Komatsu shop manual SM094 pulls apart four M-3 electric forklift trucks, from the FB15 to the FB20, and rebuilds them over 150 pages of factory procedure. If you've been hunting a Komatsu FB15–FB20 series shop manual PDF that actually explains the AC drive, this is it: electronics and diagnostics fill more than a third of the book, tracing the Canion master controller circuit, CAN bus communications, and the full machine wiring diagram before working through the error handling table and flowcharts for codes 05 and 07. The hydraulic circuit, transfer, steering gear box, and mast sections carry teardown and inspection data for each assembly. Set brake master cylinder piston clearance at 0.02 to 0.105 mm, and shim the load rollers to 1.5 mm of side play at the tightest point. Swap a healthy contactor on a hunch and you pay twice: the part, then the same fault. Bookmarked and text-searchable, this PDF goes wherever your truck quits.
What's Inside This Komatsu FB15M-3, FB18M-3, FB18MG-3, FB20M-3 Manual
| System | Pages | Key Topics |
|---|
| General and Specifications | 6-13 | Overall Dimensions and Specifications (Mast Data, Fb15M-3, Fb18M-3, Fb18Mg-3, Fb20M-3), Truck Data |
| Removal and Installation | 14-28 | Weight Table, Frame, Power Train, Brake System, Hydraulic System (Pedal, Accelerator Pedal, Brake Pedal, Parking Brake) |
| Disassembly and Assembly | 29-61 | Transfer (Disassembly, Assembly, Precautions When Assembling), Rear Axle (Power Steering Cylinder, Brake System |
| Electronics and Diagnostics | 62-116 | Specification (Traction Control System, Main Specifications of Motors and Service Data) |
| Masts | 117-150 | Installation Instructions, Service |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| All Models |
| Clearance between cylinder and piston | 0.02 - 0.105 mm | p. 41 |
| Load roller side to side clearance | 1/16 in. (1.5 mm) | p. 131 |
| Top side thrust roller capscrew torque | 70-80 ft.-lbs. (95-110 Nm) | p. 139 |
| 30D/35D/40D |
| Main Lift Cylinder Relief Pressure | 2000 psi | p. 121 |
| 50D/55D/60D |
| Main Lift Cylinder Relief Pressure | 2600 psi | p. 121 |
