New holland tl90 tractor service repair manual

87043525 2/04 2004 CNH America LLC
Printed In U.S.A.
TL70, TL80, TL90, TL100
REPAIR MANUAL
COMPLETE CONTENTS
SECTION 00 - GENERAL GUIDELINES 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 10 - ENGINE 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 18 - CLUTCH 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 21 - TRANSMISSIONS 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 23 - DRIVE LINES 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 25 - FRONT AXLE MECHANICAL TRANSMISSION 7. . . . . . . . . . .
SECTION 27 - REAR AXLE MECHANICAL TRANSMISSION 8. . . . . . . . . . . . .
SECTION 31 - POWER TAKE-OFF 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 33 - BRAKES 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 35 - HYDRAULIC SYSTEMS 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 41 - STEERING 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 44 - AXLES AND WHEELS 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 50 - AUXILIARY UNITS 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 55 - ELECTRICAL SYSTEM 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 90 - BODYWORK AND DRIVING POSITION 25. . . . . . . . . . . . . . . . . .
The following pages are the collation of the contents pages from each section and
chapter of the TL Series Tractor Repair manual. Complete Repair part # 87043516.
The sections used through out all New Holland product Repair manuals may not be
used for each product. Each Repair manual will be made up of one or several books.
Each book will be labeled as to which sections are in the overall Repair manual and
which sections are in each book.
The sections listed above are the sections utilized for the TL Series Tractors.

SECTION 00 -- GENERAL GUIDELINES -- CHAPTER 1 1
GENERAL INSTRUCTIONS
IMPORTANT NOTICE
All maintenance and repair work described in this manual must be performed exclusively by NEW HOLLAND
service technicians, in strict accordance with the instructions given and using any specific tools necessary.
Anyone performing the operations described herein without strictly following the instructions is personally re-
sponsible for any eventual injury or damage to property.
SHIMMING
For each adjustment operation, select adjusting shims and measure individually using a micrometer, then add
up the recorded values. Do not rely on measuring the entire shimming set, which may be incorrect, or the rated
value indicated for each shim.
ROTATING SHAFT SEALS
For correct rotating shaft seal installation, proceed as follows:
-- before assembly, allow the seal to soak in the oil it will be sealing for at least thirty minutes;
-- thoroughly clean the shaft and check that the working surface on the shaft is not damaged;
-- position the sealing lip facing the fluid; with hydrodynamic lips, take into consideration the shaft rotation direc-
tion and position the grooves so that they will deviate the fluid towards the inner side of the seal;
-- coat the sealing lip with a thin layer of lubricant (use oil rather than grease) and fill the gap between the sealing
lip and the dust lip on double lip seals with grease;
-- insert the seal in its seat and press down using a flat punch; do not tap the seal with a hammer or mallet;
-- while inserting the seal, check that it is perpendicular to the seat; once settled, make sure that it makes con-
tact with the thrust element, if required;
-- to prevent damaging the seal lip on the shaft, position a protective guard during installation operations.
“O--RING” SEALS
Lubricate the O--RING seals before inserting them in the seats, this will prevent them from overturning and twist-
ing, which would jeopardise sealing efficiency.
SEALING COMPOUNDS
Apply one of the following sealing compounds on the mating surfaces marked with an X: RTV SILMATE, RHO-
DORSIL CAF 1 or LOCTITE PLASTIC GASKET.
Before applying the sealing compound, prepare the surfaces as follows:
-- remove any incrustations using a wire brush;
-- thoroughly de--grease the surfaces using one of the following cleaning agents: trichlorethylene, petrol or a
water and soda solution.

