GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Firefly (Canada) 🢒 Engine 🢒 Engine Mechanical - 1.3L 🢒 Crankshaft Rear Oil Seal and Housing Replacement

Removal Procedure
  1. Remove the transaxle from the vehicle. Refer to Transaxle Replacement in Automatic Transmission/Transaxle or to Transaxle Replacement in Manual Transmission/Transaxle.
  2. Remove the pressure plate assembly and the clutch disc (manual transmission equipped vehicles). Refer to Clutch.
  3. Mark the flywheel-to-engine position.
  4. Remove the following components from the crankshaft:
    5. • Six flywheel retaining bolts
    • The flywheel

    Object Number: 261773 Size: SH
  5. Remove the five rear main seal housing bolts.
  6. Remove the rear main seal housing.

    7. Object Number: 261715 Size: SH
  7. Using a hammer and a drift, carefully remove the rear main seal (1) from the rear main seal housing (2).
  8. Carefully install the new rear main seal into the rear main seal housing with a hammer. Tap the rear main oil seal into place so that the end face is flush with the housing seal end face.

Installation Procedure

    Object Number: 261773 Size: SH
  1. Install the rear main seal housing onto the cylinder block with a new gasket.

    2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  2. Secure the rear main seal housing with five bolts.

    3. Tighten
    Tighten the five rear main seal housing bolts to 11 N·m (8 lb ft).


    Object Number: 261691 Size: SH
  3. After the rear main seal housing has been torqued to specifications, trim any excess gasket material from the oil pan rail.

    4. Object Number: 261694 Size: SH
  4. Install the flywheel to the engine crankshaft.

    5. Notice: Apply the proper amount of the sealant to the fastener when assembling this component. Excessive use of the sealant can prohibit the component from being assembled properly or allow the fastener to loosen. A component or fastener that is not assembled properly can loosen or fall off leading to extensive engine damage.

  5. Apply GM P/N 12345493 or equivalent, to the flywheel retaining bolt threads.
  6. Install the flywheel and secure the flywheel with six flywheel retaining bolts.

    7. Tighten
    Automatic Transmission: Tighten the six flywheel retaining bolts to 95 N·m (69 lb ft).

    Tighten
    Manual Transmission: Tighten the six flywheel retaining bolts to 78 N·m (57 lb ft).

  7. Install the pressure plate assembly and the clutch disc (manual transaxle equipped vehicles only). Refer to Clutch.
  8. Install the transaxle to the vehicle. Refer to Transaxle Replacement in Automatic Transmission/Transaxle or to Transaxle Replacement in Manual Transmission/Transaxle.