New Holland TX62, TX63, TX64 Plus, TX65 Plus, TX66, TX67, TX68, TX68 Plus. Operator's Manual

ADJUSTMENTS AND MAINTENANCE

STRAW ELEVATOR

CHAIN TENSION -- Figures 43 and 44

The tension of the straw elevator chain is kept con-

stant by spring A which pushes the mounting sup-

ports of the lower shaft forwards.

Correct chain tension:

Spring length A = indicator plate length B (both

sides).

42950

Adjust with nut C.

As the chain stretches, the supports will gradually

move towards the end of the slots.

Inthiscase, remove half a linkof thethree chainsand

readjust the chain tension.

Proceed as follows:

1. Loosen nuts C on both sides to slacken the straw

elevator chains.

2. Move the straw elevator lower shaft to the rear.

3. Remove cotter pins D and open chains E.

4. Remove half a link F.

5. Reassemble chains E with cotter pins D as

shown.

55012

6. Readjust the chain tension.

Spring length A = indicator plate length B (both

sides).

For correct functioning of the middle shaft, distance

G between the two washers should be 175 ¦1 mm.

42776

5-22

SECTION 5

SLIP CLUTCH -- Figures 46 and 47

The audible slip clutch J is factory-set for average

conditions and must not be further tensioned.

Correct clutch tension ( in case of disassembly):

The length of spring K should measure 75.5 mm (slip

clutch torque is 600 Nm).

55784

55785

ANTIDUST PLATE -- Figure 48

An antidust plate is fixed to the cover F in front of the

drum. The lower part of the plate is adjustable. Adjust

nuts G until there is a clearance of 3 mm between the

plate and the drum rasp bars.

Remove the antidust plate when operating in maize.

21092

5-23

ADJUSTMENTS AND MAINTENANCE

FRONT FACE ADJUSTMENT [if installed] --

Figure 49

The operating angle of the header is adjustable to im-

prove crop feeding. The angle of the straw elevator

front face can equally be adjusted by changing dis-

tance X (factory-set to 72 mm) and distance Y (facto-

ry-set to 49 mm).

To adjust the angle of the front face, proceed as fol-

lows on both sides of the machine:

1. Loosen six nuts B.

43182

2. Adjust distances X and Y between the header and

the straw elevator with nuts H.

3. Adjust the front face angle with nuts A.

4. Tighten nuts A and H.

5. Tighten nuts B to 240 Nm.

ATTENTION:

Make sure the straw elevator slats do not inter-

fere with the dust plates at the front part of the

straw elevator.

ROTO--THRESHERS

SLIP CLUTCH -- Figure 50

The slip clutch on the roto-thresher shaft protects the

returns drive line.

When correctly adjusted, the spring length H should

measure 86 mm.

21074

5-24

SECTION

CONCAVE ADJUSTMENT -- Figure 51

Proceed as follows:

1. Open the covers above inspection holes J.

2. Loosen the four bolts K.

3. Move the roto-thresher concave to a minimum of

5 mm from the roto-thresher teeth (see L).

4. Check the adjustments through inspection holes

J. If grain crackage is experienced, increase dis-

21160

tance L.

5. Retighten the four bolts K.

6. Close the covers over the inspection holes J.

7. Models TX66-67-68-68PLUS only:

Proceed in the same way on the opposite side.

GRAIN ELEVATOR

CHAIN TENSION -- Figure 52

The tension of the grain elevator chain can be ad-

justed at the top of the elevator, accessible through

the grain tank, after drive chain P has been slack-

ened.

Loosen bolts M and adjust with nuts N on both sides

of the elevator head.

ATTENTION:

To prevent bearing damage, ensure nuts N are

tightened evenly.

The tension of the grain elevator chain is correct

21093

when it is just possible to move a link laterally across

the lower sprocket by hand.

5-25

ADJUSTMENTS AND MAINTENANCE

SLIP CLUTCH -- Figure 53

To protect the clean grain drive line an audible slip

clutch is fitted to the gearbox. The slip clutch is fac-

tory-set for average crop conditions.

