Timing Belt Removal

Special Tools

• EN-6333  Locking Pin
• EN-6340  Locking Tool

For equivalent regional tools, refer to Special Tools .

Fig 1: Aligning Timing Belt Drive Gear And Oil Pump Housing
Courtesy of GENERAL MOTORS COMPANY
NOTE:

The timing belt drive gear and oil pump housing must align.

1. Turn the crankshaft in the direction of engine rotation, by the crankshaft balancer bolt, to cylinder 1 TDC of combustion stroke.
Fig 2: 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.

2. Prepare the right half of the EN-6340  locking tool.
   1. Remove the 2 bolts (2).
   2. Detach the front panel (1) from the EN-6340  locking tool - right.
Fig 3: Spot Type Markings And Special Tool
Courtesy of GENERAL MOTORS COMPANY
NOTE:
• The spot type marking (4) on the intake camshaft adjuster does not correspond to the groove of the EN-6340  locking tool - left (1) during this process, but must be somewhat above.
• The spot type marking (3) on the exhaust camshaft adjuster must correspond to the groove on EN-6340  locking tool - right (2).
3. Insert the EN-6340  locking tool - left (1) and the EN-6340  locking tool - right (2) in the camshaft adjuster.
Fig 4: Drive Belt Tensioner, Allen Key And Locking Pin
Courtesy of GENERAL MOTORS COMPANY
4. Install the EN-6333  locking pin (3), apply tension to the timing belt tension roller (2) in the direction of the arrow, using an Allen key (1).
5. Stop the timing belt tensioner.
Fig 5: Timing Belt And Timing Belt Tensioner
Courtesy of GENERAL MOTORS COMPANY
NOTE:

Observe direction of rotation.

6. Remove the timing belt (1).