Re: [T3] brake bleeding question

[Jim Adney <jadney@vwtype3.org>]

On 23 Aug 2005 at 22:46, Steven Ayres wrote:

> => 143.5 mm +/- 5 mm.
> 
> Shouldn't that be +/- .5mm?

I agree that 5mm seems like a lot, but that's what it said. Keep in mind that 
this is NOT a number that you are supposed to set your pushrod to. It is the 
range that factory-set pushrods fall into. The range is due to tolerance 
buildup in the pan, body and the mounting of the 2 together.

Consider mounting the pan to the body. There are a bunch of bolts and a bunch 
of holes. The holes are oversize, just to make sure that you can get all the 
bolts in, so there is bound to be some slop there. It's easy to get 5mm of 
variation between random assemblies of stamped and welded sheet metal.

Of course, if Everett and Dave are right, maybe the simplex MC cars where just 
set to 143.5 mm since it really didn't matter that much. OTOH, Dave's scan of 
the setting gauge doesn't mention a different gauge for early type 3s, even 
though it does for type 1s. Granted, the early type 1 gauge is still within the 
tandem MC era.

Does ANYONE have any mention of this setting gauge from a time before the 
tandem MC era?

-- 
Jim Adney
jadney@vwtype3.org
Madison, WI 53711-3054
USA

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