Part 1
DisassemblyCAUTION: Do not disassemble parts behind Drum Support.
1. Drain ATF through drain plug.
2. Remove torque converter by holding it firmly and turning while pulling straight out.
3. Check torque converter one-way clutch using a check tool as shown.
a. Insert a check tool into the groove of bearing support built into one-way clutch outer race.
b. When holding bearing support with a check tool, rotate one-way clutch spline using suitable tool.
c. Make sure that inner race rotates clockwise only. If not, replace torque converter assembly.
4. Remove converter housing from transmission case.
CAUTION: Do not scratch converter housing.
5. Remove O-ring from input clutch assembly.
6. Remove bolts for oil pump assembly and transmission case.
7. Attach the Tool to oil pump assembly and extract it evenly from transmission case.
Tool number: ST25850000 (J-25721-A)
CAUTION:
^ Fully tighten the Tool.
^ Make sure that bearing race is installed to the oil pump assembly edge surface.
8. Remove O-ring from oil pump assembly.
9. Remove bearing race from oil pump assembly.
10. Remove needle bearing from front sun gear.
11. Remove front sun gear assembly from front carrier assembly.
NOTE: Remove front sun gear by rotating left/right.
12. Remove seal rings from input clutch assembly.
13. Remove front carrier assembly from rear carrier assembly (with input clutch assembly and rear internal gear.)
CAUTION: Remove front carrier assembly with needle bearing.
14. Loosen lock nut and remove band servo anchor end pin from transmission case.
15. Remove brake band from transmission case.
^ To prevent brake linings from cracking or peeling, do not stretch the flexible band unnecessarily. When removing the brake band, always secure it with a clip as shown. Leave the clip in position after removing the brake band.
^ Check brake band facing for damage, cracks, wear or burns.
16. Remove mid carrier assembly and rear carrier assembly as a unit.
17. Remove mid carrier assembly from rear carrier assembly.
18. Remove needle bearing (front side) from mid carrier assembly.
19. Remove needle bearing (rear side) from mid carrier assembly.
20. Remove bearing race from rear carrier assembly.
21. Remove needle bearing from rear carrier assembly.
22. Remove mid sun gear assembly, rear sun gear assembly and high and low reverse clutch hub as a unit.
CAUTION: Remove them with bearing race and needle bearing.
23. Remove high and low reverse clutch assembly from direct clutch assembly.
CAUTION: Make sure that needle bearing is installed to the high and low reverse clutch assembly edge surface.
24. Remove needle bearing from drum support.
25. Remove direct clutch assembly from reverse brake.
26. Remove snap ring from A/T assembly harness connector.
27. Push A/T assembly harness connector.
CAUTION: Do not damage connector.
28. Remove oil pan and oil pan gasket.
29. Check foreign materials in oil pan to help determine causes of malfunction. If the A/T fluid is very dark, smells burned, or contains foreign particles, the frictional material (clutches, band) may need replacement. A tacky film that will not wipe clean indicates varnish build up. Varnish can cause valves, servo, and clutches to stick and can inhibit pump pressure.
^ If frictional material is detected, perform A/T fluid cooler cleaning. Refer to AT-15, "A/T Fluid Cooler Cleaning". A/T Fluid Cooler Cleaning
30. Remove magnets from oil pan.
31. Straighten terminal clips to free terminal cord assembly and A/T fluid temperature sensor 2 harness.
32. Disconnect A/T fluid temperature sensor 2 connector.
CAUTION: Do not damage connector.
33. Straighten terminal clips to free revolution sensor harness.
34. Disconnect revolution sensor connector.
CAUTION: Do not damage connector.