Caterpillar GP20 Forklift Service Manual (99719-34130)

A Cat GP20 is a counterbalanced gasoline/LPG truck for moving pallets from docks, storage aisles, and yard areas. When one is down during second shift, a warehouse maintenance tech or forklift shop reaches for the service manual to trace the fault, set components correctly, and return the truck to work. This set covers the GP20 model family and the workshop repairs around its chassis, hydraulics, wiring, drive system, mast, and engine service.

What this manual helps you do

• Trace electrical faults through wiring, switches, and starting circuits.
• Diagnose drive, brake, steering, hydraulic, and mast problems.
• Follow removal, inspection, adjustment, and reassembly procedures.
• Rebuild or replace service components on the power train and hydraulic system.
• Verify service data while checking a truck after repair.

Who this is for

This suits a warehouse maintenance tech, dealer technician, independent forklift repair shop, plant mechanic, or rental fleet mechanic working on Cat GP trucks. It is a workshop service reference, while the companion operator handbook is also available for daily operation and controls.

FAQ

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

A: You receive 48 PDF files covering four Cat publications, with 245 pages total, split by section. The files carry a real text layer, so you can search and copy text, then print or zoom the relevant repair material at the bench.

Q: Will it fit my Cat GP20?

A: Yes. GP20 falls within the manual's listed GP15-35 model coverage, with related GP, GPL, and GC models also identified on the cover. Match the truck data plate to the model before starting work.

Q: How does it fit the job I am doing?

A: This is the workshop-level repair set for fault tracing, adjustments, component removal, and service checks. The bundled publications include the chassis material plus matching engine information and supplements.

It gives your shop a practical reference for pulling a GP20 out of the aisle, fixing the fault, and getting it back before the next work wave.

Models covered by this manual

Caterpillar publication 99719-34130 is the factory service manual for the GP20. The same publication covers 11 further forklift models: GP15, GP15 MC, GP18, GP18 MC, 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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