Mitsubishi FD135NM1 Forklift Service Manual (99799-77100)

This FD135NM1 is a big diesel counterbalance truck, the kind that lives in yards, mills, and heavy plants doing long, hard pushes. The people who reach for this service manual are the ones actually turning wrenches: plant maintenance, rental techs, independent shops like mine. They're trying to get hard data and real procedures so they can stop guessing, fix the fault, and get the machine back earning money.

What this manual helps you do

• Diagnose hydraulic issues, check pressures, and trace leaks on mast, tilt, and auxiliary circuits
• Trace, test, and repair electrical and charging problems using wiring diagrams and connector callouts
• Follow step-by-step teardown and reassembly on the diesel engine, power train, and powershift transmission
• Rebuild or replace steer axle, drive axle, and brake components with the right sequences and specs
• Troubleshoot fault symptoms with logical flow, then set and verify adjustments after the repair

Who this is for

This is aimed at shop and field techs who already know their way around forklifts: warehouse maintenance, dealer techs, independent repair shops, and rental fleets. If you just need to learn how to drive or do daily checks, you want the operator's handbook, not this manual.

FAQ

Q: What format is it in, and can I search it and read wiring diagrams clearly?

A: It's a set of 45 PDF files with a real text layer, so you can search and copy text. Wiring diagrams are in PDF too, so you can zoom in on symbols and wire numbers.

Q: Will it cover my truck's serial number?

A: It's written for FD135NM1 trucks in the AF15E-20011-39999 serial range. If your plate sits in there, this is the right book.

Q: Is this the right document if I'm planning an engine or transmission rebuild?

A: Yes, this is the workshop-level service manual, meant exactly for full repairs and adjustments, not parts lookup or basic operation.

Bottom line: If you've got an FD135NM1 in that serial range and you're the one fixing it, this is the manual you want. If you're after parts lists or driving tips, skip it.

Models covered by this manual

Mitsubishi publication 99799-77100 is the factory service manual for the FD135NM1, serial range AF15E-20011-39999. The same publication covers 3 further forklift models: FD100NM1, FD120NM1, FD150ANM1. Check the model and serial number on your data plate before ordering.

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