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Home >> GMC >> 2010 >> Acadia SLE, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 181 (Engine Mechanical - 2.8L Or 3.0L - Repair Instructions - Off Vehicle (4 Of 5)) >> Secondary Timing Chain Tensioner Installation - Left 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 left secondary camshaft drive chain tensioner (2) is being installed.
    2. Fig 2: Identifying Special Tools - J 45027
    GM1306382Courtesy of GENERAL MOTORS CORP.
  2. Using the EN 45027:  tool, reset the left secondary camshaft drive chain tensioner plunger.
    3. Fig 3: View Of Plunger & Left Secondary Camshaft Drive Chain Tensioner Body
    GM1306383Courtesy of GENERAL MOTORS CORP.
  3. Install the plunger into the left secondary camshaft drive chain tensioner body.
    4. Fig 4: Identifying Special Tools - EN 46112
    GM1306384Courtesy of GENERAL MOTORS CORP.
  4. Compress the plunger into the body and lock the left secondary camshaft drive chain tensioner by inserting the EN-46112:  pins into the access hole in the side of the left secondary camshaft drive chain tensioner body.
  5. Slowly release pressure on the left secondary camshaft drive chain tensioner. The left secondary camshaft drive chain tensioner should remain compressed.
    6. Fig 5: Identifying Left Secondary Camshaft Drive Chain Tensioner & Gasket
    GM1306386Courtesy of GENERAL MOTORS CORP.
  6. Install a NEW left secondary camshaft drive chain tensioner gasket to the left secondary camshaft drive chain tensioner.
  7. Install the left secondary camshaft drive chain tensioner bolts through the left secondary camshaft drive chain tensioner and gasket.
  8. Ensure the left secondary camshaft drive chain tensioner mounting surface on the left cylinder head does not have any burrs or defects that would degrade the sealing of the NEW left secondary camshaft drive chain tensioner gasket.
    9. Fig 6: View Of Secondary Camshaft Drive Chain Tensioner & Bolts
    GM1852615Courtesy of GENERAL MOTORS CORP.
  9. Place the left secondary camshaft drive chain tensioner into position and loosely install the bolts to the block.
    10. Fig 7: Locating Left Secondary Camshaft Drive Chain Tensioner Gasket Tab
    GM1306387Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to Fastener Caution .
  10. Verify the proper placement of the left secondary camshaft drive chain tensioner gasket tab (1).
    1. First Pass

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

    2. Final Pass

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

    11. Fig 8: View Of Left Secondary Camshaft Drive Chain Tensioner
    GM1852622Courtesy of GENERAL MOTORS CORP.
  11. Release the left secondary camshaft drive chain tensioner by pulling out the EN 46112:  pins and unlocking the tensioner plunger.
  12. Verify the left secondary camshaft drive chain timing mark alignments by referring to Timing Chain Alignment Diagram - Stage One.
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