Vanden Plas L6-4.0L (1990)
Timing Chain: Service and Repair
Timing Chain Upper
1. Remove the timing cover. Remove the elastic band from the upper dampers (1,2) and remove the upper timing chain (3).
2. Push back the lock tabs on the bolts (4) securing the tensioner pedestal, remove the pedestal bolts and tab washer.
3. Remove the pedestal/tensioner assembly and chain damper (1).
4. Remove the tensioner pivot pin (5) and remove the tensioner from the pedestal. Clean the pivot pin.
5. Fit a new tensioner to the pedestal and fit the tensioner pivot pin.
6. Align a new tab washer to the tensioner and fit the securing bolts.
7. Align the damper to the tensioner and fit the damper/tensioner assembly to the engine. Ensure that the damper does not foul the distributor drive
shaft sprocket.
8. Finally tighten the securing bolts and lock over the tabs.
9. Fit the new timing chain.
10. Re-position the upper tensioner and secure to the upper dampers with an elastic band. Remove the oil seal and spacer from the timing cover.
11. Clean all gasket surfaces, oil seal spacer, pointer and crankshaft damper.
12. Using Service Tool JD 129 fit a new oil seal to the timing cover.
13. Refit the timing cover.
Note: Upper timing chain tensioner to block 23-27 Nm
