Part 1
DISASSEMBLY
1. Drain ATF through drain plug.
2. Remove torque converter.
3. Check torque converter one-way clutch using check tool as shown at left.
a. Insert check tool into the groove of bearing support built into one-way clutch outer race.
b. When fixing bearing support with check tool, rotate one- way clutch spline using screwdriver.
c. Check that inner race rotates clockwise only. If not, replace torque converter assembly.
4. Remove oil charging pipe and oil cooler tube.
5. Set manual lever to park position.
6. Remove inhibitor switch.
7. Remove oil pan and oil pan gasket.
- Do not reuse oil pan bolts.
8. Analyze foreign materials in oil pan to trace possible causes of malfunction. If the 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 which can cause valves, servo, and clutches to stick and may inhibit pump pressure.
- If frictional material is detected, replace radiator after repair of A/T.
9. Remove control valve assembly according to the following procedures.
a. Remove control valve assembly mounting bolts.
b. Remove stopper ring from terminal body.
c. Push terminal body into transmission case and draw out terminal cord assembly harness.
10. Remove manual valve from control valve assembly.
11. Remove return spring from servo release accumulator piston.
12. Remove servo release accumulator piston with compressed air.
13. Remove 0-rings from servo release accumulator piston.
14. Remove N-D accumulator piston and return spring with compressed air.
15. Remove 0-rings from N-D accumulator piston.
16. Check accumulator pistons and contact surface of transmission case for damage.
17. Check accumulator return springs for damage and free length.
18. Remove lip seals.
19. Remove tube and sleeve.
20. Remove converter housing according to the following procedures.
a. Remove converter housing mounting bolts.
b. Remove converter housing by tapping it lightly.
c. Remove O-ring from differential oil port.
21. Remove final drive assembly from transmission case.
22. Remove differential side bearing outer race from transmission case.
23. Remove differential side bearing adjusting shim from trans mission case.
24. Remove differential side bearing outer race from converter housing.
25. Remove oil seal with screwdriver from converter housing.
- Be careful not to damage case.
26. Remove oil tube from converter housing.
27. Remove oil pump according to the following procedures.
a. Remove 0-ring from input shaft.
b. Remove oil pump assembly, baffle plate and gasket from transmission case.
c. Remove thrust washer and bearing race from oil pump assembly.
28. Remove brake band according to the following procedures.
a. Loosen lock nut, then back oft band servo anchor end pin.
b. Remove brake band and strut 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 in the figure at left.
Leave the clip in position after removing the brake band.
c. Check brake band facing for damage, cracks, wear or burns.
29. Remove input shaft assembly (high clutch), reverse clutch and front sun gear according to the following procedures.
a. Remove input shaft assembly (high clutch) with reverse clutch.
b. Remove input shaft assembly (high clutch) from reverse clutch.
c. Remove needle bearings from high clutch drum and check for damage or wear.
d. Remove high clutch hub and front sun gear from transmission case.
e. Remove front sun gear and needle bearing from high clutch hub and check for damage or wear.
f. Remove bearing race from front sun gear and check for damage or wear.
30. Remove needle bearing from transmission case and check for damage or wear.
31. Apply compressed air and check to see that low and reverse brake operates.
32. Remove low one-way clutch and front planetary carrier assembly according to the following procedures.
a. Remove snap ring with flat-bladed screwdriver.
b. Remove low one way clutch with a hook made of wire.
c. Remove snap ring with flat-bladed screwdriver.
d. Remove front planetary carrier with low and reverse brake piston and retainer.
e. Remove low and reverse brake spring retainer.
- Do not remove return springs from spring retainer.
f. Check that low one-way clutch rotates in the direction of the arrow and locks in the opposite direction.
g. Remove needle bearing, low and reverse brake piston and retainer from front planetary carrier.
h. Check front planetary carrier, low one-way clutch and needle bearing for damage or wear.
i. Check clearance between planetary gears and planetary carrier with feeler gauge.
Standard clearance: 0.20- 0.70 mm (0.0079 - 0.0276 in)
Allowable limit: 0.80 mm (0.0315 in)
Replace front planetary carrier if the clearance exceeds allowable limit.