Case ih jx1090 u tractor service repair manual

87054735 10/04© 2004 CNH America LLC
Printed In U.S.A.
JX1080U, JX1090U, JX1100U
REPAIR MANUAL
COMPLETE CONTENTS
SECTION 00 - GENERAL 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 10 - ENGINE 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 18 - CLUTCH 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 21 - TRANSMISSIONS 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 23 - MFD TRANSFER BOX 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 25 - MFD AXLE 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 27 - REAR AXLE MECHANICAL TRANSMISSION 11. . . . . . . . . . . . .
SECTION 31 - POWER TAKE-OFF 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 33 - BRAKES 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 35 - HYDRAULIC SYSTEMS 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 41 - STEERING 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 44 - AXLES AND WHEELS 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 50 - AUXILIARY UNITS 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 55 - ELECTRICAL SYSTEMS 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 90 - CAB, PLATFORM AND BODYWORK 35. . . . . . . . . . . . . . . . . . . .
The following pages are the collation of the contents pages from each section and
chapter of the JX1080U, JX1090U, JX1100U Repair manual. Complete Repair part #
87054727.
The sections used through out all Case IH 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 JX1080U, JX1090U, JX1100U
Tractors.

SECTION 00 -- GENERAL -- CHAPTER 1 1
SECTION 00 - GENERAL
Chapter 1 - General
CONTENTS
Section Description Page
General Instructions 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Health and Safety 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Precautionary Statements 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Safety 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ecology and the Environment 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Minimum Hardware Tightening Torques 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Federal Emissions Warranty 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
California Emission Control Warranty Statement 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Filling and Topping-Up Operations 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SECTION 00 -- GENERAL -- CHAPTER 12
WARNING
All maintenance and repair work described in
this manual must be performed exclusively by
CASE IH service technicians in strict accordance
with the instructions given and using any
specific tools necessary.
WARNING
Anyone who performs the operations described
herein without strictly following the instructions
is personally responsible for resulting injury or
damage to property.
WARNING
The Manufacturer and all organizations belong-
ing to the Manufacturer’s distribution network,
including but not restricted to national, regional
or local distributors, will accept no responsibility
for personal injury or damage to property caused
by abnormal function of parts and/or compo-
nents not approved by the Manufacturer,
including those used for maintenance and/or
repair of the product manufactured or marketed
by the Manufacturer. In any case, the product
manufactured or marketed by the Manufacturer
is covered by no guarantee of any kind against
personal injury or damage to property caused by
abnormal function of parts and/or components
not approved by the Manufacturer.

GENERAL INSTRUCTIONS
IMPORTANT NOTICE
All maintenance and repair operations described in
this manual should be carried out exclusively by the
authorised workshops. All instructions detailed
should be carefully observed and special equipment
indicated should be used if necessary.
Everyone who carries out service operations
described without carefully observing these prescrip-
tions will be directly responsible of deriving
damages.
SHIMMING
At each adjustment, select adjusting shims, measure
them individually using a micrometer and then sum
up recorded values. Do not rely on measuring the
whole shimming set, which may be incorrect, or on
the rated value indicated for each shim.
ROTATING SHAFT SEALS
To correctly install rotating shaft seals, observe the
following instructions:
• Let the seal soak into the same oil as it will seal
for at least half an hour before mounting;
• Thoroughly clean the shaft and ensure that the
shaft working surface is not damaged;
• Place the sealing lip towards the fluid. In case of
a hydrodynamic lip, consider the shaft rotation
direction and orient grooves in order that they
deviate the fluid towards the inner side of the
seal;
• Coat the sealing lip with a thin layer of lubricant
(oil rather than grease) and fill the gap between
the sealing lip and the dust lip of double lip seals
with grease;
• Insert the seal into its seat and press it down
using a flat punch. Do not tap the seal with a
hammer or a drift;
• Take care to insert the seal perpendicularly to its
seat while you are pressing it. Once the seal is
settled, ensure that it contacts the thrust element,
if required;
• To prevent damaging the sealing lip against the
shaft, place a suitable protection during
installation.
O RINGS
Lubricate the O rings before inserting them into their
seats. This will prevent the O rings from roll over and
twisting during mounting, which will jeopardize
sealing.
SEALERS
Apply silicone/gasket eliminator over the mating
surfaces marked with an X.
Before applying the sealer, prepare the surface as
follows:
• remove possible scales using a metal brush;
• thoroughly degrease the surfaces using one of
the following cleaning agents: trichlorethylene,
diesel fuel or a water and soda solution.
BEARINGS
It is advisable to heat the bearings to 80° to 90°C
(176° to 194°F) before mounting them on their shafts
and cool them down before inserting them into their
seats with external tapping.
SPRING PINS
When mounting split socket spring pins, ensure that
the pin notch is oriented in the direction of the effort
to stress the pin.
Spiral spring pins should not be oriented during
installation.

