. Raise, Neutral, Lower and Float positions

IMPORTANT: To prevent inadvertent movement of

available.

attached equipment when starting the tractor engine,

Detents in Raise, Lower and Float.

ensure the remote valve levers are in the correct

Lever auto return to neutral (kick out) in Raise

position before operating the key--start switch:

and Lower positions.

With the selector in positions I to IV -- Neutral

With the selector in position V -- Float

IV. Raise, Neutral, Lower and Float positions

available.

Detents in Raise, Lower and Float.

No lever auto return to neutral (kick out).

V. *Raise and Float positions available.

Detents in Raise and Float.

No lever auto return to neutral (kick out).

3--62

SECTION 3 -- FIELD OPERATION

Flow Control

The flow control valve (1), meters the flow of oil to the

remote cylinder and thus controls the rate of

response of the cylinder. Rotate the flow control

anti--clockwise to increase the oil flow to the

implement, rotate clockwise to reduce the oil flow.

For flow rates, see Section 8 -- Specifications.

109

Operating with a Front Loader

If your tractor is fitted with a non New Holland front

loader, the rear remote valves may be used to

provide the hydraulic power.

For loader control it is recommended that remote

valves 1 and 2 are fitted with a joystick and converted

to non detent operation (position 1 with adjustable

detents).

See Accessories, Section 7 for details on Zero

Detent kits for non adjustable remote valves

110

Remote Valve Couplers

Each remote control valve has a pair of¹/₂ in.

quick-disconnect, female couplers. These are of a

self--sealing/locking design but will allow remote

cylinder hoses to pull free if the implement should

become disconnected from the tractor. The raise (lift)

coupler (1), is on the left--hand side, the lower (drop)

coupler (2), on the right--hand side.

The flip--up covers are colour coded black, brown,

blue and green to corresponding to the control levers

in the cab.

111

3--63

SECTION 3 -- FIELD OPERATION

Connecting Remote Cylinders

WARNING

Before connecting or disconnecting hydraulic hoses

at the remote cylinders, stop the engine and relieve

the pressure in the circuit by moving the remote

control valve lever(s) or joystick fully forward to the

‘float’ position then back to neutral. Never work under

or allow anyone near raised equipment as it will drop

when relieving pressure in the system.

WARNING

Before disconnecting cylinders or equipment ensure

the equipment or implement is supported securely.

To connect a remote cylinder, lift the hinged cover(1),

until it locks in the raised position, insert the feed

and/or return hose through the slit in the secondary

dust cover, ensuring it is correctly seated in the

coupler. Ensure that there is sufficient slack in the

hose(s) to allow the tractor/implement to turn in

either direction.

IMPORTANT: Before connecting remote cylinder

hoses, stop the engine and thoroughly clean the

connections to prevent oil contamination.

112

3--64

SECTION 3 -- FIELD OPERATION

To equalise the pressure in the hose and tractor

couplers, start the engine and move the joystick or

valve control lever (1), to the ‘float’ position, then

return it to neutral. To disconnect, grip the hose a

short distance from the coupler, push the hose

forward, into the coupler, then quickly pull on the

hose to ‘pop’ the coupler free. Close the hinged cover

to protect the valve.

WARNING

Never work under equipment supported by a

hydraulic device because it may drop if the control is

actuated (even with the engine stopped) or in the

event of hose failure. Always use a secure support

113

for equipment which must be serviced while in the

raised position.

NOTE: Remote cylinders are operated by oil drawn

from the tractor hydraulic system, therefore, always

check and replenish the hydraulic system oil after

remote cylinder equipment has been connected and

cycled a few times. Operating the tractor with a low

oil level may result in damage to the rear axle and

transmission components.

When topping up the rear axle to accommodate the

requirement of remote cylinders, no more than 20

litres (5.28 U.S. Gallons) should be added to bring

the oil level up to the full mark on the dipstick.

Alternatively, remote cylinders with a total oil

capacity of up to 18 litres (4.75 U.S. Gallons) may be

connected to the tractor hydraulic system without

adding oil, provided that the tractor is being operated

on level ground.

3--65

SECTION 3 -- FIELD OPERATION

Operating Double-Acting Cylinders

Connect the feed hose (1) between the piston end of

a double-acting cylinder and the left--hand coupler on

the remote control valve. Connect the hose (2)

between the right--hand coupler on the same valve

and the rod end of the cylinder. To extend a

double-acting cylinder, move the control lever or

joystick to the ‘extend’ (raise) position.

To retract a double-acting cylinder, move the control

lever or joystick through neutral to the ‘retract’ (lower)

position.

114

Further movement of the lever or joystick, beyond

the ‘retract’ position, will select ‘float’ which will allow

the cylinder to extend or retract freely. This feature

is of material assistance when carrying out work with

equipment such as scraper blades and loaders.

115

Operating Single-Acting Cylinders

Connect the hose (1) from a single-acting cylinder to

the left--hand coupler (2) on the remote control valve.

To extend a single-acting cylinder, move the control

lever or joystick to the ‘extend’ (raise) position.

Manually return the lever or joystick to the neutral

position to stop the cylinder before it is fully extended

or allow the valve to return to the neutral

automatically when the cylinder reaches the end of

it’s stroke.

116

To retract a single-acting cylinder, move the lever or

joystick beyond the ‘retract’ (lower) position to the

‘float’ position.

3--66

SECTION 3 -- FIELD OPERATION

IMPORTANT: Always use the ‘float’ position to

retract a single-acting cylinder. The ‘retract’ position

is for double-acting cylinders only.

NOTE: If a single-acting cylinder is disconnected in

the extended position, while supporting a load, the

hose may be reconnected to the remote control valve

but will not operate until the pressure is released.

Proceed as follows:

• Connect the hose, as described above.

• Start the engine and momentarily pressurise the

cylinder by moving the remote control valve

117

lever/joystick to the extend position and then

immediately to the float position to retract the

cylinder and lower the implement.

Operating Continuous Flow Hydraulic

Equipment

Continuous flow hydraulic equipment (e.g. hydraulic

motors) should be connected to a remote control

valve coupler with the feed hose (2) connected to the

right--hand coupler and the return hose

(1)

connected to the left--hand coupler of the same

valve.

With the remote control valve lever or joystick in the

‘float’ position the motor will be stationary. The

hydraulic motor will operate if the lever or joystick is

moved to the ‘retract’ (lower) position.

118

IMPORTANT: To stop the motor, move the lever or

joystick to the ‘float’ position. The motor will then slow

to a halt and not stop abruptly causing internal line

pressures which could damage the motor seals.

Observe the following to further protect the tractor

and equipment:

• Do not open any by-pass valve in the equipment

or motor. Use the flow control valve to control the

rate of flow or speed of the motor.

• To assure optimum hydraulic oil cooling and

prevent overheating, operate continuous flow

equipment at the highest flow setting (by use of

the flow control valve (1), and lowest engine

speed that will give the required machine

performance and speed.

119

3--67

New Holland T6010, T6020, T6030, T6050, T6070 Delta and Plus Tractors. Operator's Manual - page 5