To adjust, compress spring Q completely and then re-

lease the nut 5

1/4 turns.

21094

BRAKES

PARKING BRAKE ADJUSTMENT

All models, except TX67 -- Figure 54

1. Disengage the handbrake in the cab. Do not re-

move spring A.

2. Loosen nuts C and bolts B.

3. Adjust dimension 219 mm with nuts D.

4. Turn bolts B by hand until they touch the brake

52041

blocks.

5. Loosen bolts B 1/6 of a turn and tighten screws C.

Model TX67 -- Figures 55 to 57

Every 500 operating hours or once a year a clearance

check and possible adjustment of the parking brake

has to be carried out.

Proceed as follows:

1. Park the combine on level ground and block the

wheels adequately (e.g. by means of wooden

blocks).

2. Measure the piston travel of the parking brake in

the following manner:

a) Remove rubber cap G.

b) Measure distance X.

5-26

SECTION 5

c) Remove cotter pin H, screw nut J against the

end cap K and tighten to complete release of

the parking brake disc. Measure distance X

again. The difference between the two values

is the piston travel. Piston travel should be be-

tween 1.5 and 3.5 mm.

If the piston travel exceeds 3.5 mm, one or more

shim layers S have to be removed. Removing one

layer of shims will reduce the piston travel by 2

mm. Each layer of shims consists of 3 sectional

parts (3x120°).

30840

To remove the shims, proceed as follows:

a) Loosen the three screws L. Turn out one screw

and remove the corresponding shim sec-

tion(s)

(one layer per 2 mm travel reduction).

Reinstall the screw. Proceed in the same way

for the two other sections.

ATTENTION:

Install the removed shim between the end cap

and the bolt head. This will prevent the shims

from getting lost. The removed shims will be

needed again when installing new brake pads

later on.

b) Retighten the three screws L to 97 Nm torque.

Measure the piston travel again. If not correct, re-

turn to step 3. If correct, unscrew nut J to the end

55786

of the central rod. Secure nut J with the cotter pin

H. Install rubber cap G.

REMARK:

This procedure does not cover the checking of

the friction lining wear. The brake pads have to

be replaced if the remaining thickness is less

than 1 mm. It is the operator’s responsibility to

check this on a regular basis. To bleed or to

replace the brake linings, contact your local

dealer.

30839

5-27

ADJUSTMENTS AND MAINTENANCE

FOOT BRAKES

To bleed or to replace the brake linings, contact your

local dealer.

Have the linings checked:

S when the brake warning light comes on

S every 400 hours in normal conditions

S every 200 hours in heavy brake conditions

(e.g. ‘‘spin turns’’ in maize, steep hills)

Clean the brakes every 200 hours with compressed

air.

FLUID CHANGE

The brake fluid has to be changed every two years.

Contact your dealer to carry out this job.

CAUTION:

S In case of leakage or malfunction of

the brake system, immediately con-

tact your New Holland dealer.

S The seals of the brake slave cylinders

contain fluoroelastomers which,

when used under normal conditions,

are perfectly safe.

If, however, they are exposed to tem-

peratures in excess of 315° C, the ma-

terial will not burn, but decompose.

An extremely corrosive acid is then

formed which is almost impossible to

remove once it has contaminated the

skin.

5-28

SECTION 5

STEERING AXLE

TOE-IN ADJUSTMENT -- Figure 58 (aerial view)

The steering wheels should have the correct amount

of toe-in, otherwise premature tyre wear may occur.

The distance between the steering wheels must be

smaller at the front than at the rear (facing the direc-

tion of travel).

To check and adjust the toe-in, proceed as follows:

1. Apply the parking brake and support the steering

axle so that the steering wheels are clear of the

50402

ground.

CAUTION:

Use suitable jack stands, securely posi-

tioned underneath the rear of the ma-

chine, before adjusting the steering axle.