GENERAL INSTRUCTIONS
PRECAUTIONARY NOTICE
Only authorized workshops should carry out maintenance and repair operations on the tractor, or tractor compo-
nents. Carefully observe all instructions, safety precautions, and the use of equipment such as special tools, as
detailed in this manual. Damage to the tractor, or injury to personnel is the direct responsibility of anyone who
fails to observe these precautions.
EQUIPMENT NOTICE
The equipment proposed in this manual is:
• Designed and studied expressly for use on Case IH tractors
• Necessary for adequate and reliable repair of the tractor
• Strictly tested for the efficient and long lasting life cycle of the tractor
SPARE PARTS NOTICE
Genuine CASE IH spare parts guarantee the same quality, safety and life cycle as original components. These
parts bear the logo.
GENERAL NOTICES
In this manual, the description ’FRONT’, ’REAR’, ’RIGHT--HAND’ and ’LEFT--HAND’ refer to the view seen by
the operator while in the operator’s seat, looking in the direction in which the tractor normally moves.
Wear limits detailed in this manual, although advised, are not binding.

HEALTH AND SAFETY
CONTENTS
Description Page
HEALTH AND SAFETY PRECAUTIONS 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ACIDS AND ALKALIS 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ADHESIVES AND SEALERS -- see Fire 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ANTIFREEZE -- see Fire, Solvents e.g. Isopropanol, Ethylene Glycol, Methanol. 6. . . . . . . . . . . . . . . . . . . . . .
ARC WELDING -- see Welding. 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BATTERY ACIDS -- see Acids and Alkalis. 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BRAKE AND CLUTCH FLUIDS (Polyalkylene Glycols) -- see Fire. 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
BRAZING -- see Welding. 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CHEMICAL MATERIALS -- GENERAL -- see Legal Aspects. 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DO’S 7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DO NOTS 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
CORROSION PROTECTION MATERIALS -- see Solvents, Fire. 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DUSTS 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ELECTRIC SHOCK 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
EXHAUST FUMES 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIBRE INSULATION -- see Dusts. 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIRE -- see Welding, Foams, Legal Aspects. 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FIRST AID 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FOAMS -- Polyurethane -- see Fire. 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FUELS -- see Fire, Legal Aspects, Chemicals -- General, Solvents. 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GAS CYLINDERS -- see Fire. 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
GENERAL WORKSHOP TOOLS AND EQUIPMENT 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LEGAL ASPECTS 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LUBRICANTS AND GREASES 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PAINTS -- see Solvents and Chemical Materials -- General. 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOLDER -- see Welding. 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SOLVENTS -- see Chemical Materials -- General Fuels (Kerosene), Fire. 13. . . . . . . . . . . . . . . . . . . . . . . . . . .
SUSPENDED LOADS 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
WELDING -- see Fire, Electric Shock, Gas Cylinders. 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
HEALTH AND SAFETY PRECAUTIONS
Many of the procedures associated with vehicle
maintenance and repair involve physical hazards or
other risks to health. This section lists, alphabeti-
cally, some of these hazardous operations and the
materials and equipment associated with them. The
precautions necessary to avoid these hazards are
identified.
The list is not exhaustive and all operations and
procedures and the handling of materials, should be
carried out with health and safety in mind.

