LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Engine Mechanical - 3.5L - Repair Instructions - On Vehicle) >> Camshaft Timing Chain and Sprocket Replacement >> Installation Procedure

Installation Procedure

WARNING: This page is about a different variant/trim than selected.
NOTE: Always install a NEW camshaft position actuator filter anytime the camshaft actuator is removed.
    Fig 1: View Of Camshaft & Actuator Filter
    GM1608915Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW the camshaft position actuator filter (1) to the end of the camshaft.
    2. Fig 2: View Of Crankshaft Sprocket
    GM760405Courtesy of GENERAL MOTORS CORP.
  2. Install the crankshaft sprocket.
  3. Apply prelube to the crankshaft sprocket thrust surface. Refer to Adhesives, Fluids, Lubricants, and Sealers .
    4. Fig 3: View Of Timing Chain Tensioner & Bolts
    GM1557846Courtesy of GENERAL MOTORS CORP.
  4. Install the timing chain tensioner.
    5. CAUTION: Refer to Fastener Caution .
  5. Install the timing chain tensioner bolts.

    Tighten:  Tighten the bolts to 21 N.m (15 lb ft).

    6. Fig 4: Identifying Tensioner Collapsing Procedure
    GM1557847Courtesy of GENERAL MOTORS CORP.
  6. Using the EN-47719  , fully collapse the tensioner, and place he tensioner retaining pin into the retaining hole (1). See Special Tools .
    7. Fig 5: Identifying Timing Marks & Chain Tensioners
    GM1557849Courtesy of GENERAL MOTORS CORP.
  7. Align the crankshaft timing mark (1) to the timing mark on the bottom of the timing chain tensioner (2).
  8. Hold the camshaft sprocket with the timing chain hanging down and install the timing chain to the crankshaft gear.
  9. Align the timing mark on the camshaft position actuator gear (4) with the timing mark on top of the timing chain tensioner (3).
    10. Fig 6: Identifying Timing Chain & Sprockets
    GM1557851Courtesy of GENERAL MOTORS CORP.
  10. Align the dowel in the camshaft position actuator with the dowel hole in the camshaft.
  11. Install the camshaft position actuator bolts.
    12. Fig 7: Identifying Camshaft Position Actuator & Fasteners
    GM1706684Courtesy of GENERAL MOTORS CORP.
    CAUTION: Use only a Torx Plus® Bit when removing or installing the camshaft position actuator fasteners (1). The Torx Plus® design differs from typical Torx® fastener. Use of a standard Torx® bit on Torx Plus® fasteners may result in a rounded out fastener head or incorrect faster torque.
    NOTE: DO NOT use any type of threadlocking compound on the camshaft position actuator bolts. Usage of a threadlocking compound on the threads could lead to contamination of the camshaft position actuator, possibly resulting in potential damage to the actuator.
  12. Draw the camshaft actuator onto the camshaft using the bolts.

    Tighten:  Tighten the bolts to 16 N.m (12 lb ft).

  13. Remove the retaining pin from the timing chain tensioner in order to make the tensioner active.
  14. Coat the crankshaft and camshaft sprockets with clean engine oil.
  15. Install the engine front cover. Refer to Engine Front Cover Replacement .
scientia non olet · About LEMON Manuals