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New Holland T6010, T6020, T6030, T6050, T6070 Delta and Plus Tractors. Operator's Manual - page 6

SECTION 3 -- FIELD OPERATION

ELECTRO--HYDRAULIC REMOTE

CONTROL VALVES (where fitted)

NOTE: The Electro--hydraulic remote valves are

only available in conjunction with the Enhanced

keypad.

The electro--hydraulic remote valves operate in a

similar manner to the mechanical valves previously

described. However, with these remote valves, a

number of additional automated functions are

available, supported by visual displays in the Dot

Matrix screen.

Remote Valve Isolator Switch

The remote valves cannot be operated unless the

system is energised using the isolator switch (1).

Depress the lower part of the switch to activate the

electrical circuit, depress the upper part to

de--activate. When activated, the amber warning

light (2) will be illuminated. The remote valve(s) are

now operational whenever the tractor engine is

running.

IMPORTANT:The isolator switch may be used to

immediately stop operation of the rear remote valves

by depressing the top of the switch. The isolator

switch will only control the remote valves, it has no

120

effect on three point linkage operation.

Control Levers

Each remote valve lever has four positions, extend,

neutral, retract, and float. In extend and retract

modes, the detented positions are used for timed

remote valve functions.

Pull the lever back from the neutral position, (N), to

the “extend” (Raise) position, (R). From neutral, push

forward to the “retract” (Lower) position, (L). Push

the lever fully forward to the Float position, (F). Float

will permit the cylinder to extend or retract allowing

equipment such as scraper blades to “float” or follow

the ground contour.

121

The “float” position is also used for retracting a

single-acting cylinder and is the OFF position for

hydraulic motors.

3--69

SECTION 3 -- FIELD OPERATION

CAUTION

Electro Hydraulic Remote Control Valves have

detented lever positions. It is not recommended

these control valves be used for front loader

operation. Consult your authorised dealer.

IMPORTANT: In the unlikely event that the remote

valve ceases to operate or responds incorrectly to

lever movements, the system will require the

attention of your authorised dealer.

Each control lever has a ’rolling gate’ which is used

to select or lock--out individual remote valve

functions. Detents on the lever (1) will lock the ’gate’

in one of five positions.

I.

Neutral and Raise locked out: Lower and Float

functional. Move the lever into float before

selecting this position.

II. Raise detent locked out: Neutral, Lower and

Float functions operative.

III. All valve functions are operative.

IV. Float locked out: Raise, Neutral and Lower

122

functional.

V. Lever locked in neutral: No valve functions are

available.

Visual Displays

Depress the remote valve key on the keypad and the

following information will be displayed in the DMD for

each valve:

1. Momentary oil flow from the valve. The shaded

area represents the percentage of oil flow, this

will change as the flow increases or decreases.

2. Maximum flow rate (%) as set by the operator.

The extend/retract directional arrows represent

4

3

the maximum flow setting.

123

3. Number of the remote valve in operation.

4. Direction of cylinder movement, extend (Raise)

or retract (Lower). The direction of cylinder travel

is identified by the arrow.

3--70

SECTION 3 -- FIELD OPERATION

Setting the Maximum Flow Rate

The maximum flow rate for each remote valve can be

set using the menu keys on the Enhanced keypad.

To adjust the remote valve flow rate, the key--start

must be switched ON.

Using the remote valve key

(1), select the

appropriate valve (1, 2, 3, or 4).

124

With the selected valve number displayed in the

DMD, Use the MENU UP/DOWN keys (1 and 2), to

1

increase or decrease the maximum flow rate of the

selected valve. The flow rate will be stored in the

tractor control module until re--programmed, turning

the key--start off will not erase the setting.

NOTE: The remote valve flow rate setting (1),

Figure 126, will apply to both extend and retract

movements of the cylinder.

IMPORTANT: During remote valve set--up, a pause

2

of more than two seconds in key operation will exit

set--up and return to the previous setting, re--enter

125

set--up mode again to continue.

126

3--71

SECTION 3 -- FIELD OPERATION

Additional Displays

As each of the electro--hydraulic remote valve

functions are selected, a corresponding visual

display will appear in the Dot Matrix Screen.

NOTE: The following illustrations relate to remote

valve number 1, see page 3--70 for details on remote

valve numbering.

1. Remote valve in neutral position.

2. Remote valve operating at maximum flow set

by the operator. The illustration shows cylinder

operating in retract mode.

3. Remote valve lever in ’float’ position.

4. Remote valve locked in hydraulic motor mode.

Retract and Float positions only available.

5. Electro--Hydraulic Remote Valve system

switched OFF. All valve functions

de--activated.

3--72

SECTION 3 -- FIELD OPERATION

Manual and Programmable Lever Operation

The Enhanced keypad is used to select and

programme the timed functions for each of the

electro--hydraulic remote valves. As each remote

valve is selected using the remote valve key (1), a

visual display of the valve functions will appear in the

Dot Matrix screen.

Depress the key once to activate the remote valve

display in the DMD. Repeated operation of the key

will cycle through each valve display individually.

127

Manual Operation

When used in manual mode, without the timer

function, the electronic remote valves will operate in

a similar way to the mechanical valves previously

described.

IMPORTANT:Care must be taken when operating in

the manual mode that the remote valve lever is not

left in the detented extend or retract positions when

using remote cylinders. When the cylinder has

reached the end of its stroke the control lever must

be returned to the neutral position manually. Failure

to observe this procedure will overheat the oil and

may lead to failure of hydraulic or driveline

components.

