Caterpillar GC20K HP Forklift LPG Service Manual (99719-80150)

This manual fits the Cat GC20K HP, a counterbalanced LPG forklift used to move pallets around a warehouse, plant, or yard. I'd reach for it when a gas truck has a fuel-system fault, starting problem, rough running, or needs workshop repair. It is the LPG supplement paired with the engine service manual, and the download bundles four Cat publications, so you receive the set rather than one booklet.

What this manual helps you do

• Trace LPG fuel lines, tank connections, shutoff components, and related fittings.
• Check the converter and regulator during fuel-system service.
• Diagnose mixer operation, fuel delivery, starting, idle, and running complaints.
• Follow removal, installation, adjustment, and service procedures for LPG components.
• Verify system operation after repair and use the included service data for workshop checks.

Who this is for

This suits a warehouse maintenance tech, plant mechanic, rental fleet mechanic, dealer technician, or independent forklift repair shop doing LPG fuel-system work. The trade is forklift repair, not operator training. The companion chassis manual, covering the truck systems, mast, hydraulics, and running gear, is also available.

FAQ

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

A: You receive 57 PDF files split by section, with 656 pages total, covering four Cat publications. The files can be searched, copied from, printed, and zoomed for shop use.

Q: Which trucks and serials does it fit?

A: It covers GC15K, GC25K, GC18K, GC25K HP, GC20K, GC30K, GC20K HP, and 4G63/4G64. For GC20K HP, the printed coverage is AT82C-90011-up / AT82D-90011-up / AT82E-90011-up.

Q: How does it fit the repair job?

A: If your job is LPG fuel-system diagnosis or repair on one of those Cat trucks, this is the manual to use. It gives the workshop reference for the gas side of the engine work.

For the listed Cat models and serials, the answer is yes. You can use this set to diagnose and service the LPG system at shop level.

Models covered by this manual

Caterpillar publication 99719-80150 is the factory lpg service manual for the GC20K HP, serial range AT82C-90011-up / AT82D-90011-up / AT82E-90011-up. The same publication covers 4 further forklift models: GC20K, GC25K, GC25K HP, GC30K. The cover also lists GC15K, GC18K, 4G63/4G64. Check the model and serial number on your data plate before ordering.

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