Removal

Disassembled Upper Engine:

Legend:

REMOVE OR DISCONNECT

NOTE: Prior to removing the timing chain read the entire procedure.

1. Engine front cover.
2. Crankshaft oil slinger.

Timing Chain Timed Position:

3. Rotate crankshaft clockwise (as viewed from front of engine / normal rotation) until the camshaft sprockets timing dowel pin holes line up with the holes in the timing chain housing.
- The mark on the crankshaft sprocket should line up with the mark on the cylinder block.
- The crankshaft sprocket keyway should point upwards and line up with the centerline of the cylinder bores.
- This is the "Timed" position.
4. Three timing chain guides.
5. Raise vehicle.

Tensioner Spring And Retainer:

6. Timing chain tensioner shoe retainer.
7. Make sure all the slack in the timing chain is above the tensioner assembly, then remove the chain tensioner shoe.

The timing chain must be disengaged from the wear grooves in the tensioner shoe in order to remove the shoe. Slide a screwdriver blade under the timing chain while pulling shoe outward.

If difficulty is encountered in removing chain tensioner shoe, proceed as follows:
- Lower vehicle.
- Hold intake camshaft sprocket with tool J 36013 or equivalent and remove the sprocket bolt and washer.
- Remove the washer from the bolt and rethread the bolt back into the camshaft by hand (the bolt provides a surface to push against).
- Remove intake cam sprocket using a three-jaw puller in the three relief holes in the sprocket.

NOTE: Do not attempt to pry sprocket off camshaft or damage to the sprocket or chain housing could occur.

8. Tensioner assembly retaining bolts and tensioner.

CAUTION: Tensioner piston is spring loaded and could come out causing personal injury.

Timing Chain Housing Fasteners:

9. Chain housing to block stud (timing chain tensioner shoe pivot).
10. Timing chain.
11. Inspect parts for wear, replace as required.Some scoring of the timing chain shoe and guides is normal.