Steering ball joints, wheel spindles, tie

rods and steering hydraulic components

should be checked every 50 hours of op-

eration.

2. Set the steering wheels in the straight ahead posi-

tion.

3. Mark spots at 273 mm from the centre on the front

inside of the wheel rims at the centre-of-wheel

height and measure distance B.

4. Turn the steering wheels 180_ forward or rear-

ward until the marks are at the centre-of-wheel

height and measure distance C.

Distance C must be 8 to 12 mm greater than dis-

tance B.

5. To adjust the toe-in, loosen jam nuts E, remove

steering ball F out of the steering arm and turn

the steering ball in or out rod D evenly on both

sides. After adjustment, tighten the slotted nut of

steering balls F and the jam nuts E (see further in

this Section).

5-29

ADJUSTMENTS AND MAINTENANCE

STEERING AXLE POSITION -- Figures 59 and 60

When operating on standard steering wheels, the

steering axle should be installed in the upper hole R in

the frame and, in the case of an adjustable steering

axle, in the front position (long bushing T is fitted at

the rear of the steering axle).

When operating on tracks and rice steering wheels or

for the TX67 combine, the steering axle should be

fitted in the lower hole S in the frame and, in the case

of an adjustable steering axle, in the rear position

(long bushing T is fitted at the front of the steering

21122

axle).

We recommend this job to be carried out by your New

Holland dealer.

21125

5-30

SECTION 5

FIXED STEERING AXLE

Adjustment

Adjust the toe-in as described in the previous para-

graph

Steering wheel stops -- Figure 61

The steering wheel stops are factory-set and should

normally not require further adjustment.

42900

If, for any reason, the stops require adjustment, pro-

ceed as follows:

1. Turn bolt E completely in.

2. Rotate the steering wheel to the extreme left or

right-hand position so that the steering cylinder is

at the end of its stroke.

3. Retract the steering cylinder 2 mm.

4. Turn bolt E against the support and tighten the

lock nut.

5. Proceed in the same way on the opposite side.

Steering ball joints -- Figures 62 and 63

43183

Check the steering ball joints of the steering axle

TX62-63-64PLUS-65PLUS

every 50 hours of operation for correct nut torque or

possible play.

If, for any reason, the steering ball joints were disas-

sembled, the nut torque should be as mentioned in

Figure 62 for models TX62-63-64PLUS-65PLUS, or in

Figure 63 for models TX67-68-68PLUS.

115 Nm

135 Nm

115 Nm

135 Nm

115 Nm

135 Nm

52534

TX67-68-68PLUS

5-31

ADJUSTMENTS AND MAINTENANCE

ADJUSTABLE STEERING AXLE [if fitted] --

Figures 64 and 65

The adjustable steering axle has three positions:

S Narrow position

NOTE:

This position is mandatory in Germany for

road transport

S Mid position

51678

S Wide position

Adjustment

CAUTION:

Use suitable jack stands, securely posi-

tioned underneath the rear of the ma-

chine, before adjusting the steering axle.

Proceed as follows:

1. Apply the parking brake and support the steering

axle on the left-hand side.

2. Loosen bolt G and hammer it towards the centre

of the axle, so that key F is loose.

3. Remove the bolts from tie rod D and bolts H from

51679

the steering axle.

4. Adjust the steering axle on the left-hand side to

the required width.

5. Reinstall bolts H.

6. Hammer bolt G to the outside, so that key F is

fixed, and tighten bolt G to 137 Nm.

7. Tighten bolts H to 294 Nm.

8. Support the steering axle on the right-hand side

and adjust, as outlined above.

5-32

SECTION 5

9. Reinstall the steering cylinder support J in the

correct position.

10. Reinstall the bolts in the tie rod.

Adjust the toe-in as described in the previous para-

graph.

Steering wheel stops -- Figure 66

The steering wheel stops are factory-set and should

normally not require further adjustment.

If, for any reason, the stops require adjustment, pro-

ceed as follows:

1. Turn bolt E completely in.

2. Rotate the steering wheel to the extreme left or

right-hand position so that the steering cylinder is

at the end of its stroke.

