REMOVAL & INSTALLATION
See Figures 1 through 11
- Disconnect the negative battery cable.
- Follow the procedure for the timing chain cover removal found earlier in this section.
- If the chain is found to be out of specification, remove the camshaft sprocket attaching bolt, and remove the timing chain with the camshaft sprocket.
- Using a gear puller, remove the crankshaft sprocket. Be careful not to damage the crankshaft surface.
- Position a new crankshaft sprocket onto the shaft, then install the sprocket with a suitably-sized socket and a rubber or plastic mallet. Be sure that the sprocket is seated in position.
- Rotate the crankshaft, if needed, until the timing mark is in the 12 o'clock position.
- Situate the timing chain on the camshaft sprocket and hold the camshaft sprocket so that the timing mark is in the 6 o'clock position.
- Align the dark colored links with the dot on the camshaft sprocket, place the timing chain around the crankshaft sprocket with the dark colored link lined up with the dot on the sprocket and install the camshaft sprocket onto the end of the camshaft.
- Using a straightedge, check the alignment of the crankshaft and camshaft timing marks.
- Install the camshaft bolt and washer. Tighten the bolt to 40 ft. lbs. (54 Nm).
- Rotate the crankshaft 2 full revolutions. The timing marks should line up. If the timing marks do not line up, remove the camshaft sprocket and realign it.
- Check the camshaft end-play. With a new thrust plate the specification is 0.005-0.012 inch (0.0127-0.304mm). The old thrust plate specification is 0.012 inch (0.31mm) maximum. If not within these limits install a new thrust plate.
- Install the timing chain snubbers. Tighten the retaining screws to 9 ft. lbs. (12 Nm). Each model year of these engines may use different length bolts, therefore do not use bolts for this component from any other model year engine.
- Install the timing chain cover by using the previous procedures.
- Connect the negative battery cable.