Disassembly

1. Check operation of one-way clutch in clutch drum. Hold drum and turn planetary shaft clockwise and counterclockwise. Shaft should turn clockwise freely but lock when turned counterclockwise. Replace one-way clutch if necessary.
2. Replace overdrive brake clutch pack if any discs are worn below 1.84 mm (0.0724 inch) thickness. This is clutch pack that fits in case and over clutch drum.





3. Remove overdrive clutch from planetary gear.





4. Remove thrust bearing and race assembly from clutch drum.
5. Measure stroke length of overdrive clutch piston as follows:





a. Mount oil pump on torque converter. Then mount clutch on oil pump.





b. Mount dial indicator on clutch and position indicator stylus on clutch piston.
c. Apply compressed air through clutch feed hole in oil pump and note piston stroke length. Stroke length should be 1.85 - 2.15 mm (0.0728 - 0.0846 inch).
6. Replace clutch pack if stroke length is incorrect.





7. Remove clutch pack snap ring and remove the clutch pack.





8. Compress piston return spring with Tool 7538, or equivalent. Remove snap ring and remove compressor tool.
9. Remove compressor tool and piston return springs.





10. Mount oil pump on converter. Then mount clutch on oil pump.
11. Hold clutch piston by hand and apply compressed air through oil pump feed hole to ease piston out. Apply only enough air pressure to remove piston.





12. Remove bearing and race from ring gear.





13. Remove snap ring from ring gear and remove ring gear hub.





14. Remove race from planetary gear.





15. Remove snap ring and remove retaining plate.





16. Remove one-way clutch and outer race as assembly. Then separate race from clutch.





17. Remove thrust washer.
18. Measure overdrive clutch disc thickness. Minimum allowable thickness is 1.84 mm (0.0724 inch). Replace clutch pack if any disc is below specified thickness.





19. Measure free length of piston return springs with springs in retainer. Length should be 16.8 mm (0.661 inch). Replace spring and retainer assembly if necessary.





20. Check clutch piston check ball. Shake piston to see if ball moves freely. Then check ball sealing by applying low pressure compressed air to ball inlet as shown. Air should not leak past check ball.





21. Check inside diameter of clutch drum bushings with bore gauge or inside micrometer. Maximum inside diameter is 27.11 mm (1.0673 inch). Replace drum if bushing inside diameter is greater than specified.





22. Check inside diameter of planetary gear bushing. Maximum inside diameter is 11.27 mm (0.4437 inch). Replace planetary gear if bushing inside diameter is greater then specified.