Caterpillar GP25ND Forklift Engine Service Manual (99789-87100)

A Cat GP25ND keeps pallets moving across the warehouse floor or yard, and this manual is for the engine work behind that uptime. Warehouse maintenance techs, dealer technicians, and independent forklift shops use it during breakdowns, scheduled repairs, and engine rebuilds. It gives the workshop procedures needed to test, adjust, strip, and rebuild the engine correctly.

What this manual helps you do

• Check engine specifications, operating systems, and service data before starting a repair.
• Trace engine faults through testing and adjusting procedures.
• Follow disassembly and assembly steps for engine components and related systems.
• Verify torque values, clearances, and adjustment requirements during reassembly.
• Diagnose and repair the engine end of a Cat GP25ND forklift.

Who this is for

This suits warehouse maintenance techs, plant maintenance teams, dealer technicians, rental fleet mechanics, and independent forklift repair shops. The engine end of the truck is covered here; chassis, mast, hydraulics, and truck systems are in the companion chassis manual, also available.

FAQ

Q: What do I receive, and how is it organised?

A: You receive 8 PDF files split by section, with 210 pages total. The files carry a real text layer, so you can search the manual and copy text while working from a screen or printed pages.

Q: Does it fit a GP25ND?

A: Yes. The cover identifies the GP15N-GP35N model group, which includes the GP25ND, along with the related K15, K21, K25, K15, and K21 applications. That makes it the engine manual for this truck family.

Q: How does it fit the repair job?

A: This is the engine book of the set, covering specifications, systems operation, testing, adjusting, disassembly, assembly, torque values, and clearances. It gives a mechanic the workshop reference needed to get a stopped truck back before the next shift.

For a GP25ND engine fault, teardown, adjustment, or rebuild, this is the manual to have at the bench or in the service truck.

Models covered by this manual

Caterpillar publication 99789-87100 is the factory engine service manual for the GP25ND. The same publication covers 17 further forklift models: GP15ND, GP15NM, GP15NT, GP18ND, GP18NM, GP18NT, GP20CND, GP20CNT, GP20ND, GP20NM, GP20NT, GP25NT and 5 more. The cover also lists K15,, K21,, K25, K15, K21, GP15N-GP35N,, GPE15N-GPE35N. Check the model and serial number on your data plate before ordering.

Table of Contents:

• 99789-87100
  • How To Use This Manual
  • Engine Maintenance
  • Precautions
  • Lubrication System
  • Engine Outside Drawings
  • Adjustment Value

Caterpillar Software

Caterpillar PDF Manuals