[T3] 412 Brake Caliper Question

[William J]

When I installed the runners and IAD I had everything loose and nothing  was 
off in that respect. It was a suggestion given because back in 2009 the 
engine was hunting and I was told clamps would insure there was no vacuum 
leak, well that was not the problem. Now over time I fear given the clamps 
are not real tight that they have most likely deformed the boots.

 My main point of bringing up the auto trans dipstck is it's so difficult to 
read. My observation is that up to the first mark on the stick the trans 
fluid shows as if the fluid clings and is highly visable , past that point 
it only covers half with width of the stick .

  When I first filled the drained trans to the 6 pints and didn't add the 5 
oz . What I described above was the result . Then I added the 5 oz and the 
fluid appeared to be more visable above the first mark ( was not half the 
width of the stick ) yet it was not really filling the groove on the high 
mark so I added another 3 oz and this seemed to fill the high mark groove 
and the slight bit above that high mark was more or less a thin short wipe 
not something I felt was to  much fluid. Bentley states from low to high is 
13.5oz I've read 16 oz in some old T-3 text. . Yet here we are talking 
checking the level meaning if at the low mark one would be safe to add say 7 
oz to bring it close to between the 2 marks. Yet no where can I find where 
the level should be after adding the 6 pint's 5 oz . I can assume between 
the marks or at the hgih mark. I can't imagine the 3 oz I added made much 
difference , it just seemed to provide a clearer I'm at the high mark 
reading.

 Maybe it's just me I've always had trouble reading that stick yet never had 
an issue as long as it seemed to read above the low mark.

William

William
----- Original Message ----- 
From: "Jim Adney" <jadney at VWType3.org>
To: <type3 at vwtype3.org>
Sent: Sunday, March 13, 2016 6:37 PM
Subject: Re: [T3] 412 Brake Caliper Question


> On 13 Mar 2016 at 16:34, William J wrote:
>
>> I need to at least flush the brake fluid soon. The runner boots on my car
>> are the German cloth covered type and for some reason they are oily on 
>> the
>> cloth , I can't tell if it's oil that blew up from under the trans or 
>> what
>> it is. I was told to clamp them so I did and this most likey ruined them 
>> so
>> I need new ones.
>
> Yes, hose clamps are commonly suggested, but they're a bad idea.
> They're a fix for a different problem. The air runners and IAD need
> to be lined up in assembly so the hoses can stay straight. No amount
> of hose clamping will make up for poor assembly.
>
>>  I'm not sure where the fluid on the stick should be filling 6 pints 5
>> oz , all I know not under the low or above the high mark.
>
> Just keeping between the lines is all you need to know. I'm sure
> there's some tolerance for outside the lines, but as long as you're
> inside the lines there should be no problem.
>
> I doubt if overfilling the final drive a small amount can cause any
> real problems. It's probably more a matter of causing more churning
> of the oil and that uses energy, resulting in a (probably
> unmeasurable) reduction in gas mileage.
>
> People, and some manuals, will tell you that overfilling will result
> in overpressure and blowing out some seals in the AT or final drive,
> but this is actually impossible, since both have vents at the top, so
> they are always equalized to the atmosphere. Extreme overfilling
> might cause overheating, just because of the extra power that goes
> into the churning.
>
> -- 
> *******************************
> Jim Adney, jadney at vwtype3.org
> Madison, Wisconsin, USA
> *******************************
>
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