21117

3. Retract the steering cylinder 2 mm.

4. Turn bolt E against the support and tighten the

lock nut.

5. Proceed in the same way on the opposite side.

Steering ball joints -- Figure 67

Check the steering ball joints of the steering axle

every 50 hours of operation for correct nut torque or

possible play.

If, for any reason, the steering ball joints were disas-

sembled, the nut torque should be as mentioned in

Figure 67.

43184

5-33

ADJUSTMENTS AND MAINTENANCE

HEAVY-DUTY ADJUSTABLE STEERING AXLE

[if fitted] -- Figure 68 to 70

The heavy-duty adjustable steering axle has 7 posi-

tions.

Adjustment

54780

CAUTION:

Use suitable jack stands, securely posi-

tioned underneath the rear of the ma-

chine, before adjusting the steering axle.

Proceed as follows:

1. Apply the parking brake and support the steering

axle on the left-hand side.

2. Loosen bolt G and hammer it towards the centre

of the axle, so that key F is loose.

3. Remove bolts D from the tie rod, and bolts S and

X from the steering axle.

54781

4. Adjust the steering axle on the left-hand side to

the required width.

5. Reinstall bolts X. Refer to Figures 69 and 70.

6. Reinstall the steering cylinder support in the cor-

rect position with bolts S.

Hole

Posit.

7. Hammer bolt G to the outside, so that the key F is

fixed, and tighten bolt G to 140 Nm.

8. Tighten bolts S and X to 485 Nm.

9. Support the steering axle on the right-hand side

and adjust, as outlined above.

10. Reinstall bolts D in the tie rod.

Adjust the toe-in as described previously.

5-34

SECTION 5

Steering wheel stops -- Figure 71

The steering wheel stops, i.e. the minimum stroke

length of the cylinders, are factory-set and need no

further adjustment.

If, for any reason, the stops require adjustment, pro-

ceed as follows:

1. Rotate the steering wheel to the extreme right-

hand position so that the steering cylinder is at its

minimum stroke. Be sure the opposite cylinder is

55435

not blocking first.

2. Adjust 53° with nuts E.

3. Proceed in the same way on the opposite side.

Steering ball joints -- Figure 72

Check the steering ball joints of the steering axle

every 50 hours of operation for correct nut torque or

possible play.

If, for any reason, the steering ball joints were disas-

sembled, the nut torque should be as mentioned in

Figure 72.

52636

5-35

ADJUSTMENTS AND MAINTENANCE

Rear-wheel position -- Figure 73

The complete steering wheel can be repositioned on

the steering axle in order to lift the machine rear end

to a level combine position.

Figure 73 shows the five different positions. Install

steering cilinder support N in the correct position.

CAUTION:

Wheel drive assemblies are heavy. Use a

lifting device of adequate capacity. Re-

position one side at a time.

The bolts should be tightened to 485 Nm.

Adjust the toe-in as described previously.

43172

5-36

SECTION 5

REAR-WHEEL DRIVEN STEERING AXLE

[if fitted]

This steering axle has four positions -- Figure 77

Adjustment -- Figures 74 to 77

21149

CAUTION:

Use suitable jack stands, securely posi-

tioned underneath the rear of the ma-

chine, before adjusting the steering axle.

Proceed as follows:

Apply the parking brake and support the steering

axle on the left-hand side.

Remove the five left-hand bolts K and the four

bolts L from the track rod.

Adjust the steering axle on the left-hand side to

the required width.

21148

Place the hydraulic hoses support M in the re-

quired position, as shown.

Reinstall bolts K and tighten them to 360 Nm.

Support the steering axle on the right-hand side

and adjust, as outlined above.

Install the steering cylinder support N in the cor-

rect position.

Reinstall the bolts in track rod L.

Adjust the toe-in, as described previously.

NOTE:

Check if the routing of the hydraulic hoses is

satisfactory and reposition valve P on its sup-

21147

port Q, as necessary.