ACIDS AND ALKALIS -- see Battery acids, e.g.
caustic soda, sulfuric acid.
Used in batteries and cleaning materials.
Irritant and corrosive to the skin, eyes, nose and
throat. Causes burns.
Avoid splashes to the skin, eyes and clothing. Wear
suitable protective gloves and goggles. Can destroy
ordinary protective clothing. Do not breathe mists.
Ensure access to water and soap is readily available
for splashing accidents.
ADHESIVES AND SEALERS -- see Fire
Highly Flammable, Flammable, combustible.
Generally should be stored in “No Smoking” areas;
cleanliness and tidiness in use should be observed,
e.g. disposable paper covering benches; should be
dispensed from applicators where possible; contain-
ers, including secondary containers, should be
labelled.
Solvent based Adhesives/Sealers -- See Solvents.
Follow manufacturers instructions.
Water based Adhesives/Sealers
Those based on polymer emulsions and rubber
lattices may contain small amounts of volatile toxic
and harmful chemicals. Skin and eye contact should
be avoided and adequate ventilation provided during
use.
Follow manufacturers instructions.
Resin based Adhesives/Sealers -- e.g. epoxide
and formaldehyde resin based.
Mixing should only be carried out in well ventilated
areas as harmful or toxic volatile chemicals may be
released.
Skin contact with uncured resins and hardeners can
result in irritation; dermatitis and absorption of toxic
or harmful chemicals through the skin. Splashes can
damage the eyes.
Provide adequate ventilation and avoid skin and eye
contact. Follow manufacturers instructions.
Anaerobic, Cyanoacrylate and other Acrylic
Adhesives
Many are irritant, sensitizing or harmful to the skin.
Some are eye irritants.
Skin and eye contact should be avoided and the
manufacturers instructions followed.
Cyanoacrylate adhesives (super--glues) must not
contact the skin or eyes. If skin or eye tissue is
bonded cover with a clean moist pad and get medical
attention. do not attempt to pull tissue apart. Use in
well ventilated areas as vapours can cause irritation
of the nose and eyes.
For two--pack systems see Resin based adhesives/
sealers.
Isocyanate (Polyurethane) Adhesives/
Sealers -- see Resin based Adhesives.
Individuals suffering from asthma or respiratory
allergies should not work with or near these materials
as sensitivity reactions can occur.
Any spraying should preferably be carried out in
exhaust ventilated booths removing vapours and
spray droplets from the breathing zone. Individuals
working with spray applications should wear
supplied air respirators.
ANTIFREEZE -- see Fire, Solvents e.g.
Isopropanol, Ethylene Glycol, Methanol.
Highly Flammable, Flammable, Combustible.
Used in vehicle coolant systems, brake air pressure
systems, screenwash solutions.
Vapours given off from coolant antifreeze (glycol)
arise only when heated.
Antifreeze may be absorbed through the skin in toxic
or harmful quantities. Antifreeze if swallowed is fatal
and medical attention must be found immediately.

ARC WELDING -- see Welding.
BATTERY ACIDS -- see Acids and Alkalis.
Gases released during charging are explosive.
Never use naked flames or allow sparks near
charging or recently charged batteries.
BRAKE AND CLUTCH FLUIDS
(Polyalkylene Glycols) -- see Fire.
Combustible.
Splashes to the skin and eyes are slightly irritating.
Avoid skin and eye contact as far as possible.
Inhalation of vapour hazards do not arise at ambient
temperatures because of the very low vapour
pressure.
BRAZING -- see Welding.
CHEMICAL MATERIALS -- GENERAL -- see
Legal Aspects.
Chemical materials such as solvents, sealers,
adhesives, paints, resin foams, battery acids,
antifreeze, brake fluids, oils and grease should
always be used with caution and stored and handled
with care. They may be toxic, harmful, corrosive,
irritant or highly inflammable and give rise to
hazardous fumes and dusts.
The effects of excessive exposure to chemicals may
be immediate or delayed; briefly experienced or
permanent; cumulative; superficial; life threatening;
or may reduce life--expectancy.
DO’S
Do remove chemical materials from the skin and
clothing as soon as practicable after soiling. Change
heavily soiled clothing and have it cleaned.
Do carefully read and observe hazard and
precaution warnings given on material containers
(labels) and in any accompanying leaflets, poster or
other instructions. Material health and safety data
sheets can be obtained from Manufacturers.
Do organise work practices and protective clothing to
avoid soiling of the skin and eyes; breathing
vapours/aerosols/dusts/fumes; inadequate contain-
er labelling; fire and explosion hazards.
Do wash before job breaks; before eating, smoking,
drinking or using toilet facilities when handling
chemical materials.
Do keep work areas clean, uncluttered and free of
spills.
Do store according to national and local regulations.
Do keep chemical materials out of reach of children.

