Common Curtis controller fault codes sit in the electrical section of this Hyster J2.5UT service manual PDF, a 94-page reference (OEM ID 8000 SRM 2353) for five J UT series battery forklift trucks, J1.5UT through J3.5UT. A wiring diagram lays out the electrical system around the AC motor controller, while hydraulic schematics trace oil flow through the gear pump, multi-way valve, full hydraulic orbitrol and speed limit valve. Fault diagnosis sections follow the gear pump, multi-way valve, steering system and brakes, and the lifting chapter takes in mast installation and disassembly, fork carriage height adjustment and lift and tilt cylinder work. Your J2.0UT or J2.5UT runs a 600Ah standard battery; when setting wheel bearing preload, take the slot nut to 206 to 235 N•m first, then finish at 9.8 N•m. Ordering seals or a microswitch? Check the List of Wear Parts. Bookmarked and text-searchable, the PDF lets you finish that preload adjustment to the book's own figures.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Forklift Truck Main Parts | 7-11 | Battery and Installation, Use of Battery |
| Main Technical Specification of Forklift Truck | 12-15 | Rated Capacity, Load Centre, Lifting Height, Mast Tilting Angle, Turning Radius, Travel Speed |
| Driving Motor and Driving System | 16-33 | Overview, Axle Box and Differential (Notes for Installation and Use, Front Tyre and Wheel Rim Models, Installation of Wheel Hub) |
| Electrical System | 34-53 | Overview, Common Curtis Fault Codes |
| Steering Device and Installation | 54 | Overview (Steering System: After Reassembly, Fault Diagnosis) |
| Steering Axle and Installation | 55 | Overview of Steering Axle (Essentials of Adjustment and Maintenance, Steering Wheel Bearing Preload Adjustment) |
| Parking Brake Operation | 56-64 | Overview (Operating Device of the Parking Brake) |
| Hydraulic Oil Tank and Installation | 65 | Overview, Hydraulic Oil Tank |
| Hydraulic System | 66-79 | Overview, Gear Pump (Maintenance of Gear Pump, Fault Diagnosis), Multi-Way Valve (Fault Diagnosis), Full Hydraulic Orbitrol, Speed Limit Valve, Hydraulic Pipeline |
| Lifting System | 80-90 | Safety Procedures When Working Near Mast, Overview, Inner and Outer Mast, Fork Carriage Assembly (Adjustment for Height of Fork Carriage), Roller Positions (Fork Backrest) |
| List of Wear Parts | 91-94 | Paper Cushion, Oil Seal, Seal Ring, Retainer Ring, O-Seal Ring, Microswitch |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Wheel bearing slot nut torque (initial) | 206 to 235 N•m (151.9 to 173.3 lbf ft) | p. 61 |
| Wheel bearing slot nut torque (final) | 9.8 N•m (7.2 lbf ft) | p. 61 |
| Pinion assembly nut tightening torque | 3.0 - 3.5 N·m | p. 23 |
| Wheel hub bearing grease amount | 130 to 190 ml | p. 23 |
| Wheel hub bearing installation torque | 10 - 30 N·m | p. 23 |
| Axle box screw plug tightening torque | 45 - 60 N·m | p. 23 |
| Wheel hub starting torque | 5 - 15 N·m | p. 23 |
| Steering wheel bearing preload adjustment torque (initial) | 206 to 235 N·m | p. 61 |
| Steering wheel bearing rotational torque | 2.94 ~ 7.8 N·m | p. 61 |
| J1.5UT |
| Battery Capacity (Standard) | 420Ah | p. 7 |
| J2.0UT, J2.5UT |
| Battery Capacity (Standard) | 600Ah | p. 7 |
| J3.0UT, J3.5UT |
| Battery Capacity (Standard) | 500Ah | p. 7 |