5-39

ADJUSTMENTS AND MAINTENANCE

51594

Rear-wheel position -- Figure 78

When operating on tracks, the complete steering

wheel and hydrostatic motor can be repositioned

on the steering axle in order to lift the machine

rear end to a level combine position.

Figure 78 shows the standard clearance position

U and the high clearance position V, when tracks

are used.

CAUTION:

Wheel drive assemblies are extremely

heavy. Use a lifting device of adequate

capacity. Reposition one side at a time.

51595

The bolts W should be tightened to 440 Nm.

5-40

SECTION 5

ENGINE

IMPORTANT:

Clean the engine area, the radiator compart-

ment and, in particular, the exhaust system

daily to prevent fire hazards. When operating

in extremely dry crops and in heavy dust

conditions, check these areas more often and

clean, if necessary.

FUEL SYSTEM

Fuel level

The fuel level can be checked on the gauge in the in-

strument panel.

Filling the fuel tank

Before filling the fuel tank, clean away any dust and

chaff from the filler neck and fill through a funnel with

a fine gauze filter.

The best time to fill the tank is in the evening as this

prevents overnight condensation from forming in the

tank.

IMPORTANT:

The quality of fuel used is an important factor

in obtaining dependable performance and sat-

isfactory engine life. Many engine difficulties

can be traced to dirty fuel, therefore the impor-

tance of using clean fuel, properly stored, can-

not be stressed too strongly.

Fuel with a sulphur content below 0.5 % is rec-

ommended.

5-41

ADJUSTMENTS AND MAINTENANCE

CAUTION:

S Handle fuel with care.

S Never fill the tank when the engine is

running.

S Smoking is strictly prohibited during

filling.

S Always clean up spilled fuel.

IMPORTANT:

The fuel tank is vented through the filler cap. If

a new filler cap is required, always replace it

with an original vented cap.

Fuel tank capacity

Models TX62-63-64PLUS

: 450 litres

Models TX65PLUS-66-67-68-68PLUS

: 600 litres

Fuel prefilter/ water separator -- Figure 79

Drain the water from the filter housing daily by loos-

ening screw D until fuel free of water runs out of the

screw orifice. Collect the water/fuel mixture and dis-

pose of according to regulations. Retighten screw D.

Change the fuel prefilter/water separator C every 400

hours of operation, or earlier, if a drop in engine per-

formance is experienced.

To change the fuel prefilter/water separator, proceed

as follows:

55034

1. Shut off cock B.

2. Unscrew the ‘‘spin-on’’ prefilter/water separator.

3. Apply a film of oil to the gasket of the new prefilter/

water separator.

4. Screw on the new prefilter/water separator by

hand until it contacts the filter head. Tighten fur-

ther maximum half a turn.

DO NOT USE TOOLS!

5-42

SECTION 5

Fuel filters

Models TX62-63-64PLUS-65PLUS-66-67 -- Figure 80

Models TX68-68PLUS -- Figure 81

The fuel filter A is a paper element ‘‘spin-on’’ filter

which must be replaced every 200 operating hours.

To change the fuel filter, proceed as follows:

1. Unscrew the fuel filter using a filter wrench.

2. Fill the new filter with clean fuel and coat the seal

30227

with fuel. Ensure the seal is properly seated.

TX62-63-64PLUS-65PLUS-66-67

3. Screw the filter on by hand and tighten it securely

(firmly against the head and then an additional 1/4

to 1/2 turn).

4. Bleed the fuel system (refer to the next para-

graph).

5. Models TX62-63-64PLUS-65PLUS-66-67:

The fuel filter contains a sediment bowl at its bot-

tom side which collects large particles of dirt and

water. This sediment bowl can be removed and

cleaned.

Bleeding the fuel system

Models TX62-63-64PLUS-65PLUS-66-67 -- Figure 80

Models TX68-68PLUS -- Figure 81

Proceed as follows:

1. Ensure there is fuel in the tank.

2. Loosen bleed screw B on the top of the fuel filter

housing.

