GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2009
🢒
Express - AWD
🢒
Transmission
🢒
Automatic Transmission - 4L80-E/4L85-E
🢒 Overrun Clutch Assembly Disassemble
Special Tools
•
J 38734
Intermediate Spring Compressor Adapter
•
J 23327
Clutch Spring Compressor
For equivalent regional tools, refer to
Special Tools
.
Separate the overdrive carrier assembly (514) from the overrun clutch housing assembly (504).
Remove the overdrive clutch roller assembly (512) from the overrun clutch housing assembly (504).
Remove the overrun clutch backing plate retainer ring (511) from the overrun clutch housing assembly (504).
Remove the overrun clutch backing plate (510) and the overrun clutch plates (508, 509).
Inspect the overrun clutch plates (508-510) for burning, scoring, flaking, pitting, and wear.
Using the
J 23327
spring compressor and the
J 38734
spring compressor adapter , remove the overrun clutch spring assembly (506).
Remove the overrun clutch spring retainer ring (507).
Remove the tools.
Remove the overrun clutch spring assembly (506).
Remove the overrun clutch piston assembly (505).
Inspect the overrun clutch spring assembly (506) for collapsed coils and distortion.
Inspect the overrun clutch piston assembly (505) for cracks and a cut seal.
Inspect the overrun clutch housing assembly (504) for wear, clogged lubrication holes, and damaged thrust surfaces.