Camshaft Position Actuator Adjuster Removal

Special Tools

• EN-6340  Camshaft Adjuster Locking Tool
• EN-6628-A  Camshaft Locking Tool

For equivalent regional tools, refer to Special Tools .

1. Prepare the right half of the EN-6340  locking tool.
   Fig 1: View Of Front Panel And Bolts

   Courtesy of GENERAL MOTORS COMPANY
   NOTE: The right half of the EN-6340  locking tool can be recognized by the lettering "right", arrow, on the tool.
   1. Remove the 2 bolts (2).
   2. Remove the front panel (1) from the EN-6340  locking tool - right.
2. Install the EN-6340  locking tool into the camshaft adjusters.
   Fig 2: Spot Type Markings And Locking Tool

   Courtesy of GENERAL MOTORS COMPANY
   • Install the EN-6340  locking tool - left (1) into the camshaft adjusters as shown.
     NOTE: The spot type marking (4) on the intake camshaft adjuster does not correspond to the groove of EN-6340  locking tool - left during this process but must be somewhat above as shown.
   • Install EN-6340  locking tool - right (2) into the camshaft adjusters as shown.
     NOTE: The spot type marking (3) on the exhaust camshaft adjuster must correspond to the groove on EN-6340  locking tool - right.
3. Turn the camshaft by the hexagon until the groove on the end of the camshafts is horizontal.
   Fig 3: Aligning Camshafts Horizontally

   Courtesy of GENERAL MOTORS COMPANY
   NOTE: Note the arrows.
4. Install the EN-6628-A  locking tool (1).
   Fig 4: Locking Tool

   Courtesy of GENERAL MOTORS COMPANY
5. Remove the camshaft position actuator adjuster closure bolt (1) of the intake camshaft position actuator adjuster and/or the exhaust camshaft position actuator adjuster (3).
   Fig 5: Camshaft Position Actuator Adjuster Closure Bolt

   Courtesy of GENERAL MOTORS COMPANY
6. Remove and DISCARD the intake camshaft position actuator adjuster bolt and/or the exhaust camshaft position actuator adjuster bolt (2).
   NOTE: A second technician is required.
   NOTE: Use an appropriate open-end wrench in order to counterhold the camshaft hexagon. A thin cross-section wrench is required for a better fit. The usage of EN-6628-A  locking tool is for the camshaft adjustment to prevent misalignment of the camshafts. The wrench is required to counterhold the camshafts during bolt torque procedure.
7. Remove the intake camshaft position actuator adjuster and/or the exhaust camshaft position actuator adjuster (3).