SECTION 10 -- ENGINE -- CHAPTER 1 1
SECTION 10 -- ENGINE
Chapter 1 -- Engine
CONTENTS
Operation Description Page
Specifications 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tightening Torques 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Torque Settings with Angle 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Special Tools 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Description and Operation 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sectional Views 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overhaul 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 001 10 Engine 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Disassembly 46. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Assembly 57. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checks, Measurements and Repairs 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Block Liners 80. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft 83. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Connecting Rods 85. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pistons 87. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Camshaft and Valves 91. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Head 95. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Pressure Indicator 96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil Filter 96. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cooling System 97. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankshaft Front Seal 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 98. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 100. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 102 74 Crankshaft Rear Seal 101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 101. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 102. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 106 12 Valve Tappet and Rocker Arm 104. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clearance Adjustment 104. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2 SECTION 10 -- ENGINE -- CHAPTER 1
Operation Description Page
10 218 30 Fuel Injectors 107. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 107. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 108. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 246 14 Bosch Injection Pump 110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 110. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 113. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Procedure 115. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Circuit Air Bleeding 117. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Turbocharged Diesel Engine 118. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 402 10 Coolant Pump 121. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 121. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 122. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 402 30 Thermostart Valve 123. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 123. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 124. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 406 10 Radiator 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Removal 125. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Installation 129. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 414 10 Coolant Pump and Alternator Drive Belts 131. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tension Adjustment 131. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SPECIFICATIONS
4 Cylinders
Engine, type:
-- model JX1080U -- Naturally Aspirated . . . . . . . . . . . . . . . . . . F4CE0404C*D681
-- model JX1090U -- Turbocharged . . . . . . . . . . . . . . . . . . . . . . F4CE0454E*D681
-- model JX1100U -- Turbocharged . . . . . . . . . . . . . . . . . . . . . . F4CE0454D*D681
Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . diesel, 4--stroke
Fuel injection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . direct
Number of cylinders in line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Piston diameter (bore)
-- model JX1080U -- JX1090U -- JX1100U . . . . . . . . . . . . . . . . 4.0944 in. (104 mm)
Piston stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.1968 in. (132 mm)
Total displacement:
-- model JX1080U -- JX1090U -- JX1100U . . . . . . . . . . . . . . . . 273.67 in3. (4.5L)
Compression ratio for Models JX1080U -- JX1090U -- JX1100U 17.5:1
Maximum power:
-- model JX1080U -- F4CE0404C*D681 . . . . . . . . . . . . . . . . . . 60 kW (80 HP)
-- model JX1090U -- F4CE0454E*D681 . . . . . . . . . . . . . . . . . . 67 kW (90 HP)
-- model JX1100U -- F4CE0454D*D681 . . . . . . . . . . . . . . . . . . 73.5 kW (98 HP)
Rated speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 rev/min
Maximum Torque @ 1400 rev/min
-- Maximum torque: model JX1080U -- F4CE0404C*D681 . . 320 Nm (236 lb.-ft.)
-- Maximum torque: model JX1090U -- F4CE0454E*D681 . . 350 Nm (258 lb.-ft.)
-- Maximum torque: model JX1100U -- F4CE0454D*D681 . . 370 Nm (272 lb.-ft.)
Number of main bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Sump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . structural, cast iron
(continued)

(cont)
4 Cylinders
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . forced, with lobe pump
Pump drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . camshaft
Engine speed/oil pump speed ratio . . . . . . . . . . . . . . . . . . . . . . . . 1:1
Oil cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . mesh filter on oil intake and filtering
cartridge on delivery line
Normal oil pressure with motor warmed--up
at slow idling speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17.4 psi (1.2 bar)
at fast idling speed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55.1 psi (3.8 bar)
Cooling system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . coolant circulation
Radiator on Models JX1080U -- JX1090U -- JX1100U . . . . . . . . 4 rows of vertical pipes with copper fins
Fan, attached to the pulley . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . intake, in plastic with 11 blades
Coolant pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . centrifugal vane--type
Engine speed/coolant pump speed ratio . . . . . . . . . . . . . . . . . . .
Coolant thermometer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Temperature ranges corresponding to each section:
-- Initial blue section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
-- Middle green section (normal working conditions) . . . . . . . . .
-- Final red section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1:1.977
colored scale divided into 3 sections
104 to 140 °F (40° to 60 °C)
140 to 230 °F (60° to 110 °C)
230 to 248 °F (110° to 120 °C)
Temperature control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . via thermostat valve
-- initial opening . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177.0 ± 35.6 °F (81 ± 2 °C)
Timing system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . overhead valves operated by tappets, rods
and rocker arms via the camshaft located
in the engine block; the camshaft is driven
by the crankshaft using straight--tooth
gears
Intake:
-- start: before T.D.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10° ± 30′
-- end: after B.D.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10° ± 30′
Exhaust:
-- start: before B.D.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64°
-- end: after T.D.C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26°
Valve--rocker arm clearance (with engine cold):
-- intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01± 0.001 in (0.30 ± 0.05 mm)
-- exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.02 ± 0.001in (0.55 ± 0.05 mm)
For further timing system technical data . . . . . . . . . . . . . . . . . . . see page 9
(continued)

