Tandem Pump
TANDEM PUMPTandem Pump:
1. Flange
2. Body
3. Fate plate
4. Rotor
5. Shaft
6. Axial washer
7. Radial oil seal
8. Seal
9. Guide
10. O-ring
11. Sleeve
12. Slide
13. Piston
14. Spring
15. Shaft
16. O-ring
17. Plug
DISASSEMBLING AND ASSEMBLING TANDEM PUMP
-Pump Removed -
Absolute cleanllness 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 shalt 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 (0.39").
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 (6 ft. lbs.).