IMPORTANT: Never use the neutral position from

the extend or retract position to stop a hydraulic

motor. Sudden hydraulic lock up of the system may

cause extensive damage to the motor.

In manual mode, oil flow through each valve is

adjusted using the flow rate setting as previously

described.

3--73

SECTION 3 -- FIELD OPERATION

Timed Programme Operation

Timed programme operation is provided primarily for

operation of hydraulic cylinders. This feature allows

the operator to programme a time delay between

when the control levers are activated and when the

oil flow to the implement is stopped.

To operate the electronic remote valves in

programmed mode, depress the appropriate side of

timer control switch (2) as shown. When the switch

is depressed, the green light (1) adjacent to the

remote valve lever will start to flash. The system is

now in standby mode ready to accept a programme

128

sequence. The light will continue to flash for ten

seconds allowing the operator sufficient time to begin

the programming sequence. If a programme is not

started within this period, the system will

automatically de--activate, depress the timer control

switch again to re--start the sequence.

Programming a Double Acting Service

To programme the remote valves, first ensure the

cylinder hydraulic hoses are properly connected to

the appropriate rear remote valve. Start the tractor

engine and set at the normal operating speed in

which the cylinder is to be operated. This is important

as the programming of the control levers is based on

a time interval corresponding to the time it takes the

cylinder rod to extend and retract. Any change in

engine rpm will have an effect on hydraulic flow and

therefore the time taken for the cylinder to extend

and retract.

The timed period for control lever operation remains

the same regardless of oil flow, therefore consistent

operation is required for the system to function

correctly. Using the corresponding timer switch (1)

depress the switch so the light begins to flash. While

the light is flashing move control lever (2) to extend

the cylinder (R). At this point the light ceases to flash

and will remain on.

Hold the lever until the cylinder is extended to the

desired position and then return the lever to the

neutral position. When the lever is returned to the

neutral position the programming light will begin to

flash again indicating the retract phase of the cycle

should now be programmed.

129

3--74

SECTION 3 -- FIELD OPERATION

Operate the control lever (2) to retract the cylinder

(L), and the programming light will cease to flash and

remain on. Hold the lever until the cylinder has

completed the retract cycle and then return to the

neutral position. After the second phase has been

programmed the light will remain on.

After the second phase has been completed and the

lever has been returned to neutral, the programme

will be automatically stored.

Repeat the above sequence to programme the

remaining control levers if required.

130

Programming of the control lever can be performed

in either sequence, extend/retract, retract/extend or

for one movement only, extend or retract. The

maximum allowable time span for any timed

operation is 30 seconds.

Programming a Single Acting Service

To programme a single acting service carry out the

same set--up procedure as previously described for

a double acting service.

With the programme light flashing, move the remote

valve lever from neutral to the extend position (R).

When the cylinder has extended to the desired

position, manually return the lever to the neutral

position. To store the setting, depress the timer

switch. In single acting mode the sequence will NOT

be automatically stored.

131

A single acting service can be programmed to

operate in either extend or retract modes.

NOTE: When using a timed sequence for a single

acting service i.e. programmed in extend mode only,

the retract mode will not function until the programme

sequence has been deleted.

If the control lever is moved to the float position no

timed programme is possible and the control lever

must be returned to neutral manually.

3--75

SECTION 3 -- FIELD OPERATION

Setting Remote Valve Priority

A remote valve with oil flow priority will always take

precedence over other remote valves for hydraulic oil

flow. Irrespective of flow demand by the other valves,

the priority valve will always maintain a constant

output.

For implements requiring multiple remote valve

services, there may be a need for one of the valves

to have oil flow priority, i.e. to provide oil flow for a

hydraulic motor.

With Electro--Hydraulic remote valves, the operator

132

can select one remote valve as the priority valve.

• With the key--start in the ON position, depress

and hold the Menu/Enter key (4) Figure 132, until

the central LCD display reads Ehrx (where ’x’ is

the current priority valve number).

NOTE: If a dash (- ) appears in the display, the

remote valves are not prioritised.

• After a few seconds the LCD display will change

to read PEhr.

• Momentarily depress the EHR remote valve key

(1) Figure 133, to select the valve required for

prioritisation. Depressing the key repeatedly will

133

scroll through the valve numbers.

• When the desired valve number is shown in the

display, depress the Exit/Cancel key

(2)

Figure 132, to exit set--up and return to the

previous display. The valve priority setting is now

memorised.

3--76

SECTION 3 -- FIELD OPERATION

Connecting Single-Acting Cylinders

Connect the hose from a single-acting cylinder to the

extend (left--hand) coupler on the remote control

valve, as previously described.

To extend a single-acting cylinder, pull the control

lever back to the extend position (R).

Manually return the lever to the neutral position to

stop the cylinder when it has reached the desired

position.

(see page 3--75).

To retract a single-acting cylinder, move the lever

fully forward to the float (F) position.

134

NOTE: In single acting timer mode the remote lever

will lock in the extend position and will not

automatically return to the neutral position.

IMPORTANT: Always use the “float” position to

lower a single-acting cylinder. The “retract” position

is for double-acting cylinders only.

Connecting Double-Acting Cylinders

Connect the feed hose from a double-acting cylinder

to the left--hand coupler (1) on the remote control

valve and the return hose to the right--hand coupler

(2), as previously described. To extend a double-act-

ing cylinder, pull the control lever back to the extend

position.

To retract a double-acting cylinder, push the control

lever forward past neutral to the retract position.

Further forward movement of the lever will select

float which will allow the cylinder to extend or retract

freely. This feature is very helpful when carrying out

135

work with equipment such as scraper blades and

loaders.

