Case Porosity Repair

Case Porosity Repair
Some external leaks are caused by case porosity in non-pressurized areas. You can usually repair these leaks with the transmission in the car.
1. Thoroughly clean the area to be repaired with a cleaning solvent. Air dry the area.

Caution: Epoxy adhesive may cause skin irritations and eye damage. Read and follow all information on the container label as provided by the manufacturer.

2. Using instructions from the manufacturer, mix a sufficient amount of epoxy, GM P/N 1052533 or equivalent, to make the repair.
3. While the transmission case is still hot, apply the epoxy. You can use a clean, dry soldering acid brush to clean the area and also to apply the epoxy cement. Make certain that the area to be repaired is fully covered.
4. Allow the epoxy cement to cure for three hours before starting the engine.
5. Repeat the fluid leak diagnosis procedures.

Line Pressure Adapter and Gauge Installation

^ Tools Required
- J21867-94 Line Pressure Adapter Kit
- J21867-100 Pressure Gauge Adapter

1. Remove the air cleaner assembly.
2. Raise the vehicle and suitably support the vehicle.





3. Remove the Line Pressure Plug.





4. Install J21867-100 using a ratchet box wrench. Tighten the adapter so that the insert hole for the dowel rod is in a 1 o'clock position.
5. Lower the vehicle.





6. Install the dowel rod from J21867-94.





7. Attach a line pressure gauge and hose to the dowel rod fitting.
8. Secure the hose in a safe position to avoid damage to the tools and vehicle during the line pressure testing.
9. When you have completed the testing procedure, remove the line pressure gauge and hose from the dowel rod fitting.
10. Remove the dowel rod.
11. Raise the vehicle and suitably support the vehicle.
12. Remove J21867- 100 using a ratchet box wrench.
13. Install the line pressure plug.
14. Lower the vehicle.
15. Install the air cleaner assembly.