Fluid Pump: Service and Repair

OIL PUMP BODY SEAL REMOVAL/INSTALLATION [LA4A-EL]
Issue
In some eases, fluid will leak from the pump-to-case interface area of the transaxle. This may be caused by the pump body seal being rolled or pinched during installation.

Action
If fluid leak is detected in the pump-to-case interface area, refer to the following service procedure to replace the pump body seal.

Caution This procedure does not require complete teardown of the transaxle and should only be used for leak concerns. If replacement of the pump body or pump support is required, the transaxle must be disassembled and reassembled. The components will be misaligned if this repair is performed while the transaxle is still in the vehicle.

1. Remove the transaxle.
2. Remove the torque converter and drain from the transaxle.





3. Remove the transaxle drain plug from the transaxle case. Allow the transaxle to drain completely.





4. Remove the pump drive shaft.





5. Position the transaxle with the pump facing up and remove the TSS sensor mounting bolt.





6. Separate the Turbine Shaft Speed (TSS) sensor from the pump.





7. Remove the nine (9) pump mounting bolts.





8. Install the SSTs on the pump.
9. Install a large screwdriver through the TSS sensor hole. Do not locate the screwdriver on the reverse clutch hub tabs.





10. Remove the pump while holding the components into the case with the screwdriver. Remove the #1 thrust bearing. This bearing may be attached to the pump support or on the reverse clutch hub.





11. Remove the pump support mounting bolts.





12. Remove the pump support.





13. Remove the pump-to-case gasket and separator plate and discard the gasket.





14. Remove the pump seal and discard it.





15. Install the SST in the holes. Use the bolt hole next to the TSS sensor hole and the bolt hole opposite





16. Install the separator plate and new gasket.





17. Install the pump support
18. Install four (4) mounting bolts and tighten the bolts to 13 Nm (1.3 kgf.m, 10 ft. lbs.).





19. Remove the SST and install and torque the remaining six (6) bolts to 13 Nm (1.3 kgf.m, 10 ft. lbs.).
20. Install the new pump seal. Ensure that the white stripe is visible all around the pump.





21. Visually inspect the case flange for damage or burrs.





22. Lubricate the #1 thrust bearing with petroleum jelly and install on the pump support.
23. Lubricate the pump support seals and the pump bore in the case.





24. Lower the pump component into the case.





25. Install the nine (9) pump mounting bolts and torque to 13 Nm (1.3 kgf.m, 10 ft. lbs.) in sequence shown.





26. Install the Turbine Shaft Speed (TSS) sensor and mounting bolts and tighten to 13 Nm (1.3 kgf.m, 10 ft. lbs.).
27. Install the pump drive shaft.
28. Install the torque converter into the transaxle.





29. Install the transaxle.