Where is the timing chain tensioner located on a Mercedes?
If the balancer is at Zero, and the distributor points to #1 then both left and right camshaft marks should align as shown in the photos above. If this is the case you are now at TDC. Remove the timing chain tensioner located on the right passengers side head held on by 13mm bolts.
How do you remove a Mercedes timing guide?
Above you can see the old tensioner guide. You remove it by taking out the 5mm plug on the timing cover and using a magnet to pull the pin while holding on to the guide. Sometimes the pin requires the use of an easy out to remove. Careful there is a washer on that plug you dont want to lose.
Do you have to reinstall timing chain tensioner?
The tensioner is oil pressure fed and once removed from the motor must be reinstalled in a very particular order. Never just remove it and stick it back in, you may end up with the improper tension on the chain which can lead to catastrophic damage to the motor.
How to renew the chain in a Mercedes Benz?
The plastic chain guides, sprockets, pins, tensioner and chain can all be renewed through the valve covers, leaving the engine in place. Here is a simple step by step showing my first time through the process that hopefully shows you can do it without error. Loading…
When to change the timing chain on a Mercedes Benz?
Timing chain is an internal component and should not be changed unless the engine goes bad….You have to dismantle the engine to change it.
The tensioner is oil pressure fed and once removed from the motor must be reinstalled in a very particular order. Never just remove it and stick it back in, you may end up with the improper tension on the chain which can lead to catastrophic damage to the motor.
Why is the timing chain on my R350 rattling?
^ My R350 (gasoline) has had a rattling timing chain on start for the last 100,000 miles. It usually goes away after a few seconds. Apparently the timing chain tensioner is hydraulically operated off engine oil pressure.
The plastic chain guides, sprockets, pins, tensioner and chain can all be renewed through the valve covers, leaving the engine in place. Here is a simple step by step showing my first time through the process that hopefully shows you can do it without error. Loading…