Caterpillar DP100 Forklift Service and Schematic Manual (99799-80120)

This Cat is a diesel, counterbalanced lift truck for moving pallets and materials around a plant, warehouse, or yard. When one comes into my shop with a fault, leak, wiring issue, or worn drive component, this is the kind of book a working technician reaches for. It is for repairs, adjustments, testing, teardown, and reassembly, not daily operator instruction.

What this manual helps you do

• Trace electrical circuits and use the wiring schematics during fault diagnosis.
• Check hydraulic, brake, steering, cooling, and power-train systems.
• Follow service procedures for the mast, forks, axles, transmission, and related truck systems.
• Diagnose operating problems with workshop troubleshooting guidance and service data.
• Rebuild or adjust truck assemblies, while using the included engine publication for engine work.

Who this is for

This suits a warehouse maintenance technician, dealer technician, independent forklift shop, plant mechanic, or rental fleet mechanic working on Cat diesel trucks. The operator handbook is the companion volume for driving instructions, while this set is the workshop reference.

FAQ

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

A: You receive 45 PDF files containing four separate Cat publications, split by section, with 1,183 pages total. The files can be searched, text can be copied, and the pages can be printed or viewed at different zoom levels.

Q: Which trucks and serials does it cover?

A: It covers Cat DP100, DP115, DP135, and DP150 trucks. The DP100 serial coverage shown is 3DP-10011-up, so check the truck plate against that range before starting work.

Q: How does this fit the repair job?

A: It is a workshop-level service and schematic set for troubleshooting and repairing the truck, with the matching engine material included in the bundle. That gives a shop one working set for electrical, hydraulic, mechanical, and engine-related service.

If your truck matches the models and serial coverage, this is the manual set to keep beside the workbench for in-house repairs.

Models covered by this manual

Caterpillar publication 99799-80120 is the factory service and schematic manual for the DP100, serial range 3DP-10011-up. The same publication covers 3 further forklift models: DP115, DP135, DP150. Check the model and serial number on your data plate before ordering.

Table of Contents:

• 99799-80120 – Chassis & Mast Service Manual
  • Foreword
  • General Information
  • Cooling System
  • Electrical System
  • Power Train
  • Speed Powershift Transmission
  • Front Axle And Reduction Differential
  • Rear Axle
  • Brake System
  • Steering System
  • Hydraulic System
  • Mast And Forks
  • Hydraulic Fork Positioner
  • Hydraulic Side Shifters
  • Service Data

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