A description of the forklift truck main parts opens this 102-page Hyster F1.8UT 4WD service manual PDF (OEM ID 4322486), written for five four-wheel-drive UT forklift trucks from the F1.8UT up to the F70UT. Electrical schematics map the electrical box and battery circuits, while hydraulic schematics trace the main oil circuit from the main pump and control valve out to the lift and tilt cylinders. Troubleshooting sections cover the wheel brake, the hydraulic system and the OPS/park brake alarm, and exploded views back up transmission teardown and drive axle adjustment. Replace your engine oil filter every 600 hours or 3 months, and change the transmission oil every 1000 hours. A truck that will not start has its own entry. Bookmarks for each system and a searchable text layer put Hyster's own intervals in front of you when that filter or transmission oil change comes due.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Forklift Truck Main Parts | 5 | Torque Converter, Speed Reducer, Speed Differential, Steering System |
| Forklift Main Technical Parameters | 6-8 | Main Technical Parameters |
| Power System | 9-15 | Engine System (Engine Overview, Inspection, Engine Adjustment) |
| Transmission | 16-34 | Overview |
| Drive Axle | 35-48 | Rear Steering Drive Axle (Outline Drawing, Structural Form and Characteristics, Outline Drawing and Sizes, Maintenance and Repair) |
| Steering System | 49-52 | Overview |
| Brake System | 53-63 | Overview (Brake Master Cylinder, Wheel Brake, Automatic Clearance Regulator) |
| Hydraulic System | 64-83 | Main Pump |
| Lifting System | 84-87 | Safety Procedures When Working Near Mast (Inside and Outside Masts, Bracket, Adjust) |
| Electrical System | 88-93 | Overview (Electrical Box, Battery, Electrical Schematics) |
| Drive, Operation, and Routine Maintenance of Forklift Truck | 94 | |
| Cooling System | 95-102 | Radiator, Coolant, Anti-Freeze Fluid, Radiator Cap, Sediment |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Fuel Filter replacement interval | 2400 hours or 12 months | p. 11 |
| Engine Oil Filter replacement interval | 600 hours or 3 months | p. 11 |
| Air Filter replacement interval | 1200 hours or 6 months | p. 11 |
| Transmission oil change interval | 1000 hours | p. 17 |
| Fuel Tank Capacity | 108 liter | p. 13 |
| Main oil pressure of gearbox | 1.1 - 1.4 MPa | p. 17 |
| Torque converter oil inlet pressure | 0.4 - 0.6 MPa | p. 17 |
| Fastening bolt of rear main reduction box assembly (5) torque | 180-220 N·m | p. 39 |
| Fastening bolt of front main reduction box assembly (1) torque | 180-220 N·m | p. 48 |
| Brake clearance | 0.25-0.4 mm | p. 51 |
| Brake Master Cylinder Diameter | 19.05 mm | p. 57 |
| Wheel Cylinder Diameter | 28.58 mm | p. 57 |