2 SECTION 00 -- GENERAL GUIDELINES -- CHAPTER 1
BEARINGS
When installing bearings it is advised to:
-- heat the bearings to 80 ÷ 90 °C before fitting on the shafts;
-- allow the bearings to cool before installing them.
SPRING PINS
When fitting split socket spring pins, ensure that the pin notch is positioned in the direction of the force required
to stress the pin.
Spiral spring pins do not require special positioning.
SPARE PARTS
Use solely genuine parts, which guarantee the same quality, duration and safety as the original parts as they
are identical to the ones fitted during production.
Only genuine parts can offer this guarantee.
When ordering spare parts, always provide the following information:
-- tractor model (commercial name) and frame number;
-- engine type and number;
-- part number of the ordered part, which can be found in the “Microfiches” or the “Spare Parts Catalogue”, used
for order processing.
TOOLS
The tools that NEW HOLLAND offer and illustrate in this manual are:
-- specifically researched and designed for use with NEW HOLLAND vehicles;
-- essential for reliable repair operations;
-- accurately built and rigorously tested so as to offer efficient and long--lasting operation.
By using these tools, repair personnel will benefit from:
-- operating in optimal technical conditions;
-- obtaining the best results;
-- saving time and effort;
-- working in safe conditions.
IMPORTANT NOTES
Wear limit values indicated for certain parts are recommended, but not binding. The terms “front”, “rear”, “right--
hand” and “left--hand” (when referred to different parts) are intended as seen from the driving position with the
vehicle in the normal direction of movement.
MOVING THE TRACTOR WITH THE BATTERY REMOVED
External power supply cables should only be connected to the respective positive and negative cable terminals,
using efficient clamps that guarantee adequate and secure contact.
Disconnect all services (lights, windshield wipers, etc.) before starting the vehicle.
If the vehicle electrical system requires checking, carry out operations with the power supply connected. Once
checking is completed, disconnect all services and switch off the power supply before disconnecting the cables.

SAFETY REGULATIONS
PAY ATTENTION TO THIS SYMBOL
This warning symbol points out important messages concerning your safety.
Carefully read the following safety regulations and observe advised precautions in
order to avoid potential hazards and safeguard your health and safety.
In this manual the symbol is accompanied by the following key--words:
CAUTION -- Warnings concerning unsuitable repair operations that may jeopardise the
safety of Service personnel.
DANGER -- Specific warnings concerning potential hazards for operator safety or for
other persons directly or indirectly involved.
ACCIDENT PREVENTION
Most accidents or injuries that occur in workshops
are the result of non--observance of simple and fun-
damental safety regulations.
For this reason, IN MOST CASES THESE ACCI-
DENTS CAN BE AVOIDED by foreseeing possible
causes and consequently acting with the necessary
caution and care.
Accidents may occur with all types of vehicle, regard-
less of how well it was designed and built.
A careful and judicious service technician is the best
guarantee against accidents.
Precise observance of the most basic safety rule is
normally sufficient to avoid many serious accidents.
DANGER. Never carry out any cleaning, lubrication
or maintenance operations when the engine is run-
ning.
SAFETY REGULATIONS
GENERAL GUIDELINES
-- Carefully follow specified repair and mainten-
ance procedures.
-- Do not wear rings, wristwatches, jewellery, un-
buttoned or loose articles of clothing such as:
ties, torn clothing, scarves, open jackets or shirts
with open zips that may remain entangled in
moving parts.
It is advised to wear approved safety clothing,
e.g.: non--slip footwear, gloves, safety goggles,
helmets, etc.
-- Do not carry out repair operations with someone
sitting in the driver’s seat, unless the person is a
trained technician who is assisting with the oper-
ation in question.
-- Operate the vehicle and use the implements ex-
clusively from the driver’s seat.
-- Do not carry out operations on the vehicle with
the engine running, unless specifically indicated.
-- Stop the engine and check that the hydraulic cir-
cuits are pressure--free before removing caps,
covers, valves, etc.
-- All repair and maintenance operations must be
carried out using extreme care and attention.
-- Service steps and platforms used in a workshop
or in the field should be built in compliance with
the safety rules in force.
-- Disconnect the batteries and label all controls to
indicate that the vehicle is being serviced. Any
parts that are to be raised must be locked in posi-
tion.
-- Do not check or fill fuel tanks, accumulator bat-
teries, nor use starting liquid when smoking or
near naked flames, as these fluids are inflam-
mable.
-- Brakes are inoperative if manually released for
repair or maintenance purposes.
Use blocks or similar devices to secure the ma-
chine in these conditions.
-- The fuel nozzle should always be in contact with
the filling aperture. Maintain this position until fill-
ing operations are completed in order to avoid
possible sparks caused by the accumulation of
static electricity.

