Pump Code No. 76 71 955

DISASSEMBLING/ASSEMBLING POWER STEERING PUMP

- PUMP REMOVED -

Pump Code Number: 76 71 955







Absolute cleanliness is essential when working on power steering pumps.






Pull hook-type Snap ring (1) Out of groove with a pliers.
Take off cover (2) and spring (4).






Pull out face plate (5) from housing (11).






Push rotor in Shaft (13) and lift out snap ring (7).






Tilt out rotor set (8) and face plate (9). Pull out input shaft (13).






Remove radial oil seal (12) and O-rings (3 and 6).
Support rings (3.1 and 6.1) remain in housing Clean all parts thoroughly.






Assembling:
Lubricate all parts with hydraulic fluid. Pack radial oil seal (12) between sealing lip and dust lip with grease and install seal in housing (11) with a suitable mandrel (sealing lip faces in).






Guide drive shaft (13) into housing (11) insert dowel pins (10) in housing bores. Mount face plate (9) on dowel pins (10) with short side (S) facing valve. Groove (A) faces cover.






Mount cam ring with casting arrow facing cover end (arrows show turning direction of pump) on dowel pins (10)






Install rotor with chamfer facing drive end on shaft (13).
Install snap ring (7) in radial groove of shaft (13).
Push down on shaft (13) until snap ring (7) rests in opening of rotor.






Insert wings with polished, rounded outside surfaces facing cam ring. Check that wings move easily.






Insert O-rings (3 and 6)
Support ring (3.1) is in front of and support ring (6.1) behind O-ring.






Install face plate(5) on dowel pins (10) with short side (S) facing valve.






Install Spring (4) with Large diameter and facing cover.
Pres Cover (2) into housing with a hydraulic press far enough that hook-type snap ring can be installed In groove.
Check operation of power steering pump after installation.