Timing Chain Replacement
- Remove engine front cover and oil thrower as previously described. Remove camshaft sprocket nut and lock washer. Note that locating tag on lock washer fits into keyway of camshaft sprocket.
- Camshaft and crankshaft sprockets may now be removed together with timing chain. Ease each wheel forward a fraction at a time using small levers. Note number of packing washers immediately behind crankshaft sprocket.
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- When reassembling original components, the same number of washers should be replaced. If new components have been installed which would disturb alignment of sprockets, thickness of washers will have to be determined.
- To determine washer thickness, place straight edge across sides of camshaft sprocket teeth and measure gap between straight edge and crankshaft gear.
- When replacing timing chain and sprockets, set crankshaft with keyway at TDC and camshaft with keyway at about one o'clock position as viewed from front. Assemble sprockets into timing chain with two marks on sprockets opposite to each other.
- Keep sprockets in this position, engage crankshaft gear keyway with key on crankshaft and rotate camshaft until camshaft sprocket keyway and key are aligned. Push sprockets onto shafts as far as they will go. Secure camshaft gear with lock washer and nut.
- Replace oil thrower with face marked "F" or concave side away from engine.