NOTE: To prevent cylinders creeping under load,

always connect the hose from the load supporting

side of the cylinder to the left--hand coupler.

3--78

SECTION 3 -- FIELD OPERATION

Operating Continuous Flow Hydraulic

Equipment

Continuous flow hydraulic equipment (e.g., hydraulic

motors) should be connected to the lower (1st)

remote control valve couplers with the pressure hose

connected to the right--hand coupler and the return

hose connected to the low pressure return circuit

(see page 3--81, ’Return Oil Line’).

The oil flow should be adjusted to regulate the motor

speed. If the flow is too high, the 3-point hitch and

other remote valves may slow down or stop.

Controlling the flow in this way will ensure that the

hydraulic system will only supply the oil required by

the motor.

With the remote control valve lever fully forward in

the float (F) position, the motor will be stationary. The

hydraulic motor will operate if the lever is pulled back

to the retract position (Lower). To stop the motor,

move the lever from the lower position to the float

position. In the float position the motor will be able to

stop slowly, which will not damage the motor.

IMPORTANT: When operating continuous flow

equipment, the remote control valve lever must not

be moved rearward to the neutral (N) or raise (R)

positions as damage to the equipment may result.

Select position 1 on the rolling gate to lock out the

neutral and extend services (see page 3--70)

136

Observe the following to further protect the tractor

and equipment.

• Do not open any bypass valve in the equipment

or motor. Adjust the oil flow through the valve to

regulate the rate of flow or speed of the motor.

• To ensure optimum hydraulic oil cooling, operate

continuous flow equipment at the highest flow

setting and lowest engine speed that will give the

required machine performance and speed.

3--79

SECTION 3 -- FIELD OPERATION

Operating Several Remote Valves

Simultaneously or Remote Valves and

1

Hydraulic Lift Simultaneously

If operating two or more remote control valves

simultaneously or remote valves and the hydraulic

lift, the flow through the valves should be adjusted

using the enhanced keypad to provide a partial flow,

as previously described. If not so adjusted, all the

available flow may be directed to the full flow circuit

when the pressure in that circuit is less than that of

the other circuits in use.

2

NOTE: The oil flow (1), Figure 138, through remote

137

valve number one (lower valve) will always take

priority over the other valves. For equipment using

more than one remote valve, the hydraulic service

with the highest priority should be connected to valve

number one.

138

Bleeding Remote Cylinders

When connecting a cylinder with trapped air, i.e., a

new cylinder, one that has been out of service or one

that has had the hoses disconnected, it will be

necessary to bleed the cylinder to remove the air.

With the hoses connected to the remote control valve

couplers at the rear of the tractor, position the

cylinder with the hose end uppermost and extend

and retract the cylinder seven or eight times using the

remote control valve operating lever.

Check the rear axle oil level before and after

operating a remote cylinder.

3--80

SECTION 3 -- FIELD OPERATION

ADDITIONAL OIL SUPPLY FOR REMOTE

HYDRAULIC SERVICES

2

(Power Beyond Port, where fitted)

For implements or attachments requiring continuous

or high oil flows from the tractor hydraulic system,

provision is made to connect directly into the main

hydraulic circuit at the rear of the tractor.

To operate correctly the implement must be fitted

with a variable flow hydraulic system that will,

1

through a sensing line, control oil flow from the main

tractor hydraulic pump.

139

IMPORTANT: Before attempting to remove any

blanking plugs or attach pipework, switch OFF the

engine and ensure the areas around the plugs and

pipe connections are thoroughly clean to prevent

contamination of the tractor hydraulic system.

P -- Pressure Line (1)

To connect the implement pressure line, remove the

plug (1) from the external services ’power beyond’

port below the remote valve manifold. Using a

suitable connector, M22 x

1.5/15.5

(ISO 6149),

attach the implement supply line to this port. With the

implement control valve in neutral, a low standby

pressure of 21 to 24 bar (305 to 348 lbf. in.) will be

140

maintained in the pressure line connected to this

port.

LS -- Load Sensing (LS) Line (2)

Connect the sensing line from the M12 x 1.5/11.5

(ISO 6149) port (2), to the implement control valve.

It isthesensinglinewhichgeneratesandcontrolsthe

oil pressure and flow from the tractor hydraulic pump.

When an implement control valve is operated, the

low standby pressure from port ’P’, is diverted down

the sensing line to ’switch on’ the tractor hydraulic

pump. In operation, the load sensing line constantly

monitors pressure and flow to ensure supply never

exceeds demand.

LS Port Location (2)

141

1. Figure 139, with mechanically operated remote

valves and Electronic Draft Control.

2. Figure 140, with electronically operated remote

valves and Electronic Draft Control.

3. Figure 141, with mechanically operated remote

valves and Mechanical Draft Control.

3--81

SECTION 3 -- FIELD OPERATION

LIFT RODS, LOWER LINKS AND TOP LINK

Lower Links and Lift Rod Adjustment

Each lower link (3) has three holes for attachment of

the lift rods. When the tractor leaves the factory, the

lift rods (1) are connected to the rear hole in each

lower link to give maximum lift capacity. If required,

attach the lift rods to the front hole (nearest the

tractor) for maximum lift height. The centre hole

offers a compromise between the optimum lift height

and lift capacity.

142

Both left and right-hand lift rods have a slot at the

lower end which is used to provide a limited amount

of float on the lower link arms. For normal operation

the rectangular plate on the securing pin (1) is

positioned so the lift arm remains fixed in relation to

the lower link arm.

143

If the securing pin (1) is rotated through 90° as

shown, this will allow an implement limited vertical

movement independent of the tractor which is a

useful feature for the operation of wide implements.

