Overrun Clutch and Turbine Shaft

OVERRUN CLUTCH AND TURBINE SHAFT






Disassembly steps
1. Snap ring (Fig. 7A-88)
^ Position overrun clutch assembly upright, using the overdrive internal gear as a support.
^ Remove snap ring.
2. Overdrive carrier assembly
3. Sun gear
4. Turbine shaft
5. Snap ring
6. Backing plate
7. Clutch plates






8. Snap ring (Fig. 7A-89)
^ Compress piston return spring with compressor.
Compressor: J-23327-91
9. Overrun roller clutch cam
10. Roller clutch assembly
11. Overrun clutch release spring retainer
12. Diaphragm spring
13. Piston
14. Overrun clutch drum
15. Turbine shaft seal rings






INSPECTION AND REPAIR
Overdrive carrier check (Fig. 7A-90)
^ Check pinion end play with a feeler gage.
Clearance mm (in) 0.24-0.64 (0.0094-0.025)
If clearance is outside specified value, replace overdrive carrier assembly.


Visual check
^ If any damage, deformation or local wear is found in a snap ring, diaphragm spring, or spring retainer, roller clutch assembly, turbine shaft, piston or clutch plates, replace it.






REASSEMBLY
15. Turbine shaft seal rings (Fig. 7A-91)
^ Install seals with grease (petroleum jelly).
14. Overrun clutch drum











13. Piston (Fig. 7A-92, 7A-93)
^ Install the inner installer on the drum.
^ Pre-install piston into outer installer.
^ Install overrun clutch piston assembly. Use the outer installer while pushing piston into drum. Installer: J-38555
12. Diaphragm spring
11. Overrun clutch release spring retainer
10. Roller clutch assembly
9. Overrun roller clutch cam
8. Snap ring
^ Place snap ring loosely on overrun roller clutch cam.
^ Hold the compressor in a vise. Compress piston return spring with compressor.
^ Set snap ring in ring groove. Compressor: J-23327-91
7. Clutch plates
^ Install clutch plates, start with steel plate and alternate with lined plates.
6. Backing plate
5. Snap ring
4. Turbine shaft
3. Sun gear
^ Overdrive sun gear, countersink pointing downwards.
2. Overdrive carrier assembly
^ Complete overdrive carrier assembly.

NOTE: Turn the assembly in a counter-clockwise direction only until roller clutch enters the outer race. After assembly, rotate the assembly and listen for loose rollers.
1. Snap ring