Case Porosity Repair - Pontiac Grand Prix Service Manual

7F-38 1%9
PONTIAC SERVICE MANUAL
(3) No oil return hole.
b. Front pump attaching bolts loose or damaged or
missing.
c. Front pump housing O-ring damaged or cut.
d. Converter leak in weld area.
e.
Porous casting (pump).
5. Oil Comes Out Vent Pipe
a. Transmission over-filled.
b. Water in oil.
c. Foreign material between pump and case or
between pump cover and body.
d. Case
-
porous near converter bosses. Front pump
cover or housing oil channels shy of stock near.
breather.
e. Pump to case gasket mispositioned.
CASE POROSITY REPAIR
Transmission external oil leaks caused by case porosity
(not cracks) have been ~uccessfully repaired with the
transmission in the car by following the recommended
procedure:
1. Road test and bring the transmission to operating
temperature, approximately 1 80°F.
2. Place car on a hoist or jack stand, engine running
and locate source of oil leak (see POSSIBLE POINTS
OF OIL LEAKS). Check for oil leaks in DRIVE, LOW
and REVERSE ranges.
NOTE: Use of a mirror is helpful in locating leak.
3. Shut engine off and thoroughly clean area to be
repaired with a cleaning solvent and a brush, then air
dry.
NOTE: A clean
,
dry soldering acid brush can be used to
clean the area arid also to apply the epoxy cement.
4. Using instructions of the manufacturer, mix a
sufficient amount of epoxy cement, Group No. 4.103
(0.423), Part No. 1360016 (Zl) (or 3M-Scotch
Weld-22 16) to make the repair.
NOTE: Observe cautions of manufacturer in handling.
5. While transmission case is still HOT, apply the
epoxy cement to the area to be repaired.
NOTE: Make sure area to be repaired is fully covered.
6. Allow epoxy cement to cure for 3 hours for
13600 16 (1 hour for 3M-Scotch Weld) before starting
engine.
7. Road test car to bring transmission to operating
temperature of 180°F and recheck for leaks.
TORQUE SPECIFICATIONS
LOCATION
TORQUE
LB. FT.
Case to Cylinder Block Bolts..
................
40
Flywheel to Cbnverter Bolts..
.................
30
Converter Cover Pan to Case Screws.
..........
6
Case Cooler Line Fittings..
...................
16
Low Band Adjusting Screw. Lock Nut.
.........
25
Pump Body to Pump Cover Bolts..
............
2Q
Valve Body to Case Bolts..
...................
10
Solenoid to Valve Body Bolts.
...............
10
Vacuum Modulator Clamp Bolt.
..............
10
Pump Assembly to Case Bolts..
...............
20
Rear Bearing Retainer to Case Bolts.
..........
30
Oil Pan to Case Bolts.
.......................
12
Speedometer Sleeve Clamp Bolt.
..............
8
Governor Cover Bolts..
.......................
10
Park Lock Bracket Bolts..
....................
10