Caterpillar GP15 Forklift Service Manual (99719-34130)

This Cat GP15 is a counterbalanced lift truck for moving pallets and materials around a warehouse, plant, or yard. A plant maintenance tech, dealer technician, or independent forklift shop reaches for this manual when the truck needs fault-finding, adjustment, repair, or rebuilding. I've used books like this when the weekend repair window is short and the truck's history is incomplete.

What this manual helps you do

• Trace electrical circuits, switches, relays, and starting or charging faults.
• Diagnose power-train, transmission, brake, steering, and hydraulic problems.
• Follow removal, inspection, adjustment, and replacement procedures for truck systems.
• Rebuild serviceable hydraulic, axle, brake, steering, and engine-related assemblies.
• Verify service data, troubleshooting steps, and correct workshop checks.

Who this is for

This suits warehouse maintenance technicians, plant maintenance leads, dealer technicians, independent forklift repair shops, and rental fleet mechanics. It is workshop service documentation for the Cat forklift trade, with the operator handbook available as the companion volume for daily operation.

FAQ

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

A: You receive five Cat publications in 72 PDF files, split by section, with 352 pages total. The files can be printed and zoomed for bench work, and the set has a real text layer for searching and copying text.

Q: Which trucks does it fit?

A: The manual identifies 4G15, 4G63, 4G64, 6G72, GP15-35, GP15K-35K, GP40, GPL40, GC15-30, GC15K-30K, and GC35K-70K models. Match your truck's model marking to this list before starting work.

Q: How does it fit the repair job?

A: This is the service set for workshop repairs, covering the counterbalanced truck systems and the matching engine material supplied with it. It gives a mechanic the procedures and service data needed to work from diagnosis through repair.

For a matching Cat truck, this set gives your shop a practical repair reference for planned maintenance and breakdown work.

Models covered by this manual

Caterpillar publication 99719-34130 is the factory service manual for the GP15. The same publication covers 11 further forklift models: GP15 MC, GP18, GP18 MC, GP20, GP20 MC, GP25, GP25 MC, GP30, GP30 MC, GP35, GP35 MC. The cover also lists 4G15, 4G63, 4G64, 6G72, GP15-35,, GP15K-35K,, GP40,, GPL40,, GC15-30,, GC15K-30K,, GC35K-70K. Check the model and serial number on your data plate before ordering.

Table of Contents:

• Screw
• Secondary cover
• Screw
• Secondary seat lever
• Fulcrum pin
• Spring
• Converter body
• Primary valve seat
• Cover plate
• Spring
• Primary cover
• Screw
• Solenoid valves (electromagnetic valves)
• Switching from [LP-gas] to [gasoline]
• Switching from [gasoline] to [LP-gas]

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