300SE (140.032) L6-3.2L (104.990) (1992)
Timing Chain Tensioner: Service and Repair
Replacing Oil Non-Return Valve of Chain Tensioner
NOTE: Numbers in parentheses ( ) indicate a component or tool in the associated illustration.
1. Remove timing chain cover.
2. Remove tensioning rail.
3. Pull off oil non-return valve (8) with suitable pliers.
4. Install new oil non-return valve (8) by hand.
NOTE: The oil non-return valve (8) prevents the oil reservoir for the chain tensioner in the timing case cover running dry when the engine is not
operating.