Opening with a description of the forklift truck main parts, the 92-page Hyster H4.0UT service manual PDF (OEM ID 4313912) works through 12 UT-series forklift truck models, from the H4.0UT up to the H155UT. Electrical schematics lead into fault checks for the OPS/park brake alarm system and a truck that will not start. On the hydraulic side, schematics show the main oil circuit, with sections on the control valve, lift cylinder, speed limit valve and tilting cylinder, while the main oil pump gets full disassembly, assembly and test steps. Wheel brake rebuilds finish by testing the automatic clearance regulator. Change the engine oil filter every 600 hours or 3 months and the fuel filter at 2400 hours or 12 months. When you refit a drive wheel, the hub nuts take 510-760 N·m (114.65-170.85 lbf ft). Searchable text and bookmarks take you straight to those axle and filter pages, so both jobs get done to Hyster's own figures.
What's Inside This Hyster H4.0UT-H7.0UT6 (H80UT-H155UT) Manual
| System | Pages | Key Topics |
|---|
| Forklift Truck Main Parts | 5 | Power System, Drive Axle, Control System, Electrical System, Steering System, Lifting System |
| Forklift Main Technical Parameters | 6-10 | Main Technical Parameters |
| Power System | 11-18 | Engine System (Engine Overview, Inspection, Engine Adjustment) |
| Hydraulic Transmission Case and Torque Converter | 19-26 | Torque Converter, Oil Feed Pump, Hydraulic Transmission Case, Hydraulic Clutch, Control Valve, Inching Valve |
| Drive Axle | 27-34 | 4-5T, 5-7T |
| Steering System | 35-43 | Steering Axle |
| Brake System | 44-53 | Overview, Brake Master Cylinder, Wheel Brake, Automatic Clearance Regulator, Manual Brake, Brake Pedal |
| Hydraulic System | 54-68 | Main Pump, Control Valve and Bypass Valve, Hydraulic System Main Oil Circuit, Lift Cylinder, Speed Limit Valve, Tilting Cylinder |
| Troubleshoot Hydraulic System | 69-75 | Fluid Level, Gear Pump, Overflow Valve, Multi-Way Valve, Lift Cylinder |
| Electrical System | 76-86 | Overview, Electrical Box, Battery, Dash Display (Introduction to PDM), Electrical Schematics |
| Drive, Operation, and Routine Maintenance of Forklift Truck | 87-92 | Transporting the Forklift Truck, Towing, Long-Term Storage of Forklift Truck, Maintenance Procedures Prior to Operation, Cooling System, Oils Used for Forklift Truck |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Tightening Torque of Wheel Hub Nuts | 510-760 N·m | p. 34 |
| Fuel Filter Replacement Interval | 2400 hours or 12 months | p. 13 |
| Engine Oil Filter Replacement Interval | 600 hours or 3 months | p. 13 |
| Clean the oil filter (coarse strainer) Interval | 1000 hours | p. 19 |
| Replace the oil filter (fine filter) Interval | 250 hours | p. 19 |
| Air Filter Replacement Interval | 1200 hours or 6 months | p. 13 |
| Fuel Tank Capacity | 108 liter | p. 15 |
| Engine Oil Capacity | 17.5 liter | p. 12 |
| Engine Oil Filter Service Interval | 600 hours | p. 13 |
| Air Filter Service Interval | 1200 hours | p. 13 |
| H4.0UT, H4.5UT, H5.0UT |
| Wheel Nut Tightening Torque | 480-560 N·m | p. 27 |
| H5.0UT6, H6.0UT6, H7.0UT6 |
| Wheel Hub Nut Tightening Torque | 510-760 N·m | p. 34 |
