This is the operator's manual for the Fiat 110-90 and 110-90 DT tractors, publication 06910280, written in English. It covers the two wheel drive 110-90 and the four wheel drive 110-90 DT, both powered by the 5861 cc six cylinder diesel rated at 80.9 kW (110 HP), with CAV or Bosch injection.Using its 103 pages, owners and mechanics can identify every control and instrument, follow correct starting and stopping, run the transmission and splitter, operate the Lift-O-Matic hydraulic lift and remote valves, and attach implements. It also covers the maintenance schedule, fluid and filter changes, fuel and brake bleeding, plus the electrical system with wiring diagram and fuses.Dedicated sections detail the 110-90 DT four wheel drive, the 20-speed and No-Spin versions, and the Comfort, SuperComfort and air conditioned cabs. It is delivered as a downloadable PDF you can view on any device or print.
What's Inside This Fiat 110-90, 110-90 DT Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Controls and Instruments | 17-21 | Master Clutch Lever, Parking Brake Lever, Throttle Lever, Differential Lock Pedal, Accelerator Pedal, Brake Pedals, Steering Adjustment Knob or Lever, Instrument Panel |
| Operation | 22-50 | Starting and Stopping, Transmission and Splitter, Power Take-Off, Hydraulic Lift, Remote Control Valves, Quick-Connect Implement Attachment |
| Maintenance | 51-57 | Adjustments, Fluid Change, Filter Change, Fuel System Bleeding, Brake System Bleeding, Cooling System |
| Electrical System | 58-60 | Battery, Starting Engine with Fiat Battery or Without Battery, Charging System, Wiring Diagram, Fuses, Headlamp Alignement |
| Specifications | 61-67 | Engine Type, Fuel System, Power Train, Transmission, Wheels and Tires, Electrical System |
| 110-90 Dt Four-Wheel Drive Version and Specifications | 68-71 | Live Front Axle, Weight Ratings - Standard Tires, Front Wheels, Track Widths, Steering, Turning Radius, Front Wheel Drive Operation, Four Wheel Drive Control |
| Speed Version | 72 | Speeds, At Full Load Engine RPM, Transmission and Creeper Lever Positions (Low Range, Normal Range, High Range, Reverse) |
| No-Spin Version | 73-75 | Description and Key Functions (Permits: Full Use of Tractor Pull, Smaller Turning Circles) |
| Heated and Ventilated Comfort Cab Version | 76-81 | Doors, Back Light, Side Windows, Windshield Washer, Windshield Wiper, Cab Interior Lamp, Sun Blind, Ventilation |
| Heated and Ventilated SuperComfort Cab Version | 82-89 | Doors, Back Light, Windshield Washer, Sun Blind, Windshield Wipers, Side Windows, Ashtray, Cab Interior Light |
| Air Conditioned Supercomfort Cab | 90-101 | Controls, Operation, Wiring Diagram, Periodical Inspections, Maintenance, Specifications |
| Supplement to the Operator's Manual for Models: 110-90 and 110-90 Dt | 102-103 | Running-In, Flexible Maintenance, Air Cleaner, Coolant Expansion Tank, Fuel Filter, Steering Fluid Reservoir, Windshield Washer Reservoir, Dry Air Cleaner |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Master clutch pedal free travel | 170 mm or 6 3/4 in | p. 51 |
| Parking brake grip free travel | 3 clicks | p. 51 |
| Live front axle final drives type | Planetary | p. 68 |
| Maximum lower link stroke (lifting rods at B) | 720 mm or 28 in | p. 34 |
| Maximum lower link stroke (lifting rods at C) | 645 mm or 25 in | p. 34 |
| Hydraulic pump output pressure | 185 bar (190 kg/cm² or 2,698 psi) | p. 64 |
| Engine valves. Clearance (Inlet) | 0.25 mm | p. 49 |
| Engine valves. Clearance (Exhaust) | 0.35 mm | p. 49 |
| Fuel injectors. Release pressure | 230 to 238 bar | p. 49 |
| Battery Capacity | 132 Ah | p. 56 |
| No. of cylinders | 6 | p. 60 |
| Displacement | 5861 cc | p. 60 |
Fiat 110-90, 110-90 DT Common Problems This Manual Covers
Front wheel binds on the DT
On the 110-90 DT, a front wheel that momentarily locks or feels like the front axle is binding usually traces to the planetary gears in the wheel hubs. The four wheel drive version section covers the live front axle and its final drives.
Manual Section: 110-90 DT Four-Wheel Drive Version and Specifications p. 68Clutch becomes unreliable
A clutch that will not transmit power smoothly or fails to release is a common wear complaint on these tractors. The maintenance section covers master clutch pedal free travel and the adjustments needed to restore proper operation.
Manual Section: Maintenance p. 51Weak or slow hydraulic lift
Slow lifting or low apparent lift capacity often comes from low fluid, a worn pump, or incorrect lift settings. The operation section details the Lift-O-Matic control, hydraulic lift controls and remote control valves.
Manual Section: Operation p. 22Battery and charging faults
Weak cranking or a battery that will not hold charge points to the battery, charging circuit or a blown fuse. The electrical system section covers the 132 Ah battery, the charging system, fuses and how to start with or without the battery.
Manual Section: Electrical System p. 58Hard starting and air in fuel
Hard starting after running low on fuel or after filter work usually means air has entered the injection system. The maintenance section covers fuel system bleeding to clear the lines and restore reliable starting.
Manual Section: Maintenance p. 51PTO engagement problems
A power take off that will not engage cleanly or drops out is a familiar issue on working tractors. The operation section covers the PTO control knob and clutch lever so you can check engagement and safe use.
Manual Section: Operation p. 22Frequently Asked Questions
Which Fiat models does this manual cover?
It covers the Fiat 110-90 and the four wheel drive 110-90 DT, both with the 5861 cc six cylinder diesel rated at 110 HP. It is publication 06910280 and also documents the 20-speed, No-Spin and cab versions.
Where are the engine and clearance specifications?
The specifications section lists the engine, fuel system, power train, transmission, wheel and tire, and electrical data, including valve clearances and injector release pressure, so you can service to Fiat figures. p. 61
Does it include a wiring diagram?
Yes. The electrical system section contains the wiring diagram along with the fuses, charging system and headlamp alignment details. p. 58
How is the 110-90 DT four wheel drive covered?
A dedicated section covers the 110-90 DT live front axle, weight ratings, track widths, turning radius, and front wheel drive and four wheel drive operation. p. 68
What do I get after purchasing this Fiat 110-90, 110-90 DT manual?
Instant PDF download. You get the full 103-page searchable Operator Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Is this Fiat 110-90, 110-90 DT Operator Manual printable?
The PDF is DRM-free. Print whatever sections you need to take out to the shop. Standard letter or A4 paper works.
Can I find wiring schematics in this Fiat 110-90, 110-90 DT manual?
Included. The Fiat 110-90, 110-90 DT Operator Manual covers complete wiring harness diagrams, electrical circuits, and connector pinouts.
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