This document is a product manual for Danfoss Series 90 pumps. It introduces the structure, working principle, usage method, maintenance method and other information of the pumps.
This service manual provides detailed instructions for installing, maintaining, and performing minor repairs on Danfoss Series 90 axial piston closed circuit pumps. It includes component descriptions, troubleshooting, and repair procedures. Safety precautions and cleanliness requirements are emphasized to ensure proper operation and prevent contamination. Major repairs require Danfoss Authorized Service Centers to maintain warranty validity.
The manual covers pump design, system circuit operation, adjustment procedures for valves and controls, and step-by-step repair guides for components like shaft seals, multi-function valves, and displacement controls.
It is an axial piston closed circuit pump that converts input torque into hydraulic power.
The angle of the swashplate controls the volume of fluid displaced into the system.
Thoroughly clean the unit before beginning maintenance or repair activities.