Oil Leaks - Pontiac Grand Prix Service Manual

4A-26 1969 PONTIAC SERVICE MANUAL
6. Check tooth contact pattern with red lead test.
NOTE:
It may be necessaFy to readjust the backlash to
obtain the correct tooth contact pattern. On high mileage
gear sets where a definite wear pattern has been
established, it may be necessary to exceed .009"
backlash to obtain the desired tooth contact. It is
important, however, not to exceed .009" backlash on new
gear sets.
I f readjusting the backlash does not give the correct
tooth contact pattern, the pinion depth must be
readjusted.
7. When correct tooth contact pattern is obtained,
install cover with new gasket on housing. DO NOT
USE GREASE TO RETAIN GASKET. Insert two
upper cover bolts carefully through cover and gasket.
Be sure gasket is flat and not twisted between cover
and housing. Be sure all cover bolts pass through
gasket holes. Torque to 25 lb. ft.
OIL LEAKS
It is difficult to determine the source of some oil leaks.
Even after the point of leakage has been determined, it
is hard to tell whether the oil is leaking past the lip of
the seal or past the O.D. of the seal. Therefore, it is a
good idea to make sure the leak is stopped by using a
nonhardening sealing compound around the O.D. of
the new seal.
SPECIFICATIONS
Rear Axle Upper Control Arm ASW. REAR AXLE
Type.
................................
Semi-Floating
Type of Drive..
.................
.Modified Hotchkiss
Drive-Final
..........................
Hypoid Gear
Lubricant Capacity.
........
Pontiac-72 oz. or 41, 4 pints
Tempest, Firebird or Grand Prix-
48 oz. or 3 pints
Lubricant.
....................
M ulti-purpose Hypoid
Gear Lubricant
Lubricant Level..
.........
.Bottom of Filler Plug Hole
RING AND PINION GEAR
Backlash
................................
.005' - .009'
Ring gear run-out maximum.
...................
.002"
Ratios.
.................
.See Fig. 4A-4A for Pontiac.
See Fig. 4A-4B for Tempest.
See Fig. 4A-4C for Firebird.
See Fig. 4A-4D for Grand Prix.
Pinion Bearing Preload (with Ring Gear)
New Bearings (New Seal)
................
.25 lb. in.
Old Bearings (New Seal).
................
.17 lb. in.
Side Bearing Preload.
.............
.Slip Fit Plus .008'
Torque Lb. R.
Differential Cover to Carrier Bolts.
...............
.25
Differential Bearing Caps to Carrier Bolts..
........
.70
Differential Ring Gear to Case Bolts-Pontiac
.....
.90
Differential Ring Gear to Case Bolts-
Tempest, Firebird or Grand Prix..
..............
.60
Differential Pinion Shaft Lock Screw.
.............
.I5
Rear U-Joint Companion Flange Nut
with Lock PIatcs.
.............................
.12
Rear U-Joint Companion Flange Nut
...........................
with Lockwashers.. .I4
to Axle ~ o u s i n ~ Bolt-Pontiac
-
Tempest or Grand Prix..
........
Rear Axle Upper Control Arm Assy
to Axle Housing Nut-Pontiac,
Tempest or Grand Prix..
........
Rear Axle Lower Control Arm Assy
to Axle Housing Bolt-Pontiac,
Tempest or Grand Prix.
.........
Rear Axle Lower Control Arm Assy
to Axle Housing Nut-Pontiac.
-
Tempest or Grand Prix.
.......................
.80
Rear Axle Bumper Spacer to Axle Housing
Bracket Bolt and Nut (Station Wagon)-
Tempest.
....................................
.50
Rear Axle Upper Control Arm Assy to
...
Frame Bolt-Pontiac, Tempest or Grand Prix.
110
Rear Axle Upper Control Arm Assy
..
to Frame Nut-Pontiac, Tempest or Grand Prix
.80
Rear Axle Lower Control Arm Assy
to Frame Bolt-Pontiac, Tempest or Grand Prix.. 110
Rear Axle Lower Control Arm Assy
.
to Frame Nut-Pontiac, Tempest or Grand Prix. .80
Leaf Spring Front Eye to Frame Bracket Nuts-
...................................
Firebird. .I00
....
Leaf Spring Rear Eye to Shackle Nuts-Firebird
50
Rear Shock Absorber to Axle Housing Bracket Nut. .65
Shock Absorber to Frame Bolt-
Pontiac, Tempest or Grand Prix
................
.20
..........
Shock Absorber to Frame Bolt-Firebird.
.8
Rear Wheel and Drum to Axle Shaft Nut-Pontiac. .80
Rear Wheel and Drum to Axle Shaft Nut-
Tempest, Firebird or Grand Prix..
..............
.65
...
Rear Brake Assy to Axle Housing Bolt and Nut. .35
Pinion Nose Bumper-Pontiac,
Tempest or Grand Prix.
........................
.8
Differential Case Bolts-Grand Prix Medium Duty.. .30