Caterpillar DP135N1 Forklift Service and Operator Manual (99799-60100)

A Cat DP135N1 is a diesel counterbalanced forklift for moving and stacking loads around a warehouse, dock, or yard. When a truck is down during second shift, maintenance techs use the service manual to trace faults, set components, and get it back into the aisle. It is aimed at in-house plant maintenance, dealer technicians, independent forklift shops, and rental fleet mechanics.

What this manual helps you do

• Trace electrical faults through wiring, switches, sensors, and starting circuits.
• Check and adjust brakes, steering, axles, transmission, and drive systems.
• Follow procedures for hydraulic components, mast assemblies, forks, and lift controls.
• Diagnose engine, cooling, fuel, and power-train problems using service data and fault checks.
• Rebuild or replace workshop components with removal, inspection, adjustment, and installation guidance.

Who this is for

This suits a warehouse maintenance tech, plant mechanic, dealer technician, independent forklift repair shop, or rental fleet mechanic working on the Cat DP135N1 trade. The operator handbook and companion chassis material are also available for daily operation and truck-system reference.

FAQ

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

A: You receive 7 Cat publications in 38 PDF files, split by section, with 1,780 pages total. The PDFs have a real text layer, so you can search and copy text, as well as print or zoom the pages.

Q: Which trucks and serials does it fit?

A: It covers DP100N1, DP120N1, DP135N1, DP150N1, and DP160N1. For DP135N1, the printed serial coverage is AT15E-00011-up.

Q: How does it fit the job I'm doing?

A: This is the workshop repair set for taking a diesel counterbalanced truck from fault finding through adjustment, repair, and return to service. It gives the maintenance team one organised reference set for breakdowns and planned work.

If your truck matches the models and serial range, this set gives you the repair information needed to pull it from service, fix it, and get it working before the next wave.

Models covered by this manual

Caterpillar publication 99799-60100 is the factory service and operator manual for the DP135N1, serial range AT15E-00011-up. The same publication covers 4 further forklift models: DP100N1, DP120N1, DP150N1, DP160N1. Check the model and serial number on your data plate before ordering.

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