Bendix Treadlvac Rebuild Question

Posted by JMB On 2020/9/15 22:35:06

In the midst of tearing down the Easamatic system on a '52 300. I have the rebuild kit from Kanter on its way. I've found a lot of useful information in the forum on the disassembly and cleaning - but I still have a couple of questions.

Firstly, the leather seal on the vacuum piston. In all of the literature I can find, it just says install the leather seal on to the rear piston plate.

During the disassembly, the old seal appeared to be attached with some black adhesive. The unit appears to have been re-furbed in the past - so I'm not sure if this adhesive is normal or not?

Should I be sticking the new seal on to the piston plate? Or is it just held in place by the wick and retaining plate? If it is stuck down - what product is recommended to use?

The second question is related to the vacuum diaphragm. The one in the unit appears to be different from the service manual. The smaller return spring in integrated into the diaphragm and is not accessible - possibly a later replacement diaphragm part during the older refurb?. While I've got the unit apart, I think I should replace this diaphragm, but I can't find a source for it - does anyone have any suggestions on where to get one?

Thanks in advance.

James