Oil Pan And/Or Oil Pan Gaskets; Rear Main Bearing Oil Seal - Pontiac Grand Prix Service Manual

V-8
ENGINE 6-61
10. On air-conditioned cars, replace compressor, fan
and pulley assembly and adjust belt tensions.
1 1. Replace fan shield.
12. Connect engine ground cables and battery cable.
13. On Firebird models, replace distributor cap.
14. Refill engine crankcase.
OIL PAN ANWOR OIL PAN GASKETS
-
TEMPEST
MODELS
REMOVE
1.
Remove engine, and clutch (SM) from vehicle.
2. Place engine on a suitable stand.
3. Remove oil pan.
REPLACE
1. Install new gasket on oil pan using gasket retainers
(Figs. 6-10 1 and 6-102).
2. Install new oil pan gasket in rear main bearing cap
(Fig. 6-103).
3. Install oil pan into position and torque retaining
bolts 12 lb. ft.
4. Remove engine from stand.
5. Install engine in vehicle.
OIL PUMP
-
RECONDITION
DISASSEMBLE
1. Remove pressure regulator spring retainer, spring,
and pressure regulator ball.
2. Remove screws retaining cover to oil pump body
and remove cover.
3. Remove driven gear and drive gear with shaft.
NOTE: Oil pump screen should not be removed from
pump body. Be care@ not to loosen screen.
CLEAN AND INSPECT
1. Clean all parts thoroughly. Screen must be thor-
oughly cleaned by using a fluid such as used for
carburetor cleaning.
2. Inspect pressure regulator spring (Fig. 6-105) for
distortion, cracks, and wear on sides.
3. Inspect pressure regulator ball to see that is is not
nicked or otherwise damaged.
4. Inspect pump body, driven gear shaft and cover for
evidence of wear.
5. Inspect pump gears and end of drive gear shaft for
wear (Fig. 6- 105).
6. Inspect oil pump drive shaft (distributor to pump
shaft) for evidence of wear and cracks.
ASSEMBLE
OIL PUMP
1. Install drive and driven gears.
REMOVE
1. Remove engine oil pan (See "Oil Pan
-
Remove and
Replace"). Remove splash baffle.
2. Remove oil pump attaching bolts while holding oil
pump in place. Carefully lower oil pump away from
block with one hand while removing oil pump drive
shaft with other hand (Fig. 6-104).
REPLACE
1. Position drive shaft in distributor and oil pump
drive gears. Place pump against block, using new
gasket between pump and block. Index drive shaft
with pump drive gear shaft. Install two attaching
screws with lockwashers and tighten securely.
NOTE: Removal and installation of pump does not
affect ignition timing, since the oil pump and distributor
drive gear is mounted on the distributor shafi.
2. Install cover and turn drive shaft by hand to ensure
that it turns freely.
3. Install pressure regulator ball, spring and retainer.
IMPORTANT: Oil pressure regulator spring on GTO or
428 may be identiJied by noting appearance of
distributor drive gear.
If
gear is cadmium plate4 oil
pump spring will be 60 psi pressure. Engines with
unplated gear will have 50 psi spring. The 60 psi spring
must not be ured without cadmium plated gear.
CAUTION: Do not attempt ro change oil pressure by
varying length ofpressure regulator valve spring.
REAR MAIN BEARING OIL SEAL
REMOVE
1. Remove oil pan (see Oil Pan
-
Remove and
Replace).
2. Install oil pan.