GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Isuzu 🢒 2005 🢒 Isuzu - N Series 🢒 Transmission/Transaxle 🢒 Automatic Transmission - 4L80-E/4L85-E 🢒 Overrun Clutch Assembly Disassemble

Tools Required

    • J 38734 Intermediate Spring Compressor Adapter
    • J 23327 Clutch Spring Compressor

    Object Number: 774707 Size: SH
  1. Separate the overdrive carrier assembly (514) from the overrun clutch housing assembly (504).
  2. Remove the overdrive clutch roller assembly (512) from the overrun clutch housing assembly (504).

    3. Object Number: 31112 Size: SH
  3. Remove the overrun clutch backing plate retainer ring (511) from the overrun clutch housing assembly (504).

    4. Object Number: 54673 Size: SH
  4. Remove the overrun clutch backing plate (510) and the overrun clutch plates (508, 509).
  5. Inspect the overrun clutch plates (508-510) for burning, scoring, flaking, pitting, and wear.

    6. Object Number: 31115 Size: SH
  6. Using the J 23327 and the J 38734 , remove the overrun clutch spring assembly (506).
  7. Remove the overrun clutch spring retainer ring (507).
  8. Remove the tools.
  9. Remove the overrun clutch spring assembly (506).
  10. Remove the overrun clutch piston assembly (505).

    11. Object Number: 31116 Size: SH
  11. Inspect the overrun clutch spring assembly (506) for collapsed coils and distortion.
  12. Inspect the overrun clutch piston assembly (505) for cracks and a cut seal.
  13. Inspect the overrun clutch housing assembly (504) for wear, clogged lubrication holes, and damaged thrust surfaces.

Tools Required

    • J 38734 Intermediate Spring Compressor Adapter
    • J 23327 Clutch Spring Compressor

    Object Number: 774707 Size: SH
  1. Separate the overdrive carrier assembly (514) from the overrun clutch housing assembly (504).
  2. Remove the overdrive clutch roller assembly (512) from the overrun clutch housing assembly (504).

    3. Object Number: 31112 Size: SH
  3. Remove the overrun clutch backing plate retainer ring (511) from the overrun clutch housing assembly (504).

    4. Object Number: 54673 Size: SH
  4. Remove the overrun clutch backing plate (510) and the overrun clutch plates (508, 509).
  5. Inspect the overrun clutch plates (508-510) for burning, scoring, flaking, pitting, and wear.

    6. Object Number: 31115 Size: SH
  6. Using the J 23327 and the J 38734 , remove the overrun clutch spring assembly (506).
  7. Remove the overrun clutch spring retainer ring (507).
  8. Remove the tools.
  9. Remove the overrun clutch spring assembly (506).
  10. Remove the overrun clutch piston assembly (505).

    11. Object Number: 31116 Size: SH
  11. Inspect the overrun clutch spring assembly (506) for collapsed coils and distortion.
  12. Inspect the overrun clutch piston assembly (505) for cracks and a cut seal.
  13. Inspect the overrun clutch housing assembly (504) for wear, clogged lubrication holes, and damaged thrust surfaces.