A mast that creeps under load or a transmission that slips when hot can eat a week of shop time if you work from memory. The Clark CMP50, CMP60, CMP70 service manual PDF answers that with 411 pages of factory data for these diesel forklifts, organized by system from PM schedules to a closing specifications group. Perkins engine work fills over a third of the book and transmission troubleshooting another quarter, while the electrical group carries the circuit diagram. Hydraulic schematics lay out the pump and control valve circuits, backed by steering unit, priority valve, and lift cylinder overhauls. Hold lift cylinder drift to 20 mm per 5 minutes at 50°C oil, and set CMP50 main relief at 200 kg/cm² (2845 psi). Guess wrong and you buy a pump twice. With bookmarks and a text layer, you confirm the fault first, so the part you order is right the first time.
What's Inside This Manual
| System | Pages | Key Topics |
|---|
| Safe Maintenance | 4-14 | Safety, Lifting, Jacking, And Blocking |
| Periodic Service | 15-29 | Maintenance Schedules, Planned Maintenance, PM Inspection Form |
| Perkins Diesel Engine | 30-182 | General Information, Cylinder Head Assembly |
| Cooling System | 183-186 | Specifications and Description, Troubleshooting |
| Transmission | 187-294 | Disassembly, Reassembly of Transmission, Troubleshooting Guide for the Transmission |
| Electrical | 295-300 | Circuit Diagram, Instrument Pod |
| Drive Axle | 301-313 | Specifications and Description, Drive Axle Overhaul |
| Wheels and Tires | 314-326 | Specifications and Description, Cushion Wheels and Tires, Pneumatic Wheels and Tires |
| Brake System | 327-343 | Service/Inching Brake, Parking Brake |
| Steer System | 344-360 | Specifications and Description, Troubleshooting, Steering System Removals & Installations, Steering System Pressure Check, Steering Unit Overhaul, Priority Valve Overhaul |
| Hydraulic System | 361-378 | Specifications and Description, Troubleshooting, Hydraulic Pump Overhaul, Control Valve Overhaul |
| Uprights | 379-398 | Specifications and Description, Upright Checks and Adjustments, Lift Chain Service, Removals and Replacements, Lift and Tilt Cylinder Overhaul |
| Counterweight | 399-400 | Inspection, Removal and Replacement |
| Specifications | 401-411 | Dimensions and Weight, Performance, Service Specifications by Group, Fluids, Critical Torque, Standard Tightening Torque, Metric Conversion Chart |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Main Pump Displacement | 56.6 cc/rev (3.45 in³/rev) | p. 362 |
| Auxiliary Pump Displacement | 15.2 cc/rev (0.93 in³/rev) | p. 362 |
| Main Valve Relief Pressure | 200 kg/cm² (2845 psi) | p. 362 |
| Main Valve Relief Pressure (CMP 50) | 200 kg/cm² | p. 362 |
| Steer cylinder tie rod nut torque | 5.0 ± 0.5 kg·m (36 ± 4 lbf·ft) | p. 360 |
| Lift cylinder drift | 20 mm/5min | p. 404 |
| Transmission Oil Capacity | 20 L | p. 187 |
| Cooling System Capacity | 17 L | p. 184 |
| Steering Relief Pressure | 140 kgf/cm² | p. 345 |
| Steering Unit Displacement | 200 cc/rev | p. 345 |
