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Home >> GMC >> 2011 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 103 (Engine Mechanical - 2.8L Or 3.0L - Repair Instructions - Off Vehicle (4 Of 5)) >> Secondary Timing Chain Tensioner Installation - Right Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2010 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Left & Right Secondary Camshaft Drive Chain Tensioner & Primary Camshaft Drive Chain Tensioner
    GM1306381Courtesy of GENERAL MOTORS CORP.
  1. Ensure that the right secondary camshaft drive chain tensioner (1) is being installed.
    2. Fig 2: Identifying Special Tools - J 45027
    GM1306382Courtesy of GENERAL MOTORS CORP.
  2. Using the EN 45027:  tool, reset the right secondary camshaft drive chain tensioner plunger.
    3. Fig 3: View Of Plunger & Right Secondary Camshaft Drive Chain Tensioner Body
    GM1306451Courtesy of GENERAL MOTORS CORP.
  3. Install the plunger into the right secondary camshaft drive chain tensioner body.
    4. Fig 4: Identifying Special Tool - EN 46112
    GM1306452Courtesy of GENERAL MOTORS CORP.
  4. Compress the plunger into the body and lock the right secondary camshaft drive chain tensioner by inserting the EN 46112:  pins into the access hole in the side of the right secondary camshaft drive chain tensioner body.
  5. Slowly release pressure on the right secondary camshaft drive chain tensioner. The right secondary camshaft drive chain tensioner should remain compressed.
    6. Fig 5: Identifying Right Secondary Camshaft Drive Chain Tensioner Gasket
    GM1306453Courtesy of GENERAL MOTORS CORP.
  6. Install a NEW right secondary camshaft drive chain tensioner gasket to the right secondary camshaft drive chain tensioner.
  7. Install the right secondary camshaft drive chain tensioner bolts through the right secondary camshaft drive chain tensioner and gasket.
  8. Ensure the right secondary camshaft drive chain tensioner mounting surface on the right cylinder head does not have any burrs or defects that would degrade the sealing of the NEW right secondary camshaft drive chain tensioner gasket.
    9. Fig 6: View Of Secondary Camshaft Drive Chain Tensioner And Bolts
    GM1854999Courtesy of GENERAL MOTORS CORP.
  9. Place the right secondary camshaft drive chain tensioner into position and loosely install the bolts to the block.
    10. Fig 7: Identifying Right Secondary Camshaft Drive Chain Tensioner Gasket Tab
    GM1306455Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  10. Verify the proper placement of the right secondary camshaft drive chain tensioner gasket tab (1).
    1. First Pass

      Tighten the right secondary camshaft drive chain tensioner bolts to 5 N.m (44 lb in) .

    2. Final Pass

      Tighten the right secondary camshaft drive chain tensioner bolts to 25 N.m (18 lb ft) .

    11. Fig 8: Identifying Right Camshaft Drive Chain Tensioner
    GM1855001Courtesy of GENERAL MOTORS CORP.
  11. Release the right camshaft drive chain tensioner by pulling out the EN 46112:  pins and unlocking the tensioner plunger.
    12. CAUTION: Ensure that all timing chain tensioners are completely released. A timing chain tensioner that is not properly released can lead to serious engine damage.
  12. Verify all primary and secondary camshaft drive chain timing mark alignments. Refer to Timing Chain Alignment Diagram - Stage Two.
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