After carrying out the adjustment ensure the outer

retaining plate and spring clip are replaced and

securely locked.

Before disconnecting a lift rod from the lower link,

lower attached equipment to the ground, apply the

handbrake and stop the engine. Prior to removing the

securing pin ensure that attached equipment is

correctly supported and that no residual pressure

remains in the hydraulic system.

144

Move the hydraulic lift control lever backwards and

forwards several times, in order to remove residual

pressure, then move the lever fully forward.

With electronic draft control

(EDC) move the

hydraulic lift control lever to the fully lowered position

before switching off the engine.

3--85

SECTION 3 -- FIELD OPERATION

To increase or decrease lift rod length, rotate the

upper part of the lift rod by means of the handles on

the turnbuckle (1).

Before the turnbuckle can be rotated, it is necessary

to lift the turnbuckleto disengagethe slot (2) fromthe

lug (3) on the lower section of the lift rod. Rotate the

turnbuckle to lengthen or shorten the lift rod

assembly.

When adjustment is satisfactory, allow the

turnbuckle to lower into position. Ensure that the

turnbuckle is fully down and that the slot engages

with the lug to prevent unintentional rotation.

145

IMPORTANT: When attaching mounted or

semi-mounted equipment to the 3-point linkage or

when coupling trailed equipment to the drawbar or

automatic pick-up hitch, ensure that there is

adequate clearance between the implement and the

cab or rear window in any open position.

3--86

SECTION 3 -- FIELD OPERATION

Top Link

The top link has a threaded centre section (3) , which,

when rotated, will shorten or lengthen the top link, as

required. Lift up the spring retainer (1) to allow the

centre section (3) to rotate. To ease adjustment, lift

the handle (2) and use it as a lever. Alternatively,

rotating the link end (4) will permit limited adjustment

of top link length.

To lock the sleeve after adjustment, push the spring

retainer down so that it holds the handle flush against

the sleeve.

146

When not in use, the top link can be removed and

stored or left in an upright position. Hook the ball end

of the handle (2), into the bracket (1) on the rear axle

housing, as shown.

147

3--87

SECTION 3 -- FIELD OPERATION

TOP LINK AND RIGHT-HAND LIFT ROD

(hydraulic adjust)

The hydraulic adjust top link

(1) is available in

conjunction with a hydraulic adjust right-hand lift rod

(2). Both the top link and the lift rod incorporate a

double--acting ram cylinder connected into No. IIII

remote control valve.

148

With Electro--Mechanical Operation

To lengthen the right-hand lift rod and move the lower

link downwards, pull No. IIII remote control valve

lever (2) towards you. Push the lever away from you,

past the neutral position to retract the cylinder and

shorten the right-hand lift rod.

To lengthen the top link, depress and hold in the

button (1) on No. IIII remote control valve lever (2)

and pull the lever towards you. Push the lever away

from you, past the neutral position to retract the

cylinder and shorten the top link assembly.

149

With Electronic Operation

Two switches located on the cab ’C’ pillar operate the

hydraulic top link and right--hand lift rod. Both

switches are spring centered and will return to the

neutral position when released.

Depress and hold the top of the left--hand switch (1)

to retract the top link, depress the bottom of the

switch to extend the link.

Depressing the top of the right--hand switch (2) will

retract the hydraulic cylinder and raise the link arm,

depress the bottom of the switch to extend the

150

cylinder and lower the link arm.

Automatic check valves on the top link and lift rod

cylinders will prevent them from ’creeping’.

3--88

SECTION 3 -- FIELD OPERATION

TOP LINK BRACKET

(Lower Link Sensing hydraulics only)

Draft loads are sensed by the lower links, therefore

the top link is attached to a bracket rigidly fixed to the

rear axle housing.

Two holes are provided in the bracket for attachment

of the top link. Insert the pin (1) through the upper

hole, as shown, for maximum lift capacity and the

greatest implement to cab clearance. Use the lower

hole (2) for the best ground penetration and greatest

implement to ground clearance (when the implement

is raised).

151

FLEXIBLE LINK ENDS (where fitted)

Pull the levers (1) up to release the link ends. With the

link ends released, connection to the implement will

be easier. The link end (2) is shown in the extended

position. The link end (3) is shown in the closed

(operating) position.

With both link ends extended, connect the link ends

to the equipment and secure with linchpins. Start the

engine and carefully inch the tractor rearwards until

both flexible link ends lock in the operating (closed)

position (3). Stop the engine and engage the parking

brake.

152

Attach the top link.

IMPORTANT: Before transporting or operating the

equipment, make sure the flexible link ends are

locked in the operating position. Remove the

drawbar if it interferes with close-mounted

equipment.

153

3--89

SECTION 3 -- FIELD OPERATION

QUICK HITCH

(where fitted)

The quick hitch consists of an alternative pair of lower

links (1) and an adjustable top link (2). The lower links

and the top link have open claw ends that permit

rapid coupling and uncoupling of implements without

leaving the cab. The claws are equipped with

self-locking latches to ensure positive retention of

the tractor linkage to the implement. Cables are

provided for attachment to the latches.

An adjustable spacer spring is available as an

accessory. The spring maintains the lower links at

154

the width setting required to match that of the

implement.

Three ball-bushings are supplied for installation on the

implement, if required. The ball-bushing with projecting

lips (1) should be installed on the implement upper

hitch pin. The two plain ball-bushings (3) with their

detachable guides

(2) should be installed on the

implement lower hitch pins.

