Timing Chain: Service and Repair

REMOVE OR DISCONNECT
Tools required:
J5825 crankshaft sprocket remover
J559O crankshaft sprocket installer
1. Timing cover.
2. Place #1 piston at top dead center with the marks on the camshaft and crankshaft sprockets aligned.
3. Camshaft sprocket and chain.

CAUTION If the sprocket does not come off easily, a light blow on the lower edge of the sprocket (with a plastic mallet) should dislodge the sprocket.

4. Crankshaft sprocket with Tool J5825.

INSTALL OR CONNECT
1. Crankshaft sprocket with Tool J5590.
2. Apply Molykote or equivalent to the sprocket thrust surface.
3. Hold the sprocket with the chain hanging down and align the marks on the camshaft and crankshaft sprockets.
4. Align dowel in camshaft with dowel hole in camshaft sprocket.
5. Draw the camshaft sprocket onto camshaft using the mounting bolts.
Tighten
^ Bolts to 20-27 Nm (15-20 ft. lb.)
6. Lubricate timing chain with engine oil.
7. Timing cover.
Tighten
^ M8X1.25 Bolts to 18-24 Nm (13-18 ft. lb.)
^ M10X1.5 Bolts to 27-41 Nm (20-30 ft. lb.)