Mitsubishi FD55NB Forklift Service Manual (99739-5B110)

This FD55NB is a straight-up diesel counterbalanced yard and dock truck, the kind you're dragging out of a door when shipping is stacked up. The service manual is what you grab when the truck is down and you actually have to fix something, not just reset a code. Around my shop, this is what's open when we're chasing hydraulic issues, engine problems, or a mystery in the wiring at 2nd shift.

What this manual helps you do

• Diagnose hard-start, low-power, or smoking issues on the diesel engine and check related fuel and cooling systems
• Trace electrical faults with readable wiring diagrams and follow step-by-step checks on sensors, switches, and harnesses
• Rebuild or replace power train components, including differential, drive axle, and powershift transmission assemblies
• Adjust and pressure-test the hydraulic system, then set mast, tilt, and side-shift functions back to spec after component work
• Troubleshoot brake and steering problems, verify correct clearances and adjustments, and return the truck to safe operation

Who this is for

This manual is for in-house maintenance techs, dealer techs, independent forklift shops, and rental fleet mechanics keeping FD55NB trucks alive between shifts. If you're looking for how to drive the truck or do daily checks, you want the operator's handbook instead.

FAQ

Q: What format is it in, and can I search it?

A: It's a multi-file PDF set, split by section. The PDFs have a real text layer, so you can search and copy text, and the wiring diagrams are clear on-screen.

Q: Does it match my truck's serial number?

A: It's written for FD55NB trucks in the CF28E-80001-99999 serial range. If your plate is outside that, this may not match perfectly.

Q: Is this the right manual for actual repairs?

A: Yes. This is the workshop-level service manual, not parts and not operations, meant for teardown, diagnostics, and adjustment work.

Bottom line: If you're maintaining or repairing a Mitsubishi FD55NB in that serial range, this is the right manual. If you just need operating instructions, skip it.

Models covered by this manual

Mitsubishi publication 99739-5B110 is the factory service manual for the FD55NB, serial range CF28E-80001-99999. The same publication covers 9 further forklift models: FD40NB, FD45NB, FD50CNB, FD50NB, FG40N, FG45N, FG50CN, FG50N, FG55N. Check the model and serial number on your data plate before ordering.

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