Caterpillar GC45K Forklift LPG Service Manual (99789-84122)

This Cat GC45K is a counterbalanced LPG forklift for moving pallet loads around a warehouse, yard, or plant floor. Yes, this manual fits gas fuel-system work on the listed GC-series trucks. It's for the maintenance tech, dealer technician, or shop mechanic trying to get a second-shift breakdown back into service. Caterpillar published it as an LPG supplement paired with the engine service manual.

What this manual helps you do

• Trace LPG fuel lines, tank connections, shutoff components, and related faults.
• Check and service the converter, regulator, and mixer.
• Follow removal, inspection, adjustment, and installation procedures for LPG components.
• Diagnose poor starting, fuel delivery faults, rough running, and loss of engine performance.
• Verify the gas system after repair before returning the truck to the aisle.

Who this is for

This suits warehouse maintenance techs, plant maintenance teams, dealer technicians, independent forklift repair shops, and rental fleet mechanics. It's the LPG fuel-system trade manual for in-house repair work, alongside the companion chassis manual, which is also available for the truck systems and structure.

FAQ

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

A: You receive a set of 6 Cat publications delivered as 82 PDF files, split by section, with 1,619 pages total. The files have a real text layer for searching and copying, and you can print or zoom them at the bench.

Q: Which trucks and serials does it cover?

A: It covers GC35K, GC40K, GC40K-STR, GC45K-SWB, GC45K, GC55K, GC55K-STR, GC60K, GC70K, GC70K-STR, and GC35K-GC70K. The GC45K serial coverage is AT88A-10231-up.

Q: How does it fit the repair job?

A: Use it when the fault is in the LPG fuel system, from the tank and lines through the converter, regulator, and mixer. It gives the workshop procedures needed to diagnose and service the gas side of the engine.

For the stated GC45K serial range and LPG fuel-system work, this is the manual set to keep the truck moving before the next wave.

Models covered by this manual

Caterpillar publication 99789-84122 is the factory lpg service manual for the GC45K, serial range AT88A-10231-up. The cover also lists GC35K, GC40K, GC40K-STR, GC45K-SWB, GC55K, GC55K-STR, GC60K, GC70K, GC70K-STR, GC35K-GC70K. Check the model and serial number on your data plate before ordering.

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