-- Only use specified towing points for towing the
tractor, connect parts carefully. Make sure that all
pins and/or locks are secured in position before
applying traction.
Never remain near the towing bars, cables or
chains that are operating under load.
-- Transport vehicles that cannot be driven using a
trailer or a low--loading platform trolley, if avail-
able.
-- When loading or unloading the vehicle from the
trailer (or other means of transport), select a flat
area capable of sustaining the trailer or truck
wheels, firmly secure the tractor to the truck or
trailer and lock the wheels in the position.
-- Electric heaters, battery--chargers and similar
equipment must only be powered by auxiliary
power supplies with efficient ground insulation to
avoid electrical shock hazards.
-- Always use suitable hoisting or lifting devices
when raising or moving heavy parts.
-- Take extra care if bystanders are present.
-- Never pour gasoline or diesel oil into open, wide
and low containers.
-- Never use gasoline, diesel oil or other inflam-
mable liquids as cleaning agents. Use non--in-
flammable, non toxic commercially available sol-
vents.
-- Wear safety goggles with side guards when
cleaning parts with compressed air.
-- Limit the air pressure to a maximum of 2.1 bar,
according to local regulations.
-- Do not run the engine in confined spaces without
suitable ventilation.
-- Do not smoke, use naked flames, or cause
sparks in the area when fuel filling or handling
highly inflammable liquids.
-- Never use naked flames for lighting when work-
ing on the machine or checking for “leaks.”
-- All movements must be carried out carefully
when working under, on or near the vehicle and
wear protective equipment: helmets, goggles
and special footwear.
-- When carrying out checks with the engine run-
ning, request the assistance of an operator in the
driver’s seat. The operator must maintain visual
contact with the service technician at all times.
-- If operating outside the workshop, position the
vehicle on a flat surface and lock in position. If
working on a slope, lock the vehicle in position
and move to a flat area as soon as is safely poss-
ible.
-- Damaged or bent chains or cables are unreliable.
Do not use them for lifting or towing.
Always use suitable protective gloves when
handling chains or cables.
-- Chains should always be safely secured. Make
sure that the hitch--up point is capable of sustain-
ing the load in question.
Keep the area near the hitch--up point, chains or
cables free of all bystanders.
-- Maintenance and repair operations must be car-
ried out in a CLEAN and DRY area, eliminate any
water or oil spillage immediately.
-- Do not create piles of oil or grease--soaked rags
as they represent a serious fire hazard; store
them in a closed metal container.
Before starting the vehicle or implements, make
sure that the driver’s seat is locked in position
and always check that the area is free of persons
or obstacles.
-- Empty pockets of all objects that may fall unob-
served into the vehicle parts when disas-
sembled.
-- In the presence of protruding metal parts, use
protective goggles or goggles with side guards,
helmets, special footwear and gloves.
-- When welding, use protective safety devices:
tinted safety goggles, helmets, special overalls,
gloves and footwear. All persons present in the
area where welding is taking place must wear
tinted goggles.
NEVER LOOK DIRECTLY AT THE WELDING
ARC WITHOUT SUITABLE EYE PROTECTION.
-- Metal cables tend to fray with repeated use. Al-
ways use suitable protective devices (gloves,
goggles, etc.) when handling cables.
-- Handle all parts carefully, do not put your hands
or fingers between moving parts, wear suitable
safety clothing -- safety goggles, gloves and
shoes.

START UP
-- Never start the engine in confined spaces that
are not equipped with adequate ventilation for
exhaust gas extraction.
-- Never bring your head, body, arms, legs, feet,
hands, fingers near fans or rotating belts.
ENGINE
-- Always loosen the radiator cap slowly before re-
moving it to allow any remaining pressure in the
system to be discharged. Coolant should only be
added when the engine is stopped or idling, if hot.
-- Never fill up with fuel when the engine is running,
especially if hot, in order to prevent the outbreak
of fire as a result of fuel spillage.
-- Never check or adjust fan belt tension when the
engine is running.
Never adjust the fuel injection pump when the ve-
hicle is moving.
-- Never lubricate the vehicle when the engine is
running.
ELECTRICAL SYSTEMS
-- If it is necessary to use auxiliary batteries, re-
member that both ends of the cables must be
connected as follows: (+) with (+) and (--) with (--).
-- Avoid short--circuiting the terminals. GAS RE-
LEASED FROM BATTERIES IS HIGHLY IN-
FLAMMABLE.
-- During charging, leave the battery compartment
uncovered to improve ventilation.
-- Never check the battery charge using “jumpers”
(metal objects placed on the terminals).
-- Avoid sparks or flames near the battery zone to
prevent explosion hazards.
-- Before servicing operations, check for fuel or cur-
rent leaks. Eliminate any eventual leaks before
starting work.
-- Never charge batteries in confined spaces. Make
sure that there is adequate ventilation in order to
prevent accidental explosion hazards as a result
of the accumulation of gases released during
charging operations.
-- Always disconnect the battery before performing
any kind of servicing on the electrical system.
HYDRAULIC SYSTEMS
-- A liquid leaking from a tiny hole may be almost in-
visible but, at the same time, be powerful enough
to penetrate the skin. Check for leaks using a
piece of cardboard, NEVER USE HANDS.
-- If any liquid penetrates skin tissue, call for medi-
cal aid immediately.
-- Serious skin infections may result if medical
attention is not given.
-- Use the specific tools when checking pressure
values on the hydraulic system.
WHEELS AND TIRES
-- Check that the tires are correctly inflated at the
pressure specified by the manufacturer.
Periodically check possible damages to the rims
and tires.
-- Stand away from (at the side of) the tire when
checking inflation pressure.
-- Only check pressure when the tractor is un-
loaded and the tires are cold, to avoid incorrect
readings as a result of over--pressure.
-- Do not re--use parts of recovered wheels as in-
correct welding or brazing may heat the material,
causing it to weaken and eventually damage or
break the wheel.
-- Never cut or weld a rim mounted with an inflated
tire.
-- When removing the wheels, lock both the front
and rear vehicle wheels.
-- Always position support stands when raising the
vehicle, in order to conform to current safety re-
gulations.
-- Deflate the tire before removing any object
caught in the tire tread.
-- Never inflate tires using inflammable gases; this
could cause an explosion and put operator safety
at risk.
REMOVAL AND INSTALLATION
-- Lift and handle all heavy parts using suitable lift-
ing equipment and make sure that all slings and
hooks are correctly secured.
-- Handle all parts carefully during lifting oper-
ations, keep an eye on the personnel working
near the load to be lifted. Never insert hands or
fingers between parts, always wear approved
accident prevention clothing (goggles, gloves
and work boots).
-- Avoid twisting chains or metal cables and always
wear safety gloves when handling cables or
chains.

