![Fiat 55-90 60-90 70-90 Repair Manual [Tractor]](https://youfixthis.com/wp-content/uploads/2013/10/YouFixThis_Traktor_Screen_2_S-300x300.jpg)
This 377-page Fiat Workshop Manual puts the complete factory rebuild data for these tractors in your hands, and yes, that includes the tractor you're standing in front of right now. Inside you get full wiring diagrams for the electrical system, hydraulic lift schematics covering the whole 276-336 page range of lift unit procedures, plus torque tables, clearance charts, and calibration values pulled straight from Fiat engineering. Set piston ring end gaps and injector pump timing to the exact factory clearances, not a shop-floor guess written on a napkin. No more cross-referencing three different aftermarket booklets that half-guess the Power Train specs. This PDF carries a searchable text layer and full bookmarks, so you jump straight from the Engine section to the Front Wheel Drive procedures without scrolling through 300 pages you don't need. Pull it up on a phone in the barn and get the tractor running right.
What's Inside This Fiat 55-90 to 100-90 Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine | 32-111 | Engine Removal and Refitting, Cylinder Head, Timing, Fuel Injection Pump, Lubrication, Cooling System |
| Power Train | 112-229 | Clutch, Gearbox, Range Transmission, Rear Axle, Brakes, Differential Lock, Power Take-Off |
| Front Axle-Steering | 230-247 | Front Axle, Power Steering Unit, Steering Cylinder, Toe-In Adjustment |
| Front Wheel Drive | 248-275 | Front Wheel Drive Axle, Differential, Final Drive, Engagement Clutch |
| Hydraulic Lift Unit | 276-336 | Lift Cylinder, Control Valve, Draft Control, Lift Linkage, Hydraulic Pump |
| Electrical System | 337-371 | Wiring Diagrams, Charging System, Starting System, Lighting, Instruments |
| Service Tools | 372-377 | Special Service Tools, Recommended Workshop Equipment |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Sump oil capacity | 6.7 L | p. 29 |
| Engine Compression (Normal) | 25.5 to 27.5 bar | p. 73 |
| Cylinder Head Capscrew Torque | 60 Nm + 90°+90° | p. 52 |
| Oil Pump Relief Valve Crack-off Setting | 3.5 bar | p. 39 |
| Thermostat Opening Temperature | 79±2°C | p. 40 |
| Transmission Clutch Control Sleeve Working Clearance | 0.050 to 0.151 mm | p. 112 |
| Master Cylinder Operating Pressure (Brakes) | 17.6 bar | p. 120 |
| Front Axle Carrier to Engine Capscrew Torque | 314 Nm | p. 229 |
| Bevel Drive Backlash (Front Wheel Drive) | 0.15 to 0.20 mm | p. 248 |
| Lift Cylinder Capscrew Torque | 157 Nm | p. 283 |
| Alternator Rated Voltage | 14 Volts | p. 336 |
Fiat 55-90 to 100-90 Common Problems This Manual Covers
Fiat engine loses power, hard starting and rough running at low idle
Run the compression test procedure across all cylinders and compare readings against the factory chart. Cylinders reading well below spec or within a few psi of a neighboring cylinder point to worn rings, scored sleeves, or a leaking head gasket. Pull the head, inspect the gasket surface, and reseat with a new gasket before retesting.
Manual Section: EngineAir keeps entering the fuel system, tractor stalls or won't start after sitting overnight
Loosen the injector pump bleed screw and crank until fuel runs solid with no bubbles, then move to each injector line fitting and repeat. Check every fuel line and filter housing for a cracked seal or loose banjo bolt, since a pinhole leak on the suction side draws air back in as soon as the engine shuts off. Retorque fittings and bleed again before restarting.
Manual Section: EngineFiat 90-Series hydraulic lift raises slowly or will not lift the implement under load
Work through the hydraulic lift troubleshooting chart on page 282. Test the hydraulic pump delivery and the relief-valve setting, then inspect the lift control valve and the draft-control linkage for wear. The Hydraulic Lift Unit section gives the pressure specifications and the full control-valve and cylinder overhaul procedure before you condemn the pump.
Manual Section: Hydraulic Lift Unit p. 282Frequently Asked Questions
What are the torque specifications for the main bearing cap screws on a FIAT engine?
For the main bearing cap screws (C2) on a FIAT engine, the angular tightening torque is 80 Nm (8.2 kg-m, 59 ft. lb) at an angle of 90°. If the screws are to be reused, check that their diameter 'd' does not exceed 13.5 mm or 0.5315 in, otherwise they should be scrapped.
What is the torque specification for the flywheel bolts on a FIAT engine?
The flywheel capscrews (C4) on a FIAT engine require an angular tightening torque of 40 Nm (4.1 kg-m, 29 ft. lb) at an angle of 60°. Before reusing these screws, verify that their diameter 'd' does not exceed 11.5 mm or 0.4527 in, replacing them if they do.
What is the recommended engine oil capacity for a FIAT tractor?
For a FIAT tractor, the total capacity for sump and filter oil is 11.7 dm³ (litres) or 2 1/2 gallons, weighing 10.5 kg. The sump oil capacity alone is 10.5 dm³ (litres) or 2 1/3 gallons, weighing 9.5 kg.
What is the specified valve clearance for timing check on a FIAT engine?
For a FIAT engine, the valve clearance for timing check is 0.25 mm (0.010 in) for the inlet valves and 0.35 mm (0.014 in) for the exhaust valves.
How will I receive this Fiat WORKSHOP MANUAL?
This is a 377-page searchable PDF ready for immediate download. Works on any device, so pull it up on your phone while you're under the hood. No shipping, no waiting.
Can I print this Fiat manual?
Yes, print as many copies as you want, and there are no restrictions. Many mechanics print the section they need and bring it to the shop floor.
Does this Fiat WORKSHOP MANUAL have electrical diagrams?
Yes. You'll find full electrical schematics with wire routing diagrams, connector identification, and circuit descriptions.
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