Removing
Removing the oil pump drive clutch from the crankshaft
1. Remove the drive chain cover.
2. Using paint, apply an alignment mark to the crankshaft sprocket and drive chain link.
3. Remove the camshaft sprocket.
4. On later engines, remove the drive chain tensioner shoe so that the chain can be removed from the crankshaft sprocket.
5. Remove the oil pump drive clutch from the front end of the crankshaft (see picture).
6. Remove the drive chain from the crankshaft sprocket.
7. Using a puller, remove the sprocket from the front end of the crankshaft.
8. If present, remove the segment key.
Examination
1. Check the condition of the teeth on the sprocket. The teeth on the sprocket are symmetrical and if there is wear on the teeth, the sprocket must be replaced.
Installation
1. Install a segment key into the groove of the crankshaft.
2. When installing a new crankshaft sprocket, make a mark on it in the same place as on the old sprocket.
3. Align the groove on the sprocket with the key and install the sprocket onto the crankshaft. When installing the sprocket, you can use a tubular mandrel and a hammer.
4. Install the oil pump drive clutch.
5. Put the drive chain on the crankshaft sprocket in accordance with the previously marked marks.
6. If equipped, install the drive chain tensioner shoe.
7. Install the camshaft sprocket.
8. Install the drive chain cover.