3. Models TX68-68PLUS only:

30230

Loosen knurled knob C of the fuel lift pump.

TX68-68PLUS

4. Operate the fuel lift pump piston by hand until the

fuel escaping is free from air bubbles.

5. Retighten bleed screw B.

5-43

ADJUSTMENTS AND MAINTENANCE

6. Continue pumping until the force needed remains

more or less constant. This allows the fuel to be

drawn into the injection pump.

7. Models TX68-68PLUS only:

Press the fuel lift pump piston down and firmly

tighten knurled knob C.

NOTE:

If the engine does not start after performing

the above procedure, it will be necessary to

bleed the fuel injector lines while starting the

engine.

This will allow any air to escape that may be in

the high pressure part of the fuel system.

Take all necessary safety precautions when

working on the engine. Do not bleed the lines

when the engine is warm.

Fuel injection pump and injectors

As the fuel injectors and fuel injection pump have to

be set very accurately on specialized equipment, we

strongly recommend that any repairs on these parts

are carried out by your New Holland dealer.

COOLING SYSTEM

Coolant level -- Figure 82

Daily check the radiator coolant level on the level indi-

cator A when the engine is cold.

ATTENTION:

Under no circumstances should the engine be

started without water in the cooling system.

If the temperature rises too high during operation, or

if the audible alarm sounds, stop the engine immedi-

51514

ately and locate the cause (coolant level, oil level, fan

and rotary dust screen belt tension, dirty radiator or

rotary dust screen, etc.). Refer to Section 6 - TROU-

BLESHOOTING.

5-44

SECTION 5

WARNING:

S Take care if removing the radiator cap

when the engine is hot. Cover the cap

with a rag and turn slowly to release

the pressure before removing the cap

completely.

S Do not add cold water to a hot radia-

tor.

Coolant change -- Figure 83

The coolant water/antifreeze mixture should be re-

newed:

S every 600 operating hours, or

S every 2 years, whichever comes first.

When replacing the coolant, proceed as follows:

42896

1. Drain the cooling system by opening cock H.

2. Flush the cooling system by closing cock H and

filling the system with clean water. Start the en-

gine and bring it up to normal operating tempera-

ture. Stop the engine. Then open cock H.

3. Close cock H and fill the cooling system with cool-

ant as specified.

CAUTION:

The engine and radiator are hot, so ex-

treme care should be taken when filling

the radiator and reinstalling the cap.

5-45

ADJUSTMENTS AND MAINTENANCE

To remove air from the system, proceed as follows:

1. Fill the radiator to the bottom of the filler neck.

Leave the radiator cap off.

2. Start the engine and vary the rpm between low

idle and 1500 rpm for 3 minutes.

3. Increase the rpm to maximum until the thermostat

opens (upper radiator hose becomes hot), and

then for a further 10 minutes to allow the air to es-

cape.

4. Return to idle and stop the engine after 1 minute

(turbocharger precaution!).

5. Fill the radiator to the level indicator A (Fig. 82)

and reinstall the radiator cap.

Coolant system capacity

35 litres

Coolant specification

47.5 % water

47.5 % antifreeze

5% conditioner

The quality of water should not exceed the following

limits:

S Total hardness: 0.3 %

S Chlorides : 0.1 %

S Sulphates : 0.1 %

Antifreeze: AGRIFLU (ref. NH900A)

Conditioner: NALCOOL3000 ESE-M99B169-A

5-46

SECTION 5

Water conditioner element B

[Model TX68-68PLUS only] -- Figure 84

Replace the element every 400 operating hours or

once a year, whichever comes first.

42932

CRANKCASE BREATHING SYSTEM -- Figure 85

The crankcase is vented through the valve cover and

housing A to the inlet tube.

The crankcase breathing system does not need to be

serviced.

30837

CYLINDER HEAD BOLTS

The cylinder head bolts do not require retightening

during normal service intervals.

