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Home >> GMC >> 2003 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different car >> Section 521 (Engine Mechanical (Repair Instructions -- 2 Of 3) -- 4.8L, 5.3L & 6.0L) >> Repair Instructions (Off-Vehicle - Part 2) >> Engine Front Cover Cleaning and Inspection

Engine Front Cover Cleaning and Inspection

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    IMPORTANT:
    • Do not use the crankshaft oil seal again. Install a NEW crankshaft oil seal during assembly.
    • Do not use the front cover-to-engine block gasket again. Install a NEW gasket during assembly.
  1. Remove the crankshaft oil seal (140) from the front cover.
    2. Fig 1: View Of Crankshaft Front Oil Seal
    GM1272843Courtesy of GENERAL MOTORS CORP.
  2. Clean the cover in solvent. Remove the sealant from the cover oil pan surface. Refer to Replacing Engine Gaskets .
    3. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  3. Dry the cover with compressed air.
  4. Inspect the gasket sealing surfaces for excessive scratches or gouging.
  5. Inspect the cover-to-oil pan threaded bolt holes for damaged threads or debris.
  6. Inspect the crankshaft oil seal mounting bore for damage.
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