[urq] Diff lock actuators: anyone has repaired the small rubberboot yet ?

Brandon Rogers brogers at terrix.com
Thu Aug 24 15:16:44 EDT 2006


L-A-
Have you tried just getting some new actuators from a salvage yard?  May
be cheapest/easiest route...

Brandon

-----Original Message-----
From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On
Behalf Of Louis-Alain Richard
Sent: Thursday, August 24, 2006 1:10 PM
To: urq at audifans.com; quattro at audifans.com
Subject: [urq] Diff lock actuators: anyone has repaired the small
rubberboot yet ?


Both diff lock actuators (857 711 995A) on my car suffer from a leak at
the little rubber boot. The diaphragm is OK, as well as the plastic body
and both vacuum nipples. Audi wants 255$ for each one. 

So anyone has an idea how can we re-seal the plunger with the body ? 

The OEM setup is a very thin and supple rubber boot that slips over a
15mm plastic tube at one end, to a 3mm shaft at the other end. Overall
length is 30mm. The stroke of the plunger is 20mm, so the small end fits
into the big end when compressed. 

What we need is a "shrink tube"-like material that keeps its suppleness
over and extended temperature range. 

Any ideas ?

Louis-Alain
Preparing for the winter... 

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