Date: Wed, 17 Oct 2012 21:25:59 -0400
Reply-To: "aka.bugle" <aka.bugle@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: "aka.bugle" <aka.bugle@GMAIL.COM>
Subject: Re: Larger Audi a/t cooler fits transporter
In-Reply-To: <CAALwurmfR_p5NJKgq1i3_N_dMKCsSPKjfUuE8gusyHYQyrm4hA@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1
A/T is all back together, but I'm waiting on a 2nd refurbed torque conv'
(the 1st one came with a pretty sloppy helicoil in one of the lugs) I used
some of the larger steels over again as some of the new ones were quite
tight in the bore. I'm pretty sure the major problem was a broken diaphram
spring and some extremely worn discs and steels all the way inside. I also
found one broken ring on the oil pump shaft. All new seals on the final
drive. My diff' shims luckily needed just the exact addition of what
happened to be in my other trans! I'm not monkeying with the valve body at
this time, as its easy to drop if there are any more problems.
I said all my prayers and lit the holy candles to the saint of A/T
pistons... I couldn't afford to replace them... (ANOTHER 100 bucks. and
mine were still soft, w/out nicks and tested fine) We'll see.
On Sun, Oct 14, 2012 at 12:05 AM, aka.bugle <aka.bugle@gmail.com> wrote:
> testing at not quite 21psi... been holding rock steady (3 hours now) after
> an initial leak sent me after a better hose clamp. I'm gonna take it
> higher tomorrow (30 psi should really be a sufficient final test) ... "**the
> *coolant* pressure relief cap must release at 1.2 to 1.6 bar (18 to 23 *
> psi*)" ... then I'll back flush out both sides of the exchanger.
>
>
> On Sat, Oct 13, 2012 at 3:24 PM, aka.bugle <aka.bugle@gmail.com> wrote:
>
>> 'm not going to submerge it (probably hard to get water out of the atf
>> side of the cooler.) I am going to apply 30 psi to the water side w/ a
>> bicycle pump on one side and a long hose and gauge on the other side. see
>> if it holds 30 psi overnight.
>>
>>
>> On Sat, Oct 13, 2012 at 11:11 AM, Dennis Haynes <d23haynes57@hotmail.com>wrote:
>>
>>> Oil-water heat exchangers can leak due to both temperature and pressure.
>>> The
>>> Leaks can also be so small they can't readily be detected. What method
>>> are
>>> you planning? I would test the coolant side (easiest to connect to) by
>>> applying shop air and submerging the unit and look for bubbles. After it
>>> is
>>> installed and running have oil test performed on the ATF. They will
>>> detect
>>> if any antifreeze is getting in there. For the engine oil cooler since
>>> the
>>> engine oil pressure is higher than the cooling system pressure a failure
>>> shows as oil in the coolant.
>>>
>>> Dennis
>>>
>>>
>>> -----Original Message-----
>>> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf
>>> Of
>>> aka.bugle
>>> Sent: Friday, October 12, 2012 8:55 PM
>>> To: vanagon@GERRY.VANAGON.COM
>>> Subject: Re: Larger Audi a/t cooler fits transporter
>>>
>>> Sweet!
>>> Do we all agree that 30psi is sufficient to test the water side of these
>>> coolers?
>>>
>>> On Fri, Oct 12, 2012 at 8:04 PM, Dennis Haynes
>>> <d23haynes57@hotmail.com>wrote:
>>>
>>> > Yes the larger cooler should work better. Most of the heat is
>>> > generated in the torque converter and it does a great job cooling
>>> > itself with those attached fins. The water to oil cooling approach is
>>> > a bit of an interesting set up. For the most part the transmission
>>> > cooler is in parallel with the radiator. The coolant going to it is
>>> > the same as that going into the radiator. It is the flow (volume) that
>>> > determines the cooling capacity and when underway (radiator has
>>> > sufficient air flow) the coolant flow will be dependent on load and
>>> > speed. Higher load = more cooling!
>>> >
>>> > Dennis
>>> >
>>> > -----Original Message-----
>>> > From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
>>> > Behalf Of aka.bugle
>>> > Sent: Friday, October 12, 2012 6:06 PM
>>> > To: vanagon@GERRY.VANAGON.COM
>>> > Subject: Larger Audi a/t cooler fits transporter
>>> >
>>> > Have to pressure test it... but it fits well and is about 3/4"
>>> thicker...
>>> > so must be better at cooling eh?
>>> > part # 087.409.061E
>>> >
>>> > --
>>> > Best Regards,
>>> > ~david
>>> >
>>> >
>>>
>>>
>>> --
>>> Best Regards,
>>> ~david
>>>
>>>
>>
>>
>> --
>> Best Regards,
>> ~david
>>
>>
>
>
> --
> Best Regards,
> ~david
>
>
--
Best Regards,
~david
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