Upper Valve Body

Disassembly / Inspection / Assembly

CAUTION:
- Each valve should slide out by its own weight.
- When a valve will not slide out by its own weight, depending on the valve, push it out with a wire or place the valve body open-side down and lightly tap it with a plastic hammer. Never scratch or otherwise damage the valve surface or bore.
- Do not use a magnet to remove or Install parts.
- Do not drop or lose the valves or internal parts.

1. Disassemble in the order shown in the figure, referring to Disassembly Note.
2. Inspect all parts and replace as necessary.
3. Assemble in the reverse order of disassembly, referring to Assembly Procedure.

Disassembly note




Stopper pin

CAUTION: Do not use a magnet to hold the stopper pin.

1. Push the stopper pin out with a wire.
2. Depress and hold the plug or sleeve with a finger to prevent the valve from popping out.
3. Remove the stopper pin, and remove the valve and internal parts.




Retainer

CAUTION: Do not use a magnet to hold the retainer.

1. Push the retainer out with a wire.
2. Hold the inside parts with a finger to prevent the valve from popping out.
3. Remove the retainer, the valve, and the internal parts.




Stopper pin (4-2 sequence valve and 4-2 relay valve)

CAUTION:
- Removal may be difficult.
- Do not use a magnet to hold the stopper pin.

1. Push the stopper pin out with a wire.
2. Depress the plug with a vinyl tape-wrapped 1.5 mm (0,060 in) diameter rod.
3. Remove the stopper pin, the valve, and the internal parts.

Inspection




Springs
1. Measure the spring free length.
2. If not within specification, replace the spring.

Specification:

Specification

Assemble procedure

CAUTION:
- Before assembly, make sure all parts are thoroughly cleaned.
- Apply ATF to all parts and bores.
- Note the proper direction of the valve and internal parts.
- Do not reuse any parts that have been dropped.
- Do not scratch the valve or valve body.
- Wrap a screwdriver or rod with tape before using to insert a valve.







1. Insert the torque converter relief valve and spring.
2. Install the retainer while compressing the spring.




3. Insert the pressure regulator valve, spring, spring seat, plug, and sleeve.




4. Insert the stopper pin while pushing the sleeve.




5. Insert the pressure modifier valve, spring, and plug.
6. Insert the stopper pin while pushing the plug.






NOTE: Align the tab of the sleeve with the plug notch.




7. Insert the accumulator control sleeve and valve.
8. Insert the plug.
9. Insert the stopper pin.




10. Insert the shuttle shift valve D spring, valve, and plug.
11. Insert the stopper pin while pushing the plug.




12. Insert the 4-2 sequence spring, valve, and plug.




13. Push in the plug with a vinyl tape-wrapped 1.5 mm (0,060 in) diameter rod.
14. Insert the stopper pin.




15. Insert the 4-2 relay spring, valve, and plug.




16. Push in the plug with a vinyl tape-wrapped 1.5 mm (0,060 in) diameter rod and insert the stopper pin.




17. Insert shift valve A and spring.
18. Insert shift valve B and spring.
19. Install the retainer while compressing the springs.




20. Insert the overrunning clutch control valve, spring, and plug.
21. Insert the stopper pin while pushing the plug.




22. Insert the overrunning clutch reducing spring, valve, and plug.
23. Insert the stopper pin while pushing the plug.




24. Insert the shuttle shift valve S, plug 2, and plug 1.
25. Insert the stopper pin.




26. Insert the lockup control spring, valve, plug, and sleeve.
27. Insert the stopper pin while pushing the sleeve.




28. Insert the lockup modifier valve and spring.
29. Insert the retainer while pushing the spring.




30. Insert the pilot valve and spring.
31. Insert the retainer while pushing the spring.