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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1394 (Engine Mechanical - 4.3L) >> Repair Instructions - Off Vehicle >> Crankshaft Rear Oil Seal and Housing Installation >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Locating Crankshaft Rear Oil Seal Housing Retainer Stud
    GM334326Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  1. Install the crankshaft rear oil seal housing retainer stud and tighten to 6 N.m (53 lb in).
    2. Fig 2: Identifying Crankshaft Rear Oil Seal Housing Gasket
    GM334319Courtesy of GENERAL MOTORS CORP.
    NOTE: Always use a NEW crankshaft rear oil seal housing gasket when installing the crankshaft rear oil seal housing.
  2. Install the NEW crankshaft rear oil seal housing gasket.
    3. Fig 3: View Of Crankshaft Rear Oil Housing
    GM1700100Courtesy of GENERAL MOTORS CORP.
  3. Install the crankshaft rear oil housing onto the crankshaft rear oil seal housing retainer stud.
  4. Install the crankshaft rear oil seal housing nut and bolts and tighten to 12 N.m (106 lb in).
    5. Fig 4: Identifying Crankshaft Rear Oil Seal
    GM1700105Courtesy of GENERAL MOTORS CORP.
    NOTE: Notice the direction of the rear oil seal. The new design seal is a reverse style as opposed to what has been used in the past. "THIS SIDE OUT" has been stamped into the seal as shown in the graphic.
  5. Inspect the J 35621-B:  installer flange for imperfections that may damage the crankshaft rear oil seal. Minor imperfections may be removed with a fine grade emery cloth.
  6. Clean the crankshaft sealing surface with a clean, lint free towel. Inspect the lead-in edge of the crankshaft for burrs or sharp edges that could damage the rear main oil seal. Remove the burrs or sharp edges with a fine grade emery cloth before proceeding.
    7. NOTE: Do not apply or use any oil lubrication on the crankshaft rear oil seal or seal installer. Do not touch the sealing lip of the oil seal once the protective sleeve is removed.
  7. Carefully remove the protection sleeve from the NEW crankshaft rear oil seal.
    8. Fig 5: Identifying Crankshaft Rear Oil Seal
    GM1700109Courtesy of GENERAL MOTORS CORP.
  8. Install the crankshaft rear oil seal onto the J 35621-B:  installer.
  9. Install the J 35621-B:  installer onto the rear of the crankshaft and hand tighten the tool bolts until snug.
    10. CAUTION: Refer to Fastener Caution .
  10. Install the crankshaft rear oil seal onto the crankshaft and into the crankshaft rear oil seal housing.
    1. Turn the J 35621-B:  installer wing nut clockwise until the crankshaft rear oil seal is installed near to flush and square to the crankshaft rear oil seal housing. Increased resistance will be felt when the crankshaft rear oil seal has reached the bottom of the crankshaft rear oil seal housing bore.
    2. Turn the J 35621-B:  installer wing nut counterclockwise to release the J 35621-B:  installer from the crankshaft rear oil seal.
  11. Remove the J 35621-B:  installer from the crankshaft.
  12. Wipe off any excess engine oil with a clean rag.
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