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Caterpillar GC55K STR Forklift Engine Service and Schematic Manual (99739-82110)

Format: PDF (Printable Document)

File Language: English

File Pages: 2823

File Size: 147.34 MB (Speed Download Link)

File Count: 120 PDF files

Brand: Caterpillar

Model: GC55K STR

Equipment Type: Forklift

Book No: 99739-82110

Serial No (models covered): AT87B-00001-up, AT88B-00001-up, AT89B-00001-up

Manuals Included: 9 publications – Chassis & Mast Service Manual, Chassis Service Manual, 3L, G6 Gasoline Engine Service Manual, 4X LPG Engine Service Manual

Type of Document: Engine Service & Schematic Manual

Categories: ,

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Caterpillar GC55K STR Forklift Engine Service and Schematic Manual (99739-82110)

A Cat GC-series counterbalanced truck keeps pallets moving across the warehouse or yard, until an engine fault pulls it out of the aisle. This is the engine book of the set, used by maintenance techs and repair shops to test, adjust, rebuild, and return the truck to service. I've used manuals like this on second-shift breakdowns when the truck needs to be back before the next wave.

What this manual helps you do

  • Check engine specifications, system operation, torque values, and service clearances.
  • Test and adjust engine systems using the stated workshop procedures.
  • Diagnose operating faults and trace related wiring and schematic information.
  • Disassemble and assemble engine components in the correct service sequence.
  • Verify repairs before putting the truck back into fleet service.

Who this is for

This suits warehouse maintenance techs, dealer technicians, independent forklift shops, plant maintenance teams, and rental fleet mechanics working on Cat GC-series trucks. The companion chassis manual, also available, covers the truck systems around the engine, including the chassis, mast, hydraulics, power train, and steering.

FAQ

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

A: You receive a 9-publication set as 120 PDF files, split by section, with 2,823 pages total. The files support on-screen zooming, printing, text search, and copying text.

Q: Which trucks and serial ranges does it fit?

A: It covers GC35K, GC40K, GC45K SWB, GC45K, GC55K, GC60K, and GC70K, including serial ranges AT87B-00001-up, AT88B-00001-up, and AT89B-00001-up. That makes it a direct reference for the GC55K STR family listed here.

Q: How does it fit the repair job?

A: Use it for engine-side diagnosis, adjustment, teardown, assembly, and service-data work. It gives a shop the procedures and specifications needed to handle engine repairs in-house.

For a GC55K STR engine fault, this set gives you the workshop information to test the problem, rebuild the affected assembly, and get the truck earning its place on the next shift.

Models covered by this manual

Caterpillar publication 99739-82110 is the factory engine service and schematic manual for the GC55K STR. The same publication covers 8 further forklift models: GC35K, GC40K, GC40K STR, GC45K STR, GC45K SWB, GC60K, GC70K, GC70K STR. The cover also lists GC45K, GC55K. Check the model and serial number on your data plate before ordering.

📘 Show Index

Table of Contents:

  • 99789-84120 – 3L, G6 Gasoline Engine Service Manual
    • Foreword
    • Determining When to Overhaul the Engine
    • Engine Replacement
    • Specifications
    • Major Nuts and Bolts Tightening Torque
    • Sealers, Adhesives and Lubricants
    • Use of RTV and Anaerobic Sealer
    • Diagnostic Information and Procedures
    • Valve Train Diagnosis
    • Oil Leak Diagnosis
    • Electrical Throttle and Governor Control System
    • Ignition System and Distributor
    • Starter Motor
    • Special Tools and Equipment
  • 99739-8D100 – Chassis & Mast Service Manual
    • Foreword
    • General Information
    • Cooling System
    • Electrical System
    • Power Train
    • Powershift Transmission
    • Front Axle and Reduction Differential
    • Rear Axle
    • Brake System
    • Steering System
    • Hydraulic System
    • Mast and Forks
    • Service Data
    • How to Read Circuit Diagrams
    • Engine Schematic
    • Circuit Diagrams
  • 99739-82110 – Chassis & Mast Service Manual
    • Foreword
    • General Information
    • Cooling System
    • Electrical System
    • Power Train
    • Powershift Transmission
    • Front Axle and Reduction Differential
    • Rear Axle
    • Brake System
    • Steering System
    • Hydraulic System
    • Mast and Forks
    • Service Data
    • How to Read Circuit Diagrams
  • 99739-94100 – Chassis & Mast Service Manual
    • Foreword
    • Rear Combination Lamp Kit
    • Warning Lamp Kit
    • Working Lamp Kit
    • Creep Speed Kit
    • Foot Directional Control Group
    • ENGINE SHUTDOWN KIT (LPG models only)
    • Enclosed Alternator Field Kit
    • Disconnect Switch Kit
    • Description
    • Key Kit
    • Back Buzzer Kit
    • Dual Element Air Cleaner
    • Dust and Foundry Kit
    • Back Mirror Kit
  • 99739-82100 – Chassis & Mast Service Manual
    • Foreword
    • General Information
    • Cooling System
    • Electrical System
    • Power Train
    • Powershift Transmission
    • Front Axle and Reduction Differential
    • Rear Axle
    • Brake System
    • Steering System
    • Hydraulic System
    • Mast and Forks
    • Service Data
    • News
  • 99789-84122 – Chassis Service Manual
    • Foreword
    • Glossary
    • — Maintenance
    • 3 — LPG Fuel System
    • Fuel System Description
    • LPG Symptom Diagnostics
    • Dst Installation Instructions
    • Electrical Flow Diagram
    • Electrical System Schematic
    • On-Vehicle Service Wire Harness Repair
    • — DIAGNOSTIC TROUBLE CODES (DTCs)
    • Engine Control Module
    • Mixer and Throttle Body Assembly (New)
    • ALTITUDE vs. BAROMETRIC PRESSURE
  • 99789-84111 – Chassis Service Manual
    • Foreword
    • General Information
    • Maintenance
    • LPG Fuel System Operation
    • Gasoline Fuel System Operation
    • LP Fuel System Diagnostics
    • Gasoline Fuel System Diagnostics
    • Symptom Diagnosis
    • Schematics
    • Diagnostic Trouble Codes
    • Fuel System
  • 99789-84133 – Chassis Service Manual
    • Foreword
    • General Information
    • Maintenance
    • LPG Fuel System
    • Fuel System Diagnosis
    • Diagnostic Scan Tool (DST)
    • Engine Wire Harness Repair
    • Diagnostic Trouble Codes
    • Definitions

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