Pontiac FIREBIRD 1972 Service Manual page 949

7E-60 1972 PONTIAC SERVICE MANUAL
Fig. 7E-104 Removing Pressure Regulator Valve
2. Compress regulator boost valve bushing against pres-
sure regulator spring and remove snap ring, using
snap ring pliers (Fig. 7E-103).
3. Remove regulator boost valve bushing and valve.
4. Remove pressure regulator spring.
5. Remove spring retainer, spacer(s) if present and
regulator valve (Fig. 7E-104).
RETAINING
PIN
(r-
BORE PLUG
THRUST WASHER
7
PUMP OIL SEAL RIN&
REGULATOR SPR
BOOST BUSHING
- -
Fig. 7 E - 1 0 6 Exploded View of Pump Cover
8. Remove hook-type oil seal rings from pump cover
(Fig. 7E- 106).
9. Remove pump-to-forward clutch housing selective
washer.
10. Mark drive and driven gears for reassembly in same
position and remove gears from pump body (Fig.
7E- 107).
INSPECT
6. Remove pump cover-to-body attaching bolts and
remove cover from pump body.
7. Remove retaining pin and bore plug from pressul
regulator bore (Fig. 7E-105).
Fig. 7E-105 Removing Retaining Pin and Bore Plug
NOTE:
The 1972 solid-type pressure regulator
valve does not contain oil holes and an orifice
cup plug like previous valves. The solid- type
valve must only be used in the pump cover with
the squared-off pressure regulator boss (Fig.
7E- 1 0 8 ) . The previous pressure regulator valve
PUMP DRIVE GEAR
(TANGS UP)
\
- ~ -
Fig. 7 E - 1 0 7 Removing or Installing Pump Gears