155

Coupling Implement to Tractor

Adjust the stabilisers to maintain the tractor lower links

at the correct distance apart so they align with the

ball-bushings installed on the implement lower hitch

pins. Alternatively, use the optional, adjustable spacer,

if available. The spacer consists of a closed spring, with

a rod screwed into one end. To adjust, remove the ‘R’

clip and disconnect the spacer rod from the bracket on

the right-hand lower link. Screw the rod into or out of

the spring to shorten or lengthen the assembly.

3--90

SECTION 3 -- FIELD OPERATION

Place the top link in the transport position. With the

lower links fully lowered and the self-locking latches

(1) in the open position as shown, reverse the tractor

until the lower link claw couplers are beneath the

implement hitch pins. The combination of large claw

openings and the guides on the implement

ball-bushes make accurate alignment of tractor to

implement unnecessary.

Raise the lower links using the hydraulic lift lever until

the claw couplers engage the ball-bushes. An

audible click will be heard as the self-locking latches

engage the implement ball-bushes. Lower the top

link claw onto the upper implement ball-bush and

156

press down until the latch is heard to engage.

Increase or decrease top link length, as necessary.

The implement supports, where fitted, may now be

removed or retracted and the implement supported

on the 3-point linkage.

Uncoupling Implement from Tractor

Using the hydraulic lift control lever, fully lower the

implement to the ground ensuring that it cannot fall

when disconnected from the tractor. Use the

implement supports (where fitted).

Pull the release cable on the top link to release the

claw from the implement hitch.

Pull the release cable (2), on both lower links. The

lever will lock in position with the latch (1) retracted.

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

the implement lower hitch pins when the links are

157

lowered fully. Fully lower the lower links and drive the

tractor forward, clear of the implement.

NOTE: Ensure the release cables do not foul wheels,

or moving parts of the hydraulic linkage or

implement. When not in use, secure the cables to the

rubber strap on the rear right-hand side of the cab

frame.

3--91

SECTION 3 -- FIELD OPERATION

LINKAGE STABILISERS

TELESCOPIC STABILISERS

(round section type -- where fitted)

WARNING

Never operate steerable equipment unless the

telescopic stabilisers are correctly adjusted to

prevent excessive lateral movement.

Telescopic stabilisers control the sway of the lower

links and attached equipment when in work or when

being transported.

Each stabiliser consists of a round-section tube (3),

158

anchored by a pin (2) to a bracket (1) bolted to the

outer ends of the rear axle housing. A smaller

diameter inner section (4), attached to a bracket on

the lower links, is a loose, sliding fit within the outer

tube. The overall length of the stabiliser is

determined by the position of a pin (5) that passes

through holes in the tube and inner section.

The holes in the inner section and outer tube are

drilled at different centres so a wide range of

stabiliser settings may be achieved by passing the

pin through the most suitable pair of holes.

To adjust, attach the implement to the 3-point linkage

with the locating pin removed from both stabilisers.

When the implement is satisfactorily aligned, the

locating pins should be passed through any one of

the four holes in the outer tubes that align with one

of the holes in the sliding inner section. With the pins

inserted in this manner, both stabilisers will be locked

as rigid units and the implement will be prevented

from swaying both in work or when raised to the

159

transport position.

If the pin is removed from the front hole

(1)

Figure 159, the front end of the stabiliser (3) will be

allowed to telescope and a limited degree of sway will

be permitted. The unused pin should be re-inserted

in one of the spare holes (2) of the inner section for

safe storage.

IMPORTANT: Always ensure locking pin is replaced

in front stabiliser hole when no implement is

attached.

IMPORTANT: When setting the stabiliser length,

particularly if using the sway facility, ensure that

there is no possibility of the rear tyres fouling the

stabilisers or lower links.

3--92

SECTION 3 -- FIELD OPERATION

TELESCOPIC STABILISERS

(round section screw type -- where fitted)

WARNING

Never operate steerable equipment unless the

telescopic stabilisers are correctly adjusted to

prevent excessive lateral movement.

Telescopic stabilisers control the sway of the lower

links and attached equipment when in work or when

being transported.

Each stabiliser consists of a tube (5), with a coupling

at each end. The front, sliding end (6) is attached to

a bracket (1) bolted to the outer end of the rear axle

housing. This coupling is a loose, sliding fit within the

160

tube. The overall length of the stabiliser is

determined by the position of a pin (3) that passes

through a hole in the tube. The rear end (4) is

attached to the 3--point linkage and is threaded to

provide fine adjustment.

To adjust, attach the implement to the 3-point linkage

with the locating pin removed from both stabilisers.

3

1

To remove the pin, pull back the securing clip. When

the implement is satisfactorily aligned, the locating

pin should then be passed through the holes and the

securing clip replaced. With the pin removed, the

tube may be rotated to provide fine adjustment and

the pin re-inserted.

With the pins inserted in the front holes, both

stabilisers will be locked as a rigid unit and the

implement will be prevented from swaying both in

2

work or or when raised to the transport position.

161

The front of each stabiliser is attached by a pin (2),

passing through holes in the mounting brackets. The

stabilisers are normally attached to the lower hole in

each bracket, to provide parallel lift.

IMPORTANT: The lower hole is the only hole to

which the stabilisers may be connected when locked

as a rigid unit, as described above, otherwise

damage to the lower links may occur when the

linkage is raised.

3--93

SECTION 3 -- FIELD OPERATION

It may be desirable to allow equipment such as

ploughs etc., to sway from side to side.

3

1

If the pin is removed from the front hole, the front end

(1) of the stabiliser will be allowed to telescope and

a limited degree of sway will be permitted. The pin

should be re-inserted through the central hole, as

shown at (3) in Figure 161.

