Removing End Plate; Removing Flow Control Valve; Removing Pressure Plate - Pontiac Grand Prix Service Manual

9 -48
1969 PONTIAC SERVICE MANUAL
Fig. 9-85 Removing End Plate
1. Remove union and seal.
2. Remove pump rear mounting bolts.
3. Lift reservoir from housing by tapping reservoir at
flange, rocking back and forth.
4. Remove mounting bolt and union O-ring seals.
5. Remove end plate retaining ring. Push end plate
retaining ring out of groove, using a punch through
1/8" diameter hole in pump housing (Fig. 9-84) and
remove with screwdriver. End of retaining ring should
be next to hole to ease removal.
Fig. 9-86 Removing Flow Control Valve
Fig. 9-87 Removing Pressure Plate
6. Remove end plate and spring. End plate is spring
,
loaded and will generally sit above the housing level.
If sticking should occur, a slight tapping action will
'
free the plate (Fig. 9-85).
7. Remove end plate O-ring.
8. With pump housing turned over, remove flow
control valve and spring (Fig. ~ 8 6 ) and tap housing
on wood block until pressure plate falls free (Fig.
9-87).
9. Remove pressure plate, pump ring and vanes, being
careful not to drop parts (Fig.
9-88).
10. Remount housing in vise. Using a suitable tool,
remove shaft retainer ring on end of drive shaft.
Discard ring.
11. Remove rotor and thrust plate.
12. Remove shaft through front of housing (Fig. 9-89).
CLEANING AND INSPECTION
Carefilly clean all parts, except O-ring seals which are
to be replaced and should not be immersed in cleaning
solvent. Lubricate all O-ring seals and the drive shaft
seal with vaseline and install in proper location. Be sure
not to immerse drive shaft seal in cleaning solvent as this
could damage it. Fig. 9-90 shows an exploded view of the
Pump.
PUMP
ASSEMBLE
NOTE:
Be sure allparts are clean during reassembly.
1. Insert shaft at hub end of housing, spline end
entering
mounting face side (Fig. 9-91).