CONSUMABLES
COMPONENT TO BE
FILLED OR TOPPED UP
QUANTITY
dm3
US Gallon
(litres)
RECOMMENDED
NEW HOLLAND
PRODUCT
NEW HOLLAND
SPECIFICA-
TIONS
INTERNATIONAL
SPECIFICATIONS
Cooling system:
without cab: . . . . . . . . . . .
with cab: . . . . . . . . . . . . . .
3.69 (14)
4.22 (16)
Water and
AMBRA
AGRIFLU
fluid 50% + 50%
NH 900 A --
Windscreen washer reservoir
0.52 (2)
Water and liquid
detergent
-- --
Fuel tank
models TL70, TL80 . . . . .
models TL90, TL100 . . . .
30.37 (115)
35.66 (135)
Decanted and
filtered diesel fuel
-- --
Engine sump:
without filter: . . . . . . . . . . .
with filter: . . . . . . . . . . . . .
2.35 (8.9)
2.50 (9.5)
AMBRA SUPER
GOLD
15W -- 40
oil or
10W -- 30
NH 330G
(SAE 15W--40)
NH 324G
(SAE 10W--30)
API CF--4/SG
CCMC D4
MIL--L--2104E
Brake control circuit
without front brakes . . . . 0.10 (0.4)
AMBRA BRAKE
LHM fluid
NH 610 A
ISO 7308
Hydrostatic steering circuit . . 0.52 (2.0)
Front axle:
axle casing:
model TL70 . . . . . . . . . . .
models TL80, TL90, TL100
final drives (each):
model TL70 . . . . . . . . . . .
1.18 (4.5)
1.84 (7.0)
0.21 (0.8)
0.33 (1.25)
AMBRA MULTI G
oil
NH 410 B
API GL4
ISO 32/46
SAE 10W--30
Rear transmission (bevel dri-
ve, final drives and brakes),
gearbox, hydraulic lift, PTO
and hydraulic steering:
model TL70 . . . . . . . . . . .
12.94 (49)
14.52 (55)
SAE 10W--30
Front wheel hubs . . . . . . . . . . --
AMBRA GR9 NH 710 A NLGI 2
Grease fittings . . . . . . . . . . . . --
AMBRA GR9
grease
NH 710 A NLGI 2

SECTION 10 -- ENGINE -- CHAPTER 1 1
SECTION 10 -- ENGINE
Chapter 1 -- Engine
CONTENTS
Operation Description Page
General specifications 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tightening Torques 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tools 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cross--sectional views 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lubrication diagram 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling system diagram 28. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fault diagnosis 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 001 10 Engine R.I. 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 001 30 Engine. Compression Test 48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 001 53 Engine D.A. Checks, dimensions and repairs 49. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 101 53 Valve guides -- Replacement 91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 101 60 Injector sleeve -- Replacement 95. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 102 70 Crankshaft front seal -- Replacement 97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 106 12 Valve tappet clearance -- Adjustment 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 218 30 Engine injector R.I. 103. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 246 14 Bosch injection pump R.I. Timing. Air bleed 106. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 402 10 Coolant pump R.I. 114. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 402 28 Coolant pump D.A. 117. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 402 30 Thermostat valve R.I. 118. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 406 10 Radiator R.I. 122. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 414 10 Coolant pump and generator drive belts. Tension adjustment 126. . . . . . . . . . . . . . . . . . . . . .

