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Home » Public Forums » GMCnet » What have I done? (Calibrating dipstick, followed directions....or did I?)
What have I done? [message #193819] Sun, 23 December 2012 16:23 Go to next message
LNelson is currently offline  LNelson   United States
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Okay, getting ready to head up to Omaha next Friday. Going thru my checklist(s). One of the things I wanted to do was calibrate my tranny dipstick via the Mueller Way.

1. I have an aftermarket tranny dipstick, a small diameter tube running to the drivers side hood access, and a long skinny plastic dipstick.

2. I ran the engine for a minute or so.

3. I removed the modulator. No fluid ran out, and I guess I could see some fluid WAAAAYYYY down there with my flashlight.

4. I said "yikes".

5. I poured ATF right into the governor orifice, rather than force feeding ATF into the 1/4" dia tube up front.

6. Poured in 1 qt, then a second, then a third.....finally I got ATF up over the smaller diameter hole the governor shaft goes down into....after 6 freaking quarts. I stopped there thinking I have really messed up. Please note that another quart will probably fill up the "hole" of the governor.

Yes, those of you smarter than me (all of you) probably noticed that I removed the governor and not the modulator PER THE INSTRUCTIONS.

I am ASSuming that the removal of the modulator will get me back to where I want to be after loosing all of that precious Mobil 1.

Anonymous


Larry Nelson Springfield, MO Ex GMC'er, then GM Busnut now '77 Eleganza ARS WB0JOT
Re: [GMCnet] What have I done? [message #193828 is a reply to message #193819] Sun, 23 December 2012 17:25 Go to previous messageGo to next message
Billy Massey is currently offline  Billy Massey   United States
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Location: Central Texas
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OMG
On Dec 23, 2012 4:23 PM, "Larry Nelson" <larrynelsonarchitect@mchsi.com>
wrote:

>
>
> Okay, getting ready to head up to Omaha next Friday. Going thru my
> checklist(s). One of the things I wanted to do was calibrate my tranny
> dipstick via the Mueller Way.
>
> 1. I have an aftermarket tranny dipstick, a small diameter tube running to
> the drivers side hood access, and a long skinny plastic dipstick.
>
> 2. I ran the engine for a minute or so.
>
> 3. I removed the modulator. No fluid ran out, and I guess I could see some
> fluid WAAAAYYYY down there with my flashlight.
>
> 4. I said "yikes".
>
> 5. I poured ATF right into the governor orifice, rather than force feeding
> ATF into the 1/4" dia tube up front.
>
> 6. Poured in 1 qt, then a second, then a third.....finally I got ATF up
> over the smaller diameter hole the governor shaft goes down into....after 6
> freaking quarts. I stopped there thinking I have really messed up. Please
> note that another quart will probably fill up the "hole" of the governor.
>
> Yes, those of you smarter than me (all of you) probably noticed that I
> removed the governor and not the modulator PER THE INSTRUCTIONS.
>
> I am ASSuming that the removal of the modulator will get me back to where
> I want to be after loosing all of that precious Mobil 1.
>
> Anonymous
> --
> Springfield, MO
> Ex GMC'er, then GM Busnut
> now '77 Eleganza ARS WB0JOT
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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Re: [GMCnet] What have I done? [message #193829 is a reply to message #193828] Sun, 23 December 2012 17:34 Go to previous messageGo to next message
LNelson is currently offline  LNelson   United States
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Location: Springfield, MO
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Also, I looked at my spare modulator, ordered per the parts interchange book, and it is physically smaller than the one that I have now.

Modulator was pulled, ATF drained into a clean container, modulator reinstalled.

Procedure completed.



Larry Nelson Springfield, MO Ex GMC'er, then GM Busnut now '77 Eleganza ARS WB0JOT
Re: [GMCnet] What have I done? [message #193837 is a reply to message #193829] Sun, 23 December 2012 18:12 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Larry,

Some questions:

Re the spare modulator:

1) what was smaller - the external housing or the part that goes into the trans?

Re the fluid level:

1) how much fluid drained out?

2) where did the full mark wind up on the dipstick?

Regards,
Rob M.

-----Original Message-----
From: Larry Nelson

Also, I looked at my spare modulator, ordered per the parts interchange book, and it is physically smaller than the one that I have
now.

Modulator was pulled, ATF drained into a clean container, modulator reinstalled.

Procedure completed.

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] What have I done? [message #193840 is a reply to message #193837] Sun, 23 December 2012 18:35 Go to previous messageGo to next message
LNelson is currently offline  LNelson   United States
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The fluid was at the low mark on that dipstick so I marked the stick per the instructions. The modulator I have as a spare is a Pioneer 747001. The body is smaller but the shank seems to be the right size.

I would guess that about 6 quarts drained out. I didn't measure it, Bob.



Larry Nelson Springfield, MO Ex GMC'er, then GM Busnut now '77 Eleganza ARS WB0JOT
Re: [GMCnet] What have I done? [message #193847 is a reply to message #193840] Sun, 23 December 2012 19:31 Go to previous messageGo to next message
USAussie is currently offline  USAussie   United States
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Larry,

SIX QUARTS!

WOW! I wonder what would have happened to the trans if you drove the GMC that overfilled?

Regards,
Rob M.


-----Original Message-----
From: Larry Nelson

The fluid was at the low mark on that dipstick so I marked the stick per the instructions. The modulator I have as a spare is a
Pioneer 747001. The body is smaller but the shank seems to be the right size.

I would guess that about 6 quarts drained out. I didn't measure it, Bob.

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426
Re: [GMCnet] What have I done? [message #193848 is a reply to message #193847] Sun, 23 December 2012 20:06 Go to previous messageGo to next message
WD0AFQ is currently offline  WD0AFQ   United States
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Good job Larry. Glad you realized what you did. I would never have told that story on myself. Let us know how the trip goes. Email me pics if you take any.
Dan


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Re: [GMCnet] What have I done? [message #193869 is a reply to message #193847] Mon, 24 December 2012 08:16 Go to previous message
Matt Colie is currently offline  Matt Colie   United States
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Robert Mueller wrote on Sun, 23 December 2012 20:31

Larry,

SIX QUARTS!

WOW! I wonder what would have happened to the trans if you drove the GMC that overfilled?

Regards,
Rob M.
-----Original Message-----
From: Larry Nelson

The fluid was at the low mark on that dipstick so I marked the stick per the instructions. The modulator I have as a spare is a
Pioneer 747001. The body is smaller but the shank seems to be the right size.

I would guess that about 6 quarts drained out. I didn't measure it, Bob.

Rob,

From My experience, it would have blown 4 quarts out the breather right away and waited to blow out how ever much more it wanted to until he was someplace that the puddle would be an embarrassment. (Why I have the L and a catch bottle.)

Matt


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