Caterpillar GP40KL Forklift Service, Operator and Schematic Manual (99739-36130)

A Cat GP40KL is a counterbalanced truck for moving pallets and loads around the warehouse, dock, or yard. When one is down during a second-shift breakdown, this is the kind of workshop manual a maintenance tech or forklift repair shop pulls out to get it back in service. It supports fault finding, adjustment, component repair, and planned maintenance across the truck. The set covers GP40K, DP40K, GP40KL, DP40KL, GP45K, DP45K, GP50K, DP50K, and TB45 models.

What this manual helps you do

• Trace electrical faults through wiring diagrams and schematics.
• Diagnose drive, transmission, brake, steering, hydraulic, and mast problems.
• Follow removal, inspection, repair, and reassembly procedures for truck assemblies.
• Adjust controls, brakes, steering, hydraulics, and mast components using the stated service data.
• Rebuild or replace engine, power-train, axle, and hydraulic components with the matching workshop references.

Who this is for

This suits warehouse maintenance techs, plant maintenance teams, dealer technicians, independent forklift shops, and rental fleet mechanics. It is written for the forklift repair trade, with the operator material and schematic information included; the companion chassis manual is also available for related workshop coverage.

FAQ

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

A: You receive seven separate Cat publications as 89 PDF files, split by section, with 2,389 pages total. The PDFs can be searched, copied from, printed, and zoomed; the main content is English, with French and German included.

Q: Does it match my truck?

A: The stated serial coverage is T29C-50001-up for GP40KL, and the set names the related GP, DP, and TB45 models above. That gives you a clear match point before you start work.

Q: How does it fit the job?

A: It is a service, operator, and schematic set for in-house repairs, troubleshooting, and component work. The engine manual is included alongside the truck publications, so the engine and chassis work can be handled from one set.

Use it to trace a fault, tear down a failed assembly, and return the truck to the aisle before the next wave.

Models covered by this manual

Caterpillar publication 99739-36130 is the factory service, operator and schematic manual for the GP40KL, serial range T29C-50001-up. The same publication covers 4 further forklift models: DP50K, GP40K, GP45K, GP50K. The cover also lists DP40K, DP40KL, DP45K, TB45. Check the model and serial number on your data plate before ordering.

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