Caterpillar DP50NB Forklift Service and Operator Manual (99739-6B110)

A Cat DP50NB is a diesel counterbalanced forklift used to move pallets around warehouse floors, loading areas, and yards. When one is pulled from an aisle during a second-shift breakdown, this is the kind of manual a warehouse maintenance tech or dealer mechanic reaches for. It gives the shop repair procedures and service data needed to get the truck working again.

What this manual helps you do

• Trace electrical faults through wiring and control circuits.
• Check and adjust brakes, steering, hydraulics, mast, and forks.
• Follow procedures for power train, transmission, axles, and cooling-system work.
• Diagnose operating problems using service data and troubleshooting guidance.
• Rebuild or replace truck assemblies, with matching engine material included in the set.

Who this is for

This suits plant maintenance teams, dealer technicians, independent forklift repair shops, and rental fleet mechanics working on Cat diesel counterbalanced trucks. It is workshop material for the repair trade, with operator information included as the companion side of the set.

FAQ

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

A: You receive 8 separate Cat publications delivered as 53 PDF files, split by section, with 2,091 pages in total. The PDFs carry a real text layer, so you can search and copy text, and the pages support normal printing and on-screen zooming.

Q: Which trucks and serial range does it fit?

A: It covers GP40N, DP40NB, GP45N, DP45NB, GP50CN, DP50CNB, GP50N, DP50NB, GP55N, DP55NB, and TB45. For DP50NB, the printed serial coverage is CT28E-50001-79999.

Q: How does it fit the repair job?

A: Use it for workshop diagnosis, adjustments, fault tracing, component removal, and reassembly across the truck systems. The 8-publication set brings the chassis, engine, operator, and related service material together for the same truck family.

For the listed DP50NB serial range, this is the right service set to support in-house repairs and return-to-work checks.

Models covered by this manual

Caterpillar publication 99739-6B110 is the factory service and operator manual for the DP50NB, serial range CT28E-50001-79999. The same publication covers 8 further forklift models: DP45NB, DP50CNB, DP55NB, GP40N, GP45N, GP50CN, GP50N, GP55N. The cover also lists DP40NB, TB45. Check the model and serial number on your data plate before ordering.

Caterpillar PDF Manuals