oil from Tach drive

[Mark Todorovich]

Our 52 is ready to come home. Amazingly the only oil leak we can find is is coming from the connection betwen tach drive and cable. I don't think oil is even supposed to get there.
Any ideas , thanks so much.
Mark

[Tony Proasi]

Mark

There is a oil seal that is faulty. Here is the number 539 07 117

Tony

[Jules Dielen]

Don't drive too far or you will end up having to clean all the oil from inside your tach gauge

[Albert Haefner]

And the Seal doesn’t work without the steel shim, same diameters!!

[Mike Ruddy]

And sometimes the recess that the seal sits in is worn deeper and the new seal has to be packed out.

viewtopic.php?f=1&t=48511&p=

[David Green]

In my 356s I drill a very small hole in the cable ferrule (just above the nut) at the drive end so any oil will leak out there and not be "screw pumped" up the cable and into the tach. It's pretty easy to see a leaking seal drip when doing an oil change.

[Mark Todorovich]

The joint didn’t have the seal or the steel washer. Blew out the cable and put them on. Dry as a bone. New problem, I’ll run another thread for your help.
Thanks