WARNING READ CAREFULLY: If your vacuum pump recently broke apart there may be a reason for it other than just a vacuum pump fatigue failure. When these pumps break up inside there is usually a problem with the drive mechanism inside the diesel engine. You could have a damaged cam or a worn-out bushing inside the timing device shaft. This is what drives the injection pump. When the bushing wears, the timing device with pump actuating cam WILL wobble and that can cause extreme stress on the vacuum pump mechanism. Thoroughly inspect your engine before installing a replacement pump or your replacement WILL ALSO BREAK APART!!! We can not give any warranty or return if there is an internal problem in your engine and this replacement pump breaks on you after installation. We are seeing this problem more often now and have decided to warn all our customers about this problem on the OM616 and OM617 engines.
Product Details
This new pump will come with a new gasket and proper sealant at no extra charge. You will also receive new mounting bolts and a special tight fitting hex wrench to get the old bolts out.
This unit fits all 123 and 126 chassis 1981-1985 with the 5 cylinder turbo diesel engines. Also fits 1980 and 1981 300D and 300CD non-turbo as well as 1980 to 1983 240D. NOTE: Before purchasing be sure that your current unit looks just like this one. It is not uncommon that you could have an older-style diesel engine in your Benz. If you are experiencing hard breaking and other vacuum-related problems, it may be time to replace your ailing vacuum pump.
Because of the problems mounting this up on a old engine, we can only offer a 60 day "guaranteed to work" warranty on this pump.
