Caterpillar DP40K Forklift Operation and Repair Manual Here is our PDF bundle that includes the Caterpillar DP40K forklift operation and repair manual you need (PDF formats). It is the forklift operation and maintenance instructions for your DP40K model trucks from Caterpillar. Caterpillar Cat DP40 DPL40 DP45 DP50 Forklift Lift Trucks Service Repair Workshop Manual DOWNLOAD Caterpillar Cat EP13T..