Overrun Clutch and Turbine Shaft
Overrun Clutch and Turbine Shaft
Disassembled view
Disassembly
1. Position overrun clutch assembly upright, using the overdrive internal gear as a support.
- Remove snap ring (1).
2. Remove overdrive carrier assembly (2), sun gear (3) and turbine shaft (4).
3. Remove snap ring (5), backing plate (6), and clutch plates (7).
4. Compress diaphragm spring with the J-23327-91 compressor then remove snap ring (8).
5. Remove overrun roller clutch cam (9) and roller clutch assembly (10).
6. Remove overrun clutch release spring retainer (11) and diaphragm spring (12).
7. Remove piston assembly (13) from overrun clutch drum (14).
8. Remove turbine shaft seal rings (15).
Inspection and Repair
Overdrive Carrier Check
- Check pinion end play with a feeler gauge.
Clearance: 0.24 mm - 0.64 mm (0.0094 inch - 0.025 inch)
If clearance is outside specified value, replace overdrive carrier assembly.
Visual Check:
If any damage, deformation or wear is found, replace the damaged part.
Reassembly
1. Install turbine shaft seal rings (15) with grease (petroleum jelly).
2. Install the J-38555 inner installer on the drum (14).
- Pre-install piston assembly into J-38555 outer installer.
- Install overrun clutch piston assembly (13). Use the outer installer while pushing piston into drum (14).
- Remove the installer.
3. Install diaphragm spring (12).
4. Install overrun clutch release spring retainer (11) (lip faces upwards), overrun roller clutch assembly (10) and cam (9).
5. Place snap ring loosely on spring retainer.
- Hold the J-23327-91 compressor in a vise and compress piston return spring with compressor.
- Set snap ring (8) in ring groove.
- Remove the compressor.
6. Install clutch plates (7), start with steel plate and alternate with lined plates.
7. Install backing plate (6).
8. Install snap ring (5).
9. Install overdrive sun gear with countersink pointing downwards.
10. Install the overdrive carrier assembly (2).
Note: Turn the assembly in a counter-clockwise direction only until roller clutch enters the outer race. After Installation, rotate the assembly and listen for loose rollers.
11. Install turbine shaft (4) and snap ring (1).