When the front of the stabiliser is attached to the

upper hole (2) in the front mounting bracket the

stabilisers will allow the implement to sway in work

2

with reduced sway when the implement is raised.

This feature provides greater implement control

162

when turning on the headlands of a field.

IMPORTANT: When setting the stabiliser length,

particularly if using the sway facility, ensure that

there is no possibility of the rear tyres fouling the

stabilisers or lower links.

3--94

SECTION 3 -- FIELD OPERATION

AUTOMATIC STABILISERS

Automatic stabilisers may be fitted in place of the

standard

telescopic

stabilisers,

described

previously.

WARNING

Never operate steerable equipment unless the

stabilisers are installed and correctly adjusted to

prevent excessive lateral movement.

Each stabiliser consists of a telescopic tube

assembly internally threaded at the rear end. The

tube assembly is attached to a mounting bracket

bolted to the outer ends of the rear axle housing.

An externally threaded rod (3) is attached to the

lower links. The threaded rod engages with the

screwed thread in the tube assembly and the overall

length of the assembly is determined by screwing the

rod in or out, as required.

An adjustable chain (4) is attached, at one end, to

the rear fender and at the other end, via a spring,

to a hinged cover (1) on the telescopic part of the

stabiliser. A lug (2) on the telescopic part of the

163

stabiliser engages a notch in the cover.

When the chain is correctly adjusted it will be slack

when the lower links are raised from the operating

position, so allowing the cover to drop down over the

lug on the stabiliser. When the cover is down, as

shown, the stabiliser is locked at the preset length.

The lower links are, therefore, retained at a set

distance apart, preventing them

(and attached

equipment) from swaying.

However, when the 3--point hitch is lowered into the

work position, the chain becomes taut and lifts the

cover from the stabiliser allowing it to telescope

freely. The stabilisers (and implement) will then sway

when engaged in the ground. This feature is useful

as it provides greater implement control when turning

on the headlands of a field.

3--95

SECTION 3 -- FIELD OPERATION

Adjusting the Stabilisers

In practice, the implement should be attached to the

three--point linkage with the cover

(4) on both

stabilisers raised, so as to allow the stabilisers to

telescope freely.

Lift the locking/adjusting lever (2) up over the peg (1)

so that the lever is at right-angles to the stabiliser. Turn

the telescopic section, by means of the lever, so that

the threaded section (3) screws into or out of the

stabiliser. When the length is satisfactory, i.e., the notch

in the cover aligns with the lug on the stabiliser, lower

the lever back down over the peg and close the cover.

164

The chain should then be adjusted, by placing the

appropriate link over the attaching hook, so that the

cover on the stabiliser is lifted when the implement

is lowered into work.

IMPORTANT: When setting the stabiliser length to

provide sway, ensure that there is no possibility of the

rear tyres fouling the stabilisers or lower links.

3--96

SECTION 3 -- FIELD OPERATION

SWINGING DRAWBARS

Two types of swinging drawbar are available. The

sliding type is illustrated in Figure 165. This drawbar

may be installed as part of a tow hitch or as an

independent unit.

The roller type, shown in Figure 168, is

recommended when heavy draft, trailed equipment

is used for extended periods. This drawbar is

mounted on rollers and offers additional turning ease

when compared with the sliding type.

Sliding Type Swinging Drawbar

The drawbar (2) pivots about a single pin at the front

end so as to allow the rear of the drawbar to swing

the full width of the hanger. By inserting the swing

limiter pins (1) in the appropriate holes, restricted

movement of the drawbar is permitted. Alternatively,

the drawbar can be pinned in any one of three

positions by insertion of the pins in the appropriate

holes. In Figure 165, the drawbar is shown pinned in

the central position to prevent swinging.

Pin the drawbar to prevent swinging when pulling

equipment which requires accurate positioning and

165

when transporting equipment.

Allow the drawbar to swing when pulling ground

engaging equipment which does not require

accurate positioning. This will make steering and

turning easier.

WARNING

Always secure the drawbar to prevent swinging

when transporting equipment or when operating any

but ground engaging equipment.

The drawbar is adjustable for height and projection

relative to the end of the P.T.O. shaft. To vary the

height of the drawbar/implement hitch point, remove

the drawbar and invert it.

3--98

SECTION 3 -- FIELD OPERATION

All Countries Except North America

The front securing pin may be inserted in one of three

holes in the drawbar to vary the P.T.O. shaft to hitch

point distance. See Figure 166 and the following

table:

Hole (see

P.T.O Shaft to

Maximum Static

Fig. 166)

Drawbar Hitch Point

Downward Load

Drawbar clevis uppermost

1

406 mm (16 in.)

1140 kg (2513 lb.)

2

356 mm (14 in.)

1330 kg (2932 lb.)

3

243 mm (9.6 in.)

2040 kg (4497 lb.)

Drawbar clevis underneath

1

406 mm (16 in.)

1045 kg (2300 lb.)

2

356 mm (14 in.)

1225 kg (2700 lb.)

3

243 mm (9.6 in.)

1305 kg (2875 lb.)

Use of hole 1 is required for 1000 rev/min P.T.O.

166

operations and hole

2

for

540

rev/min P.T.O.

operations.

When towing equipment exerting high static

downward forces, such as two-wheeled trailers, etc.,

use the close-coupled position -- hole 3.

North America only

The front securing pin may be inserted in one of four

holes in the drawbar to vary the P.T.O. shaft to hitch

point distance. See Figure 167 and the following

table:

Hole (see

P.T.O Shaft to

Maximum Static

Fig. 167)

Drawbar Hitch Point

Downward Load

1

406 mm (16 in.)