5-47

ADJUSTMENTS AND MAINTENANCE

ROTARY DUST SCREEN AND COOLING SYSTEM -- Figures 86 and 87

All TX Series models (except for TX68) have a

hinged rotary dust screen door.

To gain access to clean the cooling system, proceed

as follows:

1. Open safety guard A and lock B.

2. Pull out handle C and open the rotary dust screen

door by pulling handle C until safety latch D is in

position.

30836

3. Remove lynch pin E.

4. Pull out the oil coolers and condenser door F.

5. Keep the radiator door open with lock G.

Clean the cooling system regularly, depending on

combining conditions.

30381

5-48

SECTION 5

AIR INTAKE SYSTEM -- Figures 88 and 89

The filter element Q should only be cleaned when

the warning light in the combine cab illuminates and

the audible alarm sounds (500 mm vacuum).

To remove the air cleaner element Q, remove cover C

by loosening three clamps S and remove the air

cleaner element.

To clean the element, hold the top and tap it against

the palm of the other hand to remove the dust.

NEVER TAP IT ON A HARD SURFACE.

55498

When tapping does not remove the dirt, direct com-

pressed air through the element, from the inside to-

wards the outside.

To prevent damage to the element when cleaning

with compressed air, take the following precautions:

S Maximum air pressure must be 5 bar.

S Move the nozzle up and down while rotating the

element.

55499

S Keep the nozzle at least 25 mm from the pleated

paper.

WARNING:

Wear a dust mask when cleaning the air

filter element.

5-49

ADJUSTMENTS AND MAINTENANCE

If the element is soiled with oil or soot, it is possible to

soak it for 15 minutes in a solution of 75 grammes of

non-sudsy detergent and 10 litres of lukewarm water.

Rinse the element thoroughly in clean water until the

water remains clear and leave the element to dry.

NEVER WASH THE AIR CLEANER ELEMENT IN

PETROL OR DIESEL OIL.

Every time the element is cleaned, it should be exam-

ined for holes and cracks by holding an electric light

bulb inside the element and looking through it. If any

damage is noted, discard the element and fit a new

one.

Replace the element after five cleanings or once a

year, whichever comes first.

When fitting, make sure the element is seated prop-

erly and the sealing is in good condition.

A safety element T is fitted as an additional security to

prevent dust from entering the engine when replacing

the standard element. The safety element should

normally not be cleaned.

Replace the safety element every two years.

5-50

SECTION 5

CAB AIR FILTER -- Figures 90 and 91

The cab air filter is located near the cab door on the

left-hand side.

Clean the cab air filter regularly and, in extremely

dusty conditions, daily.

Wear a suitable dust mask!

Proceed as follows:

30830

1. Open cover A.

2. Open filter housing B.

3. Remove cover C.

4. Remove the filter element D.

5. Clean with compressed air blown from the inside

towards the outside.

It isadvisibletoreplacethefilterelements everyyear.

CAUTION:

30829

Dust protection

The air filter in the cab does not protect

against all substances

(e.g. chemical

residues on crops). Absolute protection

against specific products can only be ob-

tained when the nature of these products

is known and adequate measures are

purposely designed to counter the haz-

ard created by these substances. Even

the use of carbon filters cannot ensure

complete protection.

It goes without saying that correct filter

maintenance and keeping doors and

windows closed is essential.

5-51

SECTION 5

FILTER-DRIER -- Figure 95

A sight glass and a ring-shaped moisture indicator F

on the right-hand side of the engine cover serve for

determining the condition of the R134a gas.

S If therefrigerant iswithout airbubbles, thenthere-

frigerant condition is good.

S If the glass shows a milky refrigerant: satisfactory

performance is ensured.

42899

S If air bubbles are visible: lack of refrigerant.

S If the moisture indicator is blue: filter and refriger-

ant are in good condition.

S If the moisture indicator is red: this is an indication

of too much moisture, the filter-drier has to be re-

placed.

If the filter-drier needs to be replaced or if the air con-

ditioning system needs repair, contact your local

dealer.

