Timing Chain: Service and Repair

Fig. 10 Valve timing mark alignment. V6-231 & 252:

V6-231 & 252
1. With the timing case cover removed as outlined above, temporarily install the vibration damper bolt and washer in end of crankshaft.
2. Turn crankshaft so sprockets are positioned as shown in Fig.10. Use a sharp rap on a wrench handle to start the vibration damper bolt out without disturbing the position of the sprockets.
3. Remove oil slinger.
4. Remove distributor drive gear, fuel pump eccentric, and chain dampener, if applicable.
5. Use two large screwdrivers to alternately pry the camshaft sprocket then the crankshaft sprocket forward until the camshaft sprocket is free. Then remove camshaft sprocket and chain, and pull crankshaft sprocket off crankshaft.
6. To install, assemble chain on sprockets and slide sprockets on their respective shafts with the ``O'' marks on the sprockets lined up as shown, Fig. 10.
7. Complete the installation in the reverse order of removal.