Primary Camshaft Drive Chain Tensioner Replacement

Primary Camshaft Drive Chain Tensioner Replacement

^ Tools Required
- J 42038 Camshaft Holding Fixture
- J 43032 Crankshaft Rotation Socket

Removal Procedure
1. Remove the camshaft covers.
2. Rotate the crankshaft to TDC of the # 1 cylinders compression stroke using the J 43032, the flats machined into the rear of the camshafts should be parallel and facing the cylinder head.

Caution: The camshaft holding tool must be installed on the camshaft in Cautions and Notices.





3. Install the J 42038 to the rear of the camshafts on the left and right cylinder heads.
4. Remove the engine front cover.





5. Loosen both primary timing chain tensioner bolts.
6. Remove the lower primary timing chain tensioner bolt allowing the tensioner to swing downward and expand. This will release tension on the primary drive chain.
7. Remove the upper tensioner bolt.
8. Remove the primary drive chain tensioner (1).

Installation Procedure





1. Collapse the primary timing chain tensioner using the following procedure:
1.1. Rotate the ratchet release lever (2) counterclockwise and hold.
1.2. Collapse the tensioner shoe (1) and hold.
1.3. Release the ratchet lever and slowly release the pressure on the shoe.
2. As the ratchet lever moves to its first click, hold the tensioner shoe inward. Insert a pin through the hole in the release lever.
3. The locked ratchet mechanism should hold the shoe in a collapsed position.

Notice: Refer to Fastener Notice in Service Precautions.

Important: Ensure the tensioner release lever is facing outward before tightening.





4. Install the primary timing chain tensioner (1) and retaining bolts.
Tighten the primary timing chain tensioner bolts to 25 Nm (18 ft. lbs.).
5. Ensure the crankshaft is at TDC of the # 1 cylinders compression stroke.





6. Remove the pin holding the tensioner to tighten any slack in the timing chain.
7. Verify correct timing chain and timing mark alignments
8. Install the engine front cover.





9. Remove the J 42038 from the camshafts on the left and right cylinder heads.
10. Install the camshaft covers.