(cont)
4 Cylinders
Fuel system
Air cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . dual cartridge dry air filter, with clogged
filter indicator with centrifugal pre--filter and
automatic dust ejector
Fuel pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . with double diaphragm
Fuel filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . through wire filter in fuel supply pump, and
replaceable cartridge on delivery line to
injection pump
Minimum fuel flow rate with pump shaft rotating at 1800 rpm . . 33.7 g/h (127.6 l/h)
Cam operated . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . engine timing
BOSCH injection pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . rotating distributor type
All--speed governor, incorporated in pump:
BOSCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . centrifugal counterweights
Automatic advance regulator, incorporated in pump:
BOSCH . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . hydraulic
For further fuel system technical data:
Fixed advance (pump setting for start of delivery before TDC)
-- Pressure setting -- Injection order, and other information re-
garding the BOSCH pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . refer to the data for the relevant
engine type in the table on page 3

DESCRIPTION AND OPERATION
SECTIONAL VIEWS
MIF1096A
1
View of JX1080U of 60 kW (80 HP)

MIF1097A
model JX1090U
2
View of JX1090U tractor engines of 67 kW (90 HP) and JX1100U of 73.5 kW (98 HP)

MIF1098A
Oil path under pressure
Oil return path under gravity
3
Lubrication diagram for engines mod. JX1090U and JX1100U
The pressurized lubrication system contains the fol-
lowing components:
-- oil pump, housed at the front of the crankcase,
driven by the grooved bushing keyed onto the
shank of the crankshaft;
-- water / oil cooler, housed in the crankcase;
-- pressure regulator incorporated in the cooler as-
sembly;
-- by--pass valve to cut off clogged oil filter, incorpo-
rated in the cooler assembly;
-- cartridge oil filter.
NOTE: Engines on JX1080U models are naturally as-
pirated, therefore will not contain a turbocharger lu-
brication circuit.

MIF1099A
Coolant recirculating in the engine
Coolant entering the pump
4
Cooling system diagram
The pressurized, closed--circuit engine cooling sys-
tem contains the following components:
-- lubricating oil cooler;
-- centrifugal coolant pump housed at the front of
the crankcase;
-- thermostat valve to govern coolant circulation.

MIF1100A
5
Detail of cylinder head with valve seats installed in engine model JX1080U
1. Exhaust manifold
2. Intake manifold
3. Air heater
4. Valve seats
5. Thermostat valve
6. Injector

MIF1101A
6
Detail of cylinder head with valve seats installed in engine models JX1090U and JX1100U
1. Exhaust manifold
2. Intake manifold
3. Air heater
4. Valve seats
5. Thermostat valve
6. Injector

MIF1102A
7
Detail of Counterweights and Balancer
1. Retaining bolts
2. Support
3. Retaining bolts
4. Gear
5. Balancing weight
6. Half bearings
7. Counter--shaft
8. Gear
9. Ring
10. O--Ring

OVERHAUL
Op. 10 001 10
ENGINE
Removal
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.
NOTE: Certain steps described in the removal --
installation of the engine are specific to models with
MFD or models with cab.
1. Remove the hood (1) as described in operation
9010022.
2. Disconnect the battery negative lead.
3. Drain the oil from the transmission--gearbox
housing.
8
4. Remove the three retaining bolts (1) and the
guard (2) on the right--hand side of the fan.
9
5. Disconnect the return hose fitting (1) from the cab
heater radiator connected, located on the under-
side of the coolant pump (2), and drain off the en-
gine coolant into a suitable container.
10

6. Remove the catch (2) and detach the toolbox (1).
11
7. Remove the split pins, retaining pin (3) and front
ballast (2) together with the support (1).
12
8. On MFD model, remove the center and rear re-
taining bolts of the front drive shaft guard, and re-
move the guard (1).
25038
1
13
9. On MFD models, remove the circlip (2) and move
the front sleeve (1) in the direction indicated by
the arrow, until clearing the groove on the front
axle.
25039
1 2
14

