Overrun Clutch Assembly Disassemble

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2006 GMC Yukon XL, 2006 GMC Sierra, 2006 GMC Savana Special, 2006 GMC Savana Camper Special, and 2006 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 38734 Intermediate Spring Compressor Adapter. See Special Tools .
J 23327 Clutch Spring Compressor. See Special Tools .

Separate the overdrive carrier assembly (514) from the overrun clutch housing assembly (504).

Fig 1: Separating Overdrive Carrier Assembly From Overrun Clutch Housing Assembly
Courtesy of GENERAL MOTORS CORP.
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).

Fig 2: View Of Overrun Clutch Backing Plate Retainer Ring
Courtesy of GENERAL MOTORS CORP.
Remove the overrun clutch backing plate (510) and the overrun clutch plates (508, 509).

Fig 3: Identifying Inspection Areas On Overrun Clutch Plates
Courtesy of GENERAL MOTORS CORP.
Inspect the overrun clutch plates (508-510) for burning, scoring, flaking, pitting, and wear.
Using the J 23327 and the J 38734 , remove the overrun clutch spring assembly (506). See Special Tools .

Fig 4: View Of Overrun Clutch Spring & Piston Assembly
Courtesy of GENERAL MOTORS CORP.
Remove the overrun clutch spring retainer ring (507).
Remove the tools.
Remove the overrun clutch spring assembly (506).

Fig 5: Locating Inspection Areas On Overrun Clutch Spring Assembly
Courtesy of GENERAL MOTORS CORP.
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.