Question about autostick servo.

[garymurch]

I need to replace the diaphragm in the servo on my 1969 VW, and when I took it apart,it has some sort of gasket sealant around the outside edge of the rubber diaphragm.Should I use sealant on the new one when I put it back together and if so What should I use?             Thanks for any help  Gary

[Bookwus]

Hiya Gary,

Welcome to VWAR!

I rebuild clutch servos for a local repair shop here in Portland.  I have never used any kind of sealant.  The new diaphragm should sandwich very nicely between the halves of the servo canister.  Do make sure that you clean up the halves of the clutch servo can.  However, you do want to make sure that 1.  the canister halves fit together evenly making sure neither half is warped or out of round and 2.  the sealing surface of each half is smooth and not pitted. 

At that point the new diaphragm should fit nicely between the halves and, in turn, the halves can easily be clamped together with the new clamp/band.

And be sure to remember that hint I dropped your way over on the Samba.   

[garymurch]

Hi Mike,    Thank you for all the useful information.I have everything cleaned up and now I am waiting on the new part.It should be here tomorrow.Hopefully this will fix my problem.I'm sure that I will have more questions in the future.      Thanks Gary