GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Chevy P12 Chassis 🢒 Engine 🢒 Engine Mechanical - 7.4L 🢒 Crankshaft Front Cover Oil Seal Replacement

Removal Procedure

Tools Required

J 22102 Seal Installer

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.

    2. Object Number: 67878 Size: SH
  2. Raise the vehicle and support with safety stands. Refer to Lifting and Jacking the Vehicle in General Information.
  3. Remove the fan shrouds from the radiator. Refer to Fan Shroud Replacement in Engine Cooling.
  4. Remove the drive belt form the vehicle. Refer to Drive Belt Replacement in Engine Cooling.
  5. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .

    6. Important: Do not damage the engine front cover or the crankshaft sealing area when removing the crankshaft front cover oil seal.

  6. Remove the crankshaft front cover oil seal from the engine front cover.

Installation Procedure

Tools Required

J 22102 Seal Installer

  1. Coat the crankshaft front cover oil seal with clean engine oil.

    2. Object Number: 67878 Size: SH
  2. Use the J 22102 to install the crankshaft front cover oil seal.
  3. Remove the J 22102 from the crankshaft front cover oil seal.
  4. Install the crankshaft balancer to the crankshaft. Refer to Crankshaft Balancer Replacement .
  5. Remove the safety stands and lower the vehicle.
  6. Install the drive belt on the vehicle. Refer to Drive Belt Replacement in Engine Cooling.
  7. Install the fan shrouds on the radiator. Refer to Fan Shroud Replacement in Engine Cooling.

    8. Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  8. Connect the negative battery cable.