1140 kg (2513 lb.)

2

356 mm (14 in.)

1330 kg (2932 lb.)

3

304 mm (12 in.)

1535 kg (3384 lb.)

4

228 mm (9 in.)

2040 kg (4497 lb.)

Use of hole 1 is required for 1000 rev/min P.T.O.

operations and hole

2

for

540

rev/min P.T.O.

operations.

When towing equipment exerting high static

downward forces, such as two--wheeled trailers,

167

etc., use the close-coupled positions -- holes 3 or 4.

3--99

SECTION 3 -- FIELD OPERATION

Roller Type Swinging Drawbar

The drawbar (2) Figure 168, pivots about a single pin

at the front end so as to allow the rear of the drawbar

to swing the full width of the hanger. By inserting the

swing limiter pin (1) in the appropriate hole and

through the drawbar, the drawbar can be pinned in

any one of seven positions. Alternatively, the

drawbar may be allowed to swing the full width of the

hanger (3).

Pin the drawbar to prevent swinging when pulling

equipment which requires accurate positioning and

when transporting equipment. Allow the drawbar to

168

swing when pulling ground engaging equipment

which does not require accurate positioning. This will

make steering and turning easier.

WARNING

Always secure the drawbar to prevent swinging

when transporting equipment or when operating any

but ground engaging equipment.

The drawbar is adjustable for height and projection

relative to the end of the P.T.O. shaft. To vary the

height of the drawbar/implement hitch point, remove

the drawbar and invert it.

The front securing pin may be inserted in one of two

holes in the drawbar to vary the P.T.O. shaft to hitch

point distance. See Figure 169 and the following

table:

Hole (see

P.T.O Shaft to

Maximum Static

Fig. 169)

Drawbar Hitch Point

Downward Load

Drawbar clevis uppermost

1

406 mm (16 in.)

1360 kg (2995 lb.)

2

356 mm (14 in.)

1630 kg (3590 lb.)

Drawbar clevis underneath

1

406 mm (16 in.)

1045 kg (2303 lb.)

169

2

356 mm (14 in.)

1225 kg (2700 lb.)

Use of hole 1 is required for 1000 rev/min P.T.O.

operations and hole

2

for

540

rev/min P.T.O.

operations.

When towing equipment exerting high static

downward forces, such as two-wheeled trailers, etc.,

use hole 2.

3--100

SECTION 3 -- FIELD OPERATION

SAFETY CHAIN

When towing implements on public roads, use a

safety chain (2) with a tensile strength equal to or

greater than the gross weight of the implement to be

towed. This will control the implement (1) in case the

drawbar (3) and implement become disconnected.

After attaching the safety chain, make a trial run by

driving the tractor to the right and to the left for a short

distance to check the safety chain adjustment. If

necessary, re-adjust to eliminate a tight or loose

chain.

170

Check the implement operator’s manual for

implement weight and attaching hardware

specifications.

Safety chains, attaching hardware and chain guide

are available from your authorised dealer.

3--101

SECTION 3 -- FIELD OPERATION

REAR TOW HITCH

Description

Various rear tow hitch options are available. All

versions consist of a fabricated steel frame bolted to

the rear axle centre housing. A tow pin is provided,

adjustable for height.

The slider type frame is shown in Figures 172

and 173. Rotating pins in the tow pin assembly

engage in notches in the frame to secure the tow pin

at the required height. With this type of frame, a

second, fixed tow pin (piton) is available as an option.

171

The piton is installed at the bottom of the assembly.

Four types of tow pin assembly are available :--

• Non-swivelling tow pin.

• Heavy duty non-swivelling tow pin.

See Figure 173.

• Swivelling tow pin -- manual operation.

See Figure 177.

• Swivelling tow pin -- auto operation.

See Figure 179.

A swinging drawbar may also be provided as part of

the assembly. See ‘Sliding Type Swinging Drawbar’

on page 3--98 for details of drawbar operation.

NOTE: The tow hitch is designed primarily for use

with four wheel trailers which do not place a heavy

downward load on the tow pin. Observe the

maximum static downward loads quoted in the text.

3--102

SECTION 3 -- FIELD OPERATION

Slider Frame with non-swivelling Tow Pins

(dealer installed accessory)

The tow hitches shown are equipped with a height

adjustable, non-swivelling, tow pin assembly. The

standard tow pin is shown in Figure 172. Figure 173

shows the heavy duty tow pin.

172

Remove the securing clip (1) and lift the handle (5) to

the vertical position. Lifting the handle will rotate the

pins and disengage them from the notches in the

frame. Using both hands on the handle (5) lift or lower

the tow pin assembly (4), as required. When at the

required height, support the tow pin with one hand and

lower the handle to the horizontal position, as shown

in Figures 172

and 173. The pins will rotate and

re-engage the notches in the frame. Lower the P.T.O.

guard (6).

173

To attach a trailer drawbar to the tow pin, remove the

‘R’ clip (3) from the tow pin and lift out using the

handle (2). Re-insert the tow pin so that it passes

through the eye of the trailer drawbar. Replace the ‘R’

clip.

NOTE: The static downward load on the tow pin must

not exceed the rear tyre load capacity or the following

values, whichever is lower. (See Tyre Pressures and

Permissible Loads at the end of Section 3).

Standard tow pin (Fig. 172)

1500 kg (3300 lb.)

Category D2 tow pin (Fig. 173)

2000 kg (4400 lb.)

