Key facts
- Brand
- Danfoss
- Model
- Series 90
- Category
- Industrial Robot
- Documents
- 2
- Languages
- EN
- Last added
- 2023-10-20
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Danfoss Series 90 Pumps Service Manual
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.
Danfoss Series 90 specifications
| Model Code | 90 R 055 MA 1 NN 80 L 3 C6 D 03 GCA 42 42 24 |
|---|---|
| Displacement | 55cc |
| Service Bulletin Number | SB-1988-009 |
Source: Danfoss Series 90 55cc Axial Piston Pump Service Manual
All Danfoss Series 90 documents by type
Disassembly, diagnostics and part numbers, for repair.
Questions answered in these manuals
What is the Series 90 pump used for?
It is an axial piston closed circuit pump that converts input torque into hydraulic power.
What does the pump’s swashplate control?
The angle of the swashplate controls the volume of fluid displaced into the system.
How do I identify the correct part for my pump?
Use the model code and date code from the nameplate to match part numbers in the service parts list. Service bulletins may also specify part changes.
From: Danfoss Series 90 55cc Axial Piston Pump Service Manual
What is the purpose of service bulletins?
Service bulletins contain detailed information on part changes, interchangeability, and additional parts involved. They must be reviewed before ordering parts.
From: Danfoss Series 90 55cc Axial Piston Pump Service Manual