Disassembling and Assembling Tandem Pump

Absolute cleanliness is required when assembling the pump.

- Lubricate all parts with hydraulic fluid.





- Mark position of the flange to the shaft and body sections to each other.

- Unscrew bolts.

- Take off body.





- Unscrew bolts.

- Take off body (4).





- Replace seal (8) (Wide end facing plate) and guide (9).





- Replace O-ring (10).

- Bolt body - bore to bore.

- Tightening torque = 14 + 5 Nm (10 + 4 ft. lbs.).





- Unscrew both plugs (17).

- Take off piston and sliding ring with sleeve.





- Press triangular flange off of the shaft with a press, while supporting on the flange.





- Replace radial oil seal (7) - sealing lip facing in and filled with grease.





- Install axial washer (6) and run in Shaft (5).





- Press on flange with Special Tool 32 3 060.

- Shaft protrusion = approx. 1 mm (0.039").

- Check marks.





- Insert sleeve (11) and sliding ring (12).

- Slide in both pistons (13), spring (14) and shaft (15).





- Replace O-ring (16).

- Tighten plugs (17) with a torque of 50 Nm (36 ft. lbs).





- Replace O-ring (10).

- Insert axial washer(6).

- Mount and bolt body.

- Tightening torque = 8 Nm (6ft. lbs.).