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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Engine Mechanical - 3.9L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Timing Chain and Sprockets Replacement >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Timing Marks & Chain Tensioners
    GM1557849Courtesy of GENERAL MOTORS CORP.
  1. Remove the engine front cover. Refer to Engine Front Cover Replacement .
  2. Align the crankshaft timing mark (1) to the timing mark on the bottom of the timing chain tensioner (2).
  3. Align the timing mark on the camshaft gear (3) with the timing mark on top of the timing chain tensioner (4).
  4. Fig 2: View Of Timing Chain & Sprockets
    GM1557703Courtesy of GENERAL MOTORS CORP.
  5. Remove the camshaft sprocket bolts.
  6. Remove the timing chain, camshaft and crankshaft sprockets.
  7. Fig 3: View Of Timing Chain Tensioner & Bolts
    GM1557708Courtesy of GENERAL MOTORS CORP.
  8. Remove the timing chain tensioner bolts.
  9. Remove the timing chain tensioner.
  10. Fig 4: View Of Camshaft & Actuator Filter
    GM1608915Courtesy of GENERAL MOTORS CORP.
  11. Remove and discard the camshaft position actuator filter (1) from the end of the camshaft.