AIR COMPRESSOR [If installed]

Models TX66-67-68-68PLUS -- Figures 96 to 98

The combine is equipped with an air blowing system

to keep the engine compartment clean.

The air compressor A is installed near the engine and

needs no further maintenance.

43173

5-53

ADJUSTMENTS AND MAINTENANCE

Every 50 operating hours, drain the condensed water

from the air receiver B through cock C, and from the

water separator D.

A union E is installed to attach pneumatic service

tools and for cleaning purposes.

The inner thread of the union is 1/2 GAZ CYL.

43174

43175

Air reservoir specification

(according to European Directive 87/404/EEC)

S Trade mark: Wabco

S Type “60l”

S Maximum operating pressure: 10 bar

S Maximum operating temperature: +100°C

S Minimum operating temperature: --50°C

S Capacity:

60 litres

5-54

SECTION 5

HYDRAULIC SYSTEM

HYDRAULIC HOSE REPLACEMENT

S Flexible hose assemblies must not be

constructed from hoses which have

Hydraulic hoses are an important safety element in

been previously used as part of a

modern machinery. However, hose characteristics

hose assembly.

alter under pressure, thermal and UV light load over

S Do not weld to the piping.

the years. Therefore, most hoses now have a pro-

duction date printed on the metal clamp bushing

S If flexible hoses or piping are dam-

which allows to determine the age.

aged, replace them immediately.

Legislation in certain countries and good practice re-

S It is forbidden to modify an accumula-

quire that hydraulic hoses are replaced when they

tor by machining, welding or any

become 6 years old.

other means.

S Before removing accumulators for

servicing, the liquid pressure in the

CAUTION:

accumulator must be reduced to zero.

S Escaping fluid under pressure can

penetrate the skin causing serious in-

S Pressure check on accumulators

jury.

must be carried out by the method

Avoid the hazard by relieving pres-

recommended by the accumulator

sure before disconnecting hydraulic

manufacturer. Care must be taken not

orother lines. Tighten all connections

to exceed the maximum allowable

before applying pressure. Search for

pressure of the accumulator.

leaks with a piece of cardboard. Pro-

After any check of adjustment there

tect hands and body from high pres-

shall be no leakage of gas.

sure fluids.

IMPORTANT:

If an accident occurs, call for a doctor

The hydraulic valves on the left-hand side al-

immediately. Any fluid injected into

ways can be operated manually in case of

the skin must be surgically removed

electrical failure.

within a few hours. If not, gangrene

Push on the rubber caps of the solenoids to ac-

may result. Doctors unfamiliar with

tuate the hydraulic valve.

this type of injury should reference a

knowledgeable medical source.

Refer to Section 6 - TROUBLESHOOTING.

5-55

ADJUSTMENTS AND MAINTENANCE

ELECTRICAL SYSTEM

FUSES AND RELAYS -- Figures 99 and 100

All fuses and relays are situated in the box above the

right-hand traction wheel, except for the start relay

and the 12 - 24 V transformer (for these parts, refer to

the Service Parts Catalogue).

SUMMARY -- Figures 99 and 100

Item

Description

Connectors

Relays

Fuses

Power module

X31 - X39

K1 - K10

F1 - F37

CPU monitor

X44 - X46

(Central process unit)

Remote control printed circuit

X49 - X52

K32 - K48

Relay module

X53 - X56

K21 - K31

Header compensation

X57

control module

Lateral float and (ultrasonic)

X58 - X59A

autofloat module

Flex header reel speed printed

X59B - X65

circuit

2. When replacing a relay, make sure the

IMPORTANT:

new relay has the same ampere rating

1. When replacing a fuse, make sure the

and the same structure (visible on the

new fuse has the same ampere rating

relay housing).

as the fuse being replaced.

Always use genuine parts.

30231

51714

100

5-56

New Holland TX62, TX63, TX64 Plus, TX65 Plus, TX66, TX67, TX68, TX68 Plus. Operator's Manual - page 7