2 SECTION 10 -- ENGINE -- CHAPTER 1
GENERAL SPECIFICATIONS 4 cylinders
Engine, technical type:
-- model TL70 -- type 8045.06R.412/414 . . . . . . . . . . . . . . . See data on page 6
-- model TL70 -- type 8045.06R.513 (North American only) . . See data on page 6
-- model TL80 -- type 8045.05R.412/414 . . . . . . . . . . . . . . . See data on page 8
-- model TL80 -- type 8045.05R.512/513/518
(North American only) . . . . . . . .
See data on page 8
-- model TL90 -- type 8045.25.402/404 . . . . . . . . . . . . . . . . See data on page 10
-- model TL90 -- type 8045.25.502/503 (North American only) See data on page 10
-- model TL100 -- type 8045.25K.413 . . . . . . . . . . . . . . . . . See data on page 12
-- model TL100 -- type 8045.25K.513 (North American only) . See data on page 12
Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . diesel, 4--stroke
Direct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . injection
Number of cylinders in line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Cylinder liners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dry force--fitted in cylinder block
Piston diameter
-- model TL70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.94 inch (100 mm)
-- model TL80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 inch (104 mm)
-- model TL90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 inch (104 mm)
-- model TL100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.1 inch (104 mm)
Piston stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4.52 inch (115 mm)
Total displacement:
-- model TL70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3613 cm3
-- model TL80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3908 cm3
-- model TL90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3908 cm3
-- model TL100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3908 cm3
Compression ratio for models TL70 and TL80 . . . . . . . . . . . . . . 17:1 normally aspirated
Compression ratio for models TL90 and TL100 . . . . . . . . . . . . . 16.5:1 turbocharged
Maximum power:
-- model TL70 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48 kW (65 Hp)
-- model TL80 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56 kW (75 Hp)
-- model TL90 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 kW (85 Hp)
-- model TL100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 kW (95 Hp)
Maximum power speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 rev/min
Maximum torque speed -- model TL70 . . . . . . . . . . . . . . . . . . . . . 1400 rpm
Maximum torque speed -- model TL80 . . . . . . . . . . . . . . . . . . . . . 1400 rpm
Maximum torque speed -- model TL90 . . . . . . . . . . . . . . . . . . . . . 1500 rev/min
Maximum torque speed -- model TL100 . . . . . . . . . . . . . . . . . . 1500 rev/min
Number of main bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Sump pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . structural, cast iron
(continued)

1
2
345
7
6
25357
3
Engine longitudinal cross section -- 4--cylinder models TL70 and TL80

Op. 10 001 10
ENGINE R.I.
DANGER
Lift and handle all heavy parts using suitable lifting
equipment.
Make sure that assemblies or parts are supported by
means of suitable slings and hooks. Check that no
one is in the vicinity of the load to be lifted.
CAUTION
Always use appropriate tools to align fixing holes.
NEVER USE FINGERS OR HANDS.
1. Disconnect the battery negative cable (A).
2. Drain the oil from the transmission--gearbox
housing.
3. Drain off the coolant from the engine cooling sys-
tem.
4. Remove the tool box and relative support bracket
(1).
1
25025
7
5. Remove the split pins, lock pins and front ballast
(1).
25026
1
8

6. Remove the exhaust pipe, raise the bonnet and
disconnect the front headlight (2) connections
(1).
1
2
MDD2558A
9
7. Disconnect the gas springs (1) from the bonnet.
1
MDD2559A
10
8. Unscrew the four bolts (1) retaining the hinge
bracket and remove the bonnet.
1
24875
11
9. Remove the fan guard (1) on the right--hand side.
MDD2560A
1
12

10. Remove the metal clamp (1) securing the rigid oil
pump and lift oil delivery lines.
1
25029
13
11. Extract the sleeve (1) on the services pump prim-
ing pipe.
1
25030
14
12. Extract the sleeve (1) on the lift pump priming
pipe.
25031
1
15
13. Detach the lift pump delivery line (1).
25032
1
16

