Caterpillar GP15NT Forklift Engine Service Manual (99789-87100)

A Cat GP15NT spends its day moving pallets, loading trucks, and keeping warehouse production moving. When one comes back to the yard with an engine fault, unusual noise, or a missed service interval, the mechanic needs workshop procedures rather than an operator's handbook. This is the engine book of the set for K15, K21, K25, GP15N-GP35N, and GPE15N-GPE35N trucks.

What this manual helps you do

• Check engine specifications, system operation, and scheduled service requirements.
• Trace faults through testing and adjusting procedures.
• Follow disassembly and assembly steps for engine components.
• Set adjustments using the listed torque values and clearances.
• Verify repairs before returning the truck to work.

Who this is for

This suits a rental fleet mechanic, warehouse maintenance tech, plant maintenance team, dealer technician, or independent forklift shop handling engine service in-house. The chassis, mast, hydraulics, and truck systems are covered in the companion chassis manual, also available. Around my shop, this is the book pulled out when the engine has to be repaired correctly and the truck is due back on the floor.

FAQ

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

A: You receive 8 PDF files split by section, totaling 210 pages. The set has a real text layer, so you can search it, copy text, print pages, and zoom in during workshop use.

Q: Which trucks does it fit?

A: It is matched to the K15, K21, K25, GP15N-GP35N, and GPE15N-GPE35N model coverage shown for this publication. That gives you the engine service reference for this Cat truck family.

Q: How does it fit the job I'm doing?

A: Use it for engine specifications, system testing, adjustments, teardown, rebuilding, torque values, and clearances. It gives a shop the information needed to diagnose, repair, and return the truck to service.

For engine work on these Cat models, this is the manual to have beside the bench or service cart.

Models covered by this manual

Caterpillar publication 99789-87100 is the factory engine service manual for the GP15NT. The same publication covers 17 further forklift models: GP15ND, GP15NM, GP18ND, GP18NM, GP18NT, GP20CND, GP20CNT, GP20ND, GP20NM, GP20NT, GP25ND, 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

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