10. On MFD models, remove the circlip (2) and move
the rear sleeve (1) in the direction indicated by the
arrow until it is released from the groove on the
drive.
25040
1
2
15
11. On MFD models, remove the drive shaft central
support (1) retaining bolts and extract the shaft
together with the support.
1
25041
16
12. Remove the lift pump supply pipe retaining bolts
(1) and remove pipe (2).
17
13. Remove the power steering/MFD return pipe fit-
ting (1) on the left-hand side of the engine.
18

14. Detach the power steering/MFD return pipe on
the right--hand side of the engine.
19
15. Remove the bolt (1) retaining the bracket and the
power steering/MFD return pipe on the right--
hand side of the engine (2).
20
16. Remove the transmission--to--hydraulic pump oil
supply pipe (1) with clamps (2).
21
17. Remove the steering pump oil supply pipe fitting
(1) located on the right-hand side of the engine.
22

18. Remove the retaining bolts (2) that secure the lift
pump supply pipe (1) to the lift pump.
23
19. Extract the plastic fasteners (2) and detach the
diesel recovery pipe (3) and delivery pipe (4) to
the diesel pump (1).
24
20. On models with cab, disconnect the electrical
connections (1) and (2) between the cab and the
engine.
25
21. On models with cab, disconnect the electrical
connection (1) between the cab and the engine.
26

22. Disconnect the two power steering oil delivery
and return hoses (1).
1
24879
27
23. Remove the four knobs (1) and take off the two
right-- and left--hand control panel guards (2).
MDD2562A
1 2
28
24. On models with a mechanical differential lock, re-
move the differential lock pedal retaining pin from
the drive shaft (1), and remove the pedal and foot-
board (2).
25043
1
2
29
25. Remove the four plugs (1) to gain access to the
engine upper retaining bolts.
30

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26. Remove the retaining clips (1) and detach the
flexible cables governing the hand throttle (5) and
pedal throttle (4).
27. Remove the retaining clip (3) and detach the
throttle control tie--rod (2) connected to the injec-
tion pump.
31
28. Detach the fitting (2) and the hose (1) delivering
power steering oil to the hydraulic steering
cylinders.
32
29. On models with cab, detach the clamp (1) and the
cab heater delivery pipe (2).
33
30. On models with cab, detach the clamp (2) and the
cab heater return pipe (1).
34

31. Take out the three exhaust muffler rear retaining
bolts (1).
35
32. Remove the clamp (1), the air filter dust ejector
pipe (2) and the four nuts (3) securing the muf-
fler to the exhaust manifold.
36
33. Remove the muffler (2) together with the exhaust
pipe (1).
37
34. Remove the four rear retaining bolts (1) of the
hood support (2).
38

35. Remove the three front retaining bolts (1) of the
hood support (2).
39
36. Remove the two clips (2) retaining the brake fluid
reservoir (1) to the support (3).
40
37. Remove the two retaining bolts (1) and the sup-
port (2) together with the relays (3).
41
38. Remove the two retaining bolts (1) and the sup-
port together with the fuse box (2).
42

39. Remove the hood support (1).
43
40. On models with cab, remove the two retaining
bolts (2) and detach the support (3) together with
the dryer filter (1) and pipes.
1
23
44
41. On models with cab, unhook the bottom pin (1) re-
taining the condenser.
45
42. On models with cab, turn the steering wheel fully
to the right, then remove the two retaining bolts
(1) and the top guide of the condenser (2).
46

43. On models with cab, extract the condenser radia-
tor (1) from the right--hand side of the tractor.
47
44. On models with cab, remove the compressor (1)
as described in operation 50.200.26 without de-
taching pipes (2) and (3) to prevent recovery,
evacuation and charging of the gas in the air con-
ditioning system.
48
45. On models with cab, remove the condenser ra-
diator (1), the dryer filter (2) with its support and
the compressor (3), resting them alongside the
right--hand rear wheel with the associated piping.
49
46. Remove the two retaining bolts (1) and the brake
piping support (2).
50

47. Remove the retaining bolt (1) of the bracket of the
power steering return pipe (2).
51
48. Remove the electrical connections (1) connected
to the pressure switch (2) and free the power
steering pipe (3) from the engine.
52
49. Remove the electrical connections (2) from the
brake fluid reservoir (1).
53
50. Remove the electrical connections (2) installed
on the brake pumps (1).
54

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