Tools Required

J 38613-A Camshaft Timing Clamps

1. Ensure that the camshaft sprockets rotate freely on the camshafts.

Notice: Ensure that the bolt hole is free of any debris before installing the J 38613-A or the camshaft carrier may be damaged.

2. Install the J 38613-A on both camshaft carriers.



3. Rotate the crankshaft so that the #1 cylinder is at TDC.



4. Align the timing mark with the cast arrow at the upper right of the crankshaft. Mark the timing indicator with white paint (or equivalent) on the crankshaft and front cover.

Tighten
Tighten both right hand (rear bank) camshaft sprockets to 130 N·m (96 lb ft).

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

5. Remove the J 38613-A from the right rear camshaft carrier.
6. Rotate the crankshaft 360° and align the timing marks.
7. Ensure that both right (rear) camshaft flats are down.

Tighten
Tighten both left hand (front bank) camshaft sprockets to 130 N·m (96 lb ft).

8. Remove the J 38613-A from the left (front) camshaft carrier.
9. Rotate the crankshaft 720° in order to set the timing belt tension and verify correct timing.
10. Ensure that both camshaft flats are up on one bank and down on the opposing bank.