LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Engine Mechanical - 4.8L, 5.3L, & 6.0L (On-Vehicle)) >> Repair Instructions >> Timing Chain and Sprockets Replacement >> Removal Procedure

Removal Procedure

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 Chevrolet Tahoe, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Camshaft Sprocket, Bolt & Timing Chain
    GM63263Courtesy of GENERAL MOTORS CORP.
  1. Remove the oil pump. Refer to Oil Pump, Pump Screen and Deflector Replacement .
  2. Rotate the crankshaft until the timing marks on the crankshaft and the camshaft sprockets are aligned.
    NOTE: Do not turn the crankshaft assembly after the timing chain has been removed in order to prevent damage to the piston assemblies or the valves.
  3. Remove the camshaft sprocket bolts.
  4. Remove the camshaft sprocket and timing chain.
    5. Fig 2: Removing The Crankshaft Sprocket Using J 8433-1, J 41816-2 & J 41558
    GM63189Courtesy of GENERAL MOTORS CORP.
  5. Use the J 8433  the J 41816-2  and the J 41558  in order to remove the crankshaft sprocket.
    6. Fig 3: View Of Crankshaft Sprocket
    GM156150Courtesy of GENERAL MOTORS CORP.
  6. Remove the crankshaft sprocket.
    7. Fig 4: View Of Crankshaft Key & Keyway
    GM156149Courtesy of GENERAL MOTORS CORP.
  7. Remove the crankshaft sprocket key, if required.
  8. Clean and inspect the timing chain and sprockets. Refer to Timing Chain and Sprockets Cleaning and Inspection in Engine Mechanical - 4.8L, 5.3L, and 6.0L Unit Repair.
scientia non olet · About LEMON Manuals