Timing Chain: Service and Repair

Fig. 8 Aligning Timing Marks:

REMOVAL
1. Remove timing cover as previously outlined.
2. Position No. 1 piston at TDC with marks on camshaft and crankshaft sprockets aligned, Fig. 8.
3. Remove camshaft sprocket and chain. If sprocket does not come off easily, a light blow on lower edge of sprocket should dislodge it.
4. Remove crankshaft sprocket.

Fig. 9 Replacing Timing Chain & Sprockets:

INSTALLATION
1. Install crankshaft sprocket.
2. Apply Molykote or equivalent to sprocket thrust surface.
3. Hold sprocket with chain hanging down and align marks on camshaft and crankshaft sprockets, Fig. 9.
4. Align dowel in camshaft with dowel hole in camshaft sprocket.
5. Draw camshaft sprocket onto camshaft using attaching bolts, then torque bolts to specification, Fig. 9.
6. Lubricate timing chain with engine oil.
7. Install timing cover.