174

3--103

SECTION 3 -- FIELD OPERATION

NOTE: A Category D3 tow pin (with housing) is

available as a dealer installed accessory. The static

downward load on the Category D3 tow pin should

not exceed 2500 kg (5500 lb.) or the rear tyre load

capacity, whichever is lower. (See Tyre Pressures

and Permissible Loads at the end of Section 3).

175

Slider Frame with Swivelling Tow Pins

The tow hitches shown are equipped with a height

adjustable, swivelling tow pin assembly with manual

or auto operation.

With reference to Figure 176, adjust the height of the

tow pin assembly, as follows:

Grasp the handle (2) with the right hand. Press and

hold in the button (1) to release the locking mechanism.

Pull the handle (3) down to the horizontal position with

the left hand and release the push button to lock the

handle (3) in the horizontal position. Lowering the

176

handle will rotate the pins and disengage them from the

frame. Using both handles, lift or lower the complete

tow pin assembly. When at the required height, hold in

the push button and lift the left-hand handle up to the

vertical position, as shown in Figure 176. The pins will

rotate and re-engage the notches in the frame. Lower

the P.T.O. guard (4).

WARNING

Before attaching a trailer, ensure that the pins are

fully engaged in the notches, i.e. the handle (3)

Figure 176, is in the vertical position. The tow pin

assembly must not rest on the P.T.O. guard or on the

bolt heads at the end of the slider guides.

To attach a trailer drawbar to the upper tow pin, see

the following text:

177

3--104

SECTION 3 -- FIELD OPERATION

Swivelling Tow Pin -- Manual Engagement

To attach a trailer drawbar to the tow pin, remove the

‘R’ clip (1) Figure 177, from the tow pin and lift out

using the handle (2). Re-insert the tow pin so that it

passes through the eye of the trailer drawbar.

Replace the ‘R’ clip.

The tow pin may be allowed to swivel after loosening

the socket-headed screw (1) Figure 178 on the side

of the tow pin assembly. This feature will permit a

trailer with a non-swivelling drawbar to articulate

relative to the towing tractor.

178

NOTE: The static downward load on the tow pin must

not exceed 2000 kg (4400 lb.) or the rear tyre load

capacity, whichever is lower. (See Tyre Pressures

and Permissible Loads at the end of Section 3).

Swivelling Tow Pin -- Auto Engagement

The tow pin (2) Figure 179, is spring-loaded in the

engaged (down) position, as shown. To attach a trailer

to the tow pin, lift the release lever (1) to the vertical

position to retract the tow pin up into it’s housing.

The release lever is connected by the cable (4) to a

handle in the cab. This will permit trailer attachment

without leaving the cab. To actuate the cable release

and retract the tow pin, slide the collar (1) upwards to

release the lock and then pull up the handle.

179

The pin will stay in the raised position until the trailer

drawbar is located beneath it. The eye of the drawbar

will contact the trip lever (3) Figure 179 and cause

1

the pin to drop down into the engaged position.

Alternatively, the tow pin will drop down into the

engaged position if the lever (1) is pulled down.

WARNING

Do not attempt to trip the lever by hand as the fingers

may be trapped by the action of the spring-loaded

tow pin.

180

3--105

SECTION 3 -- FIELD OPERATION

The tow pin may be allowed to swivel after loosening

the socket-headed screw (1) Figure 178 on the

underside of the tow pin assembly. This feature will

permit a trailer with a non-swivelling drawbar to

articulate relative to the towing tractor.

IMPORTANT: Do not allow the tractor tow pin to

swivel if the trailed equipment is equipped with a

swivelling tow pin connector.

NOTE: The static downward load on the tow pin must

not exceed 2000 kg (4400 lb.) or the rear tyre load

capacity, whichever is lower. (See Tyre Pressures

and Permissible Loads at the end of Section 3).

Fixed Tow Pin (Piton)

An optional fixed tow pin (piton) may be provided at

the bottom of the assembly.

To attach a trailer to the piton, remove the linch pin

(2) and withdraw the retaining pin (4). Lift the security

latch (1) and lower the eye of the trailer drawbar over

the piton (3). Drop the security latch down, re-insert

the retaining pin and secure with the linch pin. The

security latch will ensure that the trailer cannot

become accidentally detached from the piton

NOTE: The static downward load on the piton must

181

not exceed 3000 kg (6600 lb.) or the rear tyre load

capacity, whichever is lower. (See Tyre Pressures

and Permissible Loads at the end of Section 3).

182

3--106

SECTION 3 -- FIELD OPERATION

Slider Frame with K 80 Ball

The tow hitch shown is equipped with a height

adjustable, 80 mm ball assembly.

Remove the securing clip (2) and lift the handle (1) to

the vertical position. Lifting the handle will rotate the

pins and disengage them from the notches in the

frame. Using both hands on the handle, lift or lower the

tow ball assembly (3) as required. When at the required

height, support the tow ball with one hand and lower the

handle to the horizontal position. The pins will rotate

and re-engage the notches in the frame. Lower the

P.T.O. guard.

183

NOTE: When setting the height of the tow ball, it

should be adjusted to the lowest position relative to

the correct operating height of the implement

drawbar.

To attach a trailer, remove the ’R’ clip (5) and pull out

the locking pin (4). This will allow the security latch

to pivot forwards toward the tractor. When the

implement drawbar has been securely attached,

replace the locking pin so it passes through the

security latch and re--insert the ’R’ clip.

NOTE: The static downward load on the tow ball

must not exceed 3000 kg (6600 lb.) or the rear tyre

load capacity, whichever is lower.

(See Tyre

Pressures and Permissible Loads at the end of

Section 3).

3--107

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