Caterpillar GP25NM Forklift Service Manual (99719-8M110)

On the shop floor, the Cat GP25NM is a counterbalanced gasoline/LPG truck used for loading, unloading, and moving pallets around a yard or warehouse. Rental fleet mechanics and forklift technicians reach for this manual when a truck needs scheduled service, fault diagnosis, adjustment, or repair before its next dispatch. It is the workshop reference for keeping this GP25NM working and getting it back out on time.

What this manual helps you do

• Trace electrical circuits, switches, relays, and wiring faults.
• Check and adjust the steering, brakes, drive system, and hydraulic functions.
• Follow removal and installation procedures for mast, forks, axles, and related truck assemblies.
• Diagnose operating faults using service data and troubleshooting procedures.
• Rebuild or replace hydraulic, power-train, and control components during in-house repairs.

Who this is for

This suits a rental fleet mechanic, warehouse maintenance tech, dealer technician, or independent forklift repair shop working on Cat GP25NM trucks. It fits the forklift repair trade, with the operator handbook and engine service manual available as companion volumes for daily operation and engine work.

FAQ

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

A: You receive 15 PDF files split by section, with 605 pages total. The files can be printed or viewed with zoom, and the set has a real text layer so you can search and copy text.

Q: Will it fit my GP25NM truck?

A: It covers GP25NM serial ranges AT34-30121-49999, AT34-80121-99999, AT35-30121-49999, AT36-30121-49999, AT13F-30121-49999, and AT13F-80121-99999. Match your truck's serial plate to those ranges before starting work.

Q: Is this the right kind of manual for shop repairs?

A: Yes. It is a service manual for repair procedures, scheduled maintenance, testing, adjustment, troubleshooting, and component replacement, rather than an operator's handbook.

For a covered GP25NM, this gives your shop the reference needed to diagnose faults, plan parts, and turn the truck around with fewer surprises.

Models covered by this manual

Caterpillar publication 99719-8M110 is the factory service manual for the GP25NM. The same publication covers 6 further forklift models: 2PD4000, 2PD5000, 2PD6000, 2PD6500, 2PD7000, GP30NM. The cover also lists 2P3000, 2P3500, 2PC4000, 2P4000, 2P5000, 2P5500, 2P6000, 2P6500, 2P7000, 2PD5500, GP15NM, AT34-T0100-T9999, GP18NM, AT34-W0100-W9999, GP20CNM, AT34-P0100-P9999. Check the model and serial number on your data plate before ordering.

Table of Contents:

• 99719-8M110 – Chassis & Mast Service Manual
  • Foreword
  • General Information
  • Cooling System
  • Power Train
  • Powershift Transmission
  • Front Axle and Reduction Differential
  • Rear Axle
  • Brake System
  • Steering System
  • Hydraulic System
  • Mast and Forks
  • Service Data
  • Electrical Schematics
  • Electrical System
  • Controllers

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