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Caterpillar GC70K STR Forklift Engine Service and Schematic Manual (99739-82110)

Format: PDF (Printable Document)

File Language: English

File Pages: 2822

File Size: 145.35 MB (Speed Download Link)

File Count: 119 PDF files

Brand: Caterpillar

Model: GC70K 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 GC70K STR Forklift Engine Service and Schematic Manual (99739-82110)

A Cat GC70K-series truck shifts heavy pallet loads across a warehouse floor or yard on cushion tyres, usually where uptime matters more than comfort. When a second-shift breakdown pulls one from the aisle, a warehouse tech, dealer technician, or fleet mechanic reaches for the service manual to test, adjust, repair, and return it to work. This is the engine book of the set, covering GC35K, GC40K, GC45K SWB, GC45K, GC55K, GC60K, and GC70K trucks.

What this manual helps you do

  • Check engine specifications, operating systems, torque values, and clearances.
  • Trace fuel, cooling, lubrication, intake, exhaust, and engine electrical systems.
  • Test and adjust engine components during fault finding and scheduled service.
  • Follow engine disassembly and assembly procedures for shop repairs.
  • Verify settings and replace worn engine parts during a rebuild.

Who this is for

This suits warehouse maintenance techs, plant maintenance teams, dealer technicians, independent forklift repair shops, and rental fleet mechanics. It fits the industrial forklift repair trade; chassis, mast, hydraulics, steering, and related truck systems are covered in the companion chassis manual, also available.

FAQ

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

A: You receive 9 separate Cat publications in 119 PDF files, split by section, with 2,822 pages total. The set has a real text layer, so you can search and copy text, then print or zoom the sections you need.

Q: Does it fit my truck and serial range?

A: It covers GC35K, GC40K, GC45K SWB, GC45K, GC55K, GC60K, and GC70K, with serial coverage AT87B-00001-up, AT88B-00001-up, and AT89B-00001-up.

Q: How does it fit the job?

A: Use it for engine testing, adjustment, teardown, assembly, and repair when a truck is down or overdue for service. It gives the workshop procedures and service data needed to get the engine back into the shift.

For the engine side of these Cat cushion-tyre trucks, this is the manual set to work from. It supports fault finding, rebuilds, and faster return to service.

Models covered by this manual

Caterpillar publication 99739-82110 is the factory engine service and schematic manual for the GC70K STR. The same publication covers 8 further forklift models: GC35K, GC40K, GC40K STR, GC45K STR, GC45K SWB, GC55K STR, GC60K, GC70K. 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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