I believe the M177 tensioner is oil pressure only, which is why the 380 tends to break chains. Lots of slap on start-up, and the plastic guide has a piece that is easily snapped off. That broken part falls into the crank sprocket and snaps the chain.
One cure for that it to cut the "ear" off before installation.... Should not be an issue starting up a long time idle engine unless the chain is severely stretched. Peter _______________________________________ http://www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
