Re: [diesel_mercedes] Pulleys & Belts - 300D

Hi Brian,

 

Just did this job myself. Seems to be more common than it should. In my case the PO had replaced the front crank seal (which he screwed up putting on so it still leaked!). There are 3 Bellville washers on the bolt and the were all on backwards (should be crown out) so the bolt even torqued to 250 ft/lbs wasn't locked. If you are lucky the locator pins just sheared and didn't take out the end of the crankshaft. MB didn't use a key and keyway, they used blind 8mm pins. They can be kind of tricky to put in so patience really helps here. Seems this usually happens from the bolt not torqued, lockwashers on wrong or missing etc...

The pully stack is attached to the harmonic balancer, it will be screwed and you will need another. I think i paid about $150 used.

 

Good luck,

Tony

Brian <bstromsoe@yahoo.com> wrote:

Lost my pulleys and belts off the crankshaft last night on the #134
while passing through Glendale, CA. Will get the car towed home
tomorrow morning. Anyone ever have their pulleys separate off the
crank before? Is it a common or uncommon problem on MB's? Did the
mechanic who installed my engine (last May) tighten everything down
per spec? Was it part failure, or mechanics error? It maybe too late
to blame anyone as 9 months have elapsed, but I have never had "pulley
failure" before.

brian

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