GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2002 🢒 Astro - 4WD 🢒 Driveline/Axle 🢒 Transfer Case - NVG 136-NP4 (One Speed Automatic) 🢒 Front Output Shaft Seal Replacement

Tools Required

    • J 44636-1 Front Output Shaft Seal Installer
    • J 44636-2 Front Output Shaft Seal Protector

Removal Procedure

    Object Number: 660273 Size: SH
  1. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Remove the transfer case shield. Refer to Transfer Case Shield Replacement .
  3. Remove the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  4. Remove the transfer case front output shaft dust seal.

    5. Object Number: 660275 Size: SH
  5. Remove the transfer case front output shaft seal.

Installation Procedure

    Object Number: 660276 Size: SH
  1. Install the J 44636-2 on the transfer case front output shaft.

    2. Object Number: 660278 Size: SH
  2. Install the transfer case front output shaft seal on the J 44636-2 .

    3. Object Number: 660279 Size: SH
  3. Using the J 44636-1 , install the transfer case front output shaft seal.
  4. Remove the J 44636-1 from the transfer case front output shaft.

    5. Object Number: 660276 Size: SH
  5. Remove the J 44636-2 from the transfer case front output shaft.

    6. Object Number: 660273 Size: SH
  6. Install the transfer case front output shaft dust seal.
  7. Install the front propeller shaft. Refer to Front Propeller Shaft Replacement in Propeller Shaft.
  8. Check the transfer case fluid level. Refer to Transfer Case Fluid Replacement .
  9. Install the transfer case shield. Refer to Transfer Case Shield Replacement .
  10. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.