Timing Chain Guide: Service and Repair

REMOVE

- Remove the timing cover. Refer to COMPONENT REPLACEMENT AND REPAIR PROCEDURES / TIMING COVER.
- Fit JD 39 sprocket retainer or equivalent, to the jackshaft.
- Disconnect the timing chain from the camshaft and jackshaft sprockets.
- Withdraw the crankshaft sprocket and timing chain.
- Remove the oil pump securing bolts and remove the oil pump.

CAUTION: Do not rotate the engine while the chain and sprockets are disconnected.

- Remove the timing chain damper/sprocket hanger securing bolts.
- Remove the sprocket hangers and dampers.
- Examine all components for wear and damage. Replace worn or damaged components as necessary.

REFIT
- Fit the replacement dampers and sprocket hangers to the cylinder block. Fit the securing bolts, do not fully tighten at this stage.
- Note the position of JD 39 sprocket retainer tool relative to the jackshaft sprocket and remove tool.

Guide Alignment Tool:

- Position JD 38 Damper Setting Jig on to the front of the cylinder block.
- Fit the damper bolts (finger tight + 1/4 turn).
- Position the sprocket hangers and camshaft dampers so that they are in contact with the jig locating dowels (2). Fully tighten the sprocket hanger/camshaft damper securing bolts.
- Remove JD 38 Damper Setting Jig and refit JD 39 sprocket retainer tool.
- Refit the oil pump.
- Engage the crankshaft sprocket in the timing chain. Fit the sprocket/chain assembly to the camshaft and jackshaft sprockets.
- Remove JD 39 Sprocket Retainer.
- Refit the timing cover.