14. Detach the fuel line (1) and the glowplug.
25033
1
17
15. Detach the injectors fuel recovery line (1) and the
tank/decanting filter connecting line.
MDD2561A
1
18
16. Detach the support, complete with diesel filter
(1).
25035
1
19
17. Remove the brakes flexible piping retaining
bracket (1).
1
25036
20

18. Disconnect the coolant temperature sensor elec-
trical connection (1).
1
25037
21
19. Disconnect the electrical connections (1) be-
tween the cab and the engine.
20. Disconnect the engine oil pressure sensor elec-
trical connection.
1
25045
22
21. Detach the rev counter/hourmeter control and re-
move the clamp from the relative sheath.
22. Disconnect the two power steering oil delivery
and return hoses (1).
1
24879
23
23. Disconnect the hose (1) from the anticavitation
expansion box (2) located on the power steering
unit return line.
24881
1
2
24

24. Unscrew the front central and rear retaining bolts
on the front axle shaft guard, then remove the
guard (1).
25038
1
25
25. Remove the circlip (2) and move the sleeve (1)
in the direction indicated by the arrow until it is re-
leased from the groove on the front axle.
25039
1 2
26
26. Remove the circlip (2) and move the sleeve (1)
in the direction indicated by the arrow until it is re-
leased from the groove on the drive.
25040
1
2
27
27. Remove the drive shaft central support (1) retain-
ing bolts and extract the shaft together with the
support.
1
25041
28

28. Detach the FWD engagement distributor oil de-
livery line (1).
25042
1
29
29. Remove the four knobs (1) and remove the two
dashboard panels (2).
MDD2562A
1 2
30
30. Extract the differential lock pedal retaining pin
from the drive shaft (1), remove the pedal and
footboard (2).
25043
1
2
31
31. Remove the footboard and plugs (1) in order to
gain access to the engine upper retaining bolts.
25044
1
32

32. Detach the accelerator cable from the pedal (1).
24939
1
33
33. Remove the two front nuts (2) (one on each side)
that secure the cab to the silent--blocks fitted on
the supports (1).
24950
2 1
34
34. Raise the cab from the front by approximately
2.362 in. (6 cm).
24883
35
35. Unscrew the two nuts and bolts that secure the
engine to the transmission, gaining access by
means of the two slots (1).
25048
1
36

36. Unscrew the four lower bolts (1) that secure the
engine to the transmission.
25049
1
37
37. Position tool 380000236 (2) under the tractor and
insert two blocks (1) on the front axle to avoid os-
cillation.
25050
1 2
38
38. Position a wooden block (1) at the point where
the stand makes contact with the tractor.
25051
1
39
39. Position a fixed stand (1) under the towbar and
apply the handbrake.
25052
1
40

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40. Detach the cab heating pipes support bracket
(1).
41. Unscrew the remaining four engine/transmission
retaining bolts.
42. Disconnect the two electrical connectors on the
right--hand side of the dashboard.
43. Separate the engine from the transmission.
1
25053
41
44. Remove the spacer (1) located between the en-
gine and the transmission. 1
25055
42
45. Position the fixed stand (1) under the ballast sup-
port and secure the front wheels with wooden
blocks (2).
1 225056
43
46. Insert tool (1) 380000292 in the clutch aperture.
Unscrew the six retaining bolts (2) that secure the
clutch to the engine flywheel and remove the as-
sembly.
1
225057
44

47. Remove the radiator bracket retaining screw.
48. Hitch the engine to a hoist using the adjustable
chain (1) attached to the engine removal hitch
points.
25060
1
45
49. Remove the lift pump (1) with the relative filter, by
unscrewing the four retaining bolts.
1
MDD2563A
46
50. Disconnect all electrical connections and re-
move the wiring (1).
MDD2564A
1
25062
47
51. Loosen the clamp and disconnect the sleeve (1)
on the intake manifold.
1
25063
48

52. Remove the fan mesh guard (1) from the left--
hand side of the engine.
1
25064
49
53. Remove the clamp and extract the exhaust ejec-
tor filter connection (1).
25065
1
50
54. Remove the exhaust retaining bolts (1) from the
support bracket.
1
MDD2565A
51
55. Remove the clamp and extract the radiator upper
sleeve (1).
56. Unscrew the three nuts (2) that secure the si-
lencer to the manifold and remove the unit.
1
2
25067
52

New holland tl90 tractor service repair manual

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