Cleaning
Clean all parts in solvent and dry them with compressed air.
Inspection
Inspect the chain for broken links and the sprockets for cracks, and worn or damaged teeth. Replace all com-ponents of the timing chain and sprocket assembly if any one item needs replacement.
Front oil seal replacement
It is good practice to replace the oil seal each time the cylinder front cover is removed.
1. Drive out the old seal with a pin punch. Clean out
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the recess in the cover.
2. Coat a new seal with grease, then install the seal (Fig. 62). Drive the seal in until it is fully seated in the recess. Check the seal after installation to be sure the spring is properly positioned in the seal.
Installation
1. Position the sprockets and timing chain on the camshaft (Fig. 61). Be sure the timing marks on the sprockets are positioned as shown in Fig. 60.
2. Install the fuel pump eccentric, washers and cam-shaft sprocket cap screw. Torque the sprocket cap
screw to 30-35 lbs. ft. Install the crankshaft front oil slinger (Fig. 63).
3. Clean the cylinder front cover, oil pan and the block gasket surfaces.
4. Coat the gasket surfaces of the block and cover with sealer. Position a new gasket on the block.
5. Install the alignment pilot tool on the cylinder front cover so that the keyway in the pilot aligns with the key in the crankshaft. Position the cover and pilot.
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