Home » Public Forums » GMCnet » [GMCnet] Final Drive Intermediate Axle questions
Re: [GMCnet] Final Drive Intermediate Axle questions [message #322548 is a reply to message #322538] |
Wed, 23 August 2017 11:16 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
Karma:
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Senior Member |
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If it makes nose as you spin the unit, there is a bad bearing on the hanger
or in the final.
On Wed, Aug 23, 2017 at 7:59 AM, Gary Kosier wrote:
> Rick,
>
> Here's all the info as best can find. The brace is GM part #397480. In
> the thru-75
> Cadillac parts manual it is listed as fitting 68-75 Eldos. Oddly enough,
> the bolt for
> the end is listed as 67-75. In the 76-81 parts manual, there is no
> mention of the
> brace, although I know it was used on at least 76-78. I have a half-dozen
> RH output
> shafts and the Cadillac brackets have a mounting ear for the brace while
> the Olds
> brackets have none. I do have a shaft for an Olds 3.21 and it's
> different, but not like
> the Caddy. So I will conclude you never had the brace.
>
> Gary Kosier who's almost as pedantic as Rob Mueller
> 77PB w/500Cad
> Newark, Ohio
>
> --------------------------------------------------
> From: "Richard Denney"
> Sent: Wednesday, August 23, 2017 9:50 AM
> To:
> Subject: Re: [GMCnet] Final Drive Intermediate Axle questions
>
> I don't know if I have the threaded hole. I'm not visualizing it
>> immediately, but it would seem to me that the 3.21 was only made during
>> the
>> time that both Cadillac and Oldsmobile used it (based on Rob's data), so I
>> would have thought they all had it. I don't recall an unused threaded
>> hole,
>> but I wasn't looking for one, either.
>>
>> I was planning to use a piece of 1/8" flat bar. It seems to me that if
>> tightened the bracket causes that bar to be insufficient (or maybe to need
>> the thing in the first place), the bracket needs to be straightened. Given
>> that GM decided it wasn't needed, I'd prefer not to use it except to
>> identify the problem.
>>
>> Rick "FD is an hour away until the weekend" Denney
>>
>> On Wed, Aug 23, 2017 at 8:36 AM, Ken Henderson
>> wrote:
>>
>> Darned if I know how I wound up with the brace on mine -- the facts are
>>> lost somewhere in my now-murky past. I know I wasn't surprised to find
>>> it,
>>> so at some time or another I saw one and thought I was supposed to have
>>> one.
>>>
>>> AFAIK before getting under the coach, there's only one place to measure
>>> --
>>> from the hole in the bracket to the threaded hole in the FD. Question
>>> is,
>>> do you have the hole in the FD?
>>>
>>> As far as the profile of the brace, it's basically straight except for
>>> the
>>> 90* bend at the bracket end. It's not flat stock but stamped to provide
>>> greater rigidity with thinner material. I'd probably use 1/4" bar stock
>>> if
>>> I were making one (though 1/8" might be enough).
>>>
>>> I'll get to the shop after breakfast.
>>>
>>> Ken
>>>
>>>
>>>
>>> On Wed, Aug 23, 2017 at 8:17 AM, Richard Denney
>>> wrote:
>>>
>>>> I wonder if Gary (or Manny) has one lying around in his stash. Seems a
>>> lot
>>>> of trouble to remove one just to measure it.
>>>>
>>>> Given that this strut only appeared on Eldorados, and given that only
>>>> (some) Eldorados used the 3.21, and given that the shaft is different
>>> with
>>>> that FD, I wonder if the struts are the same for the 455 application.
>>>> Do
>>> we
>>>> know that the blocks have the same width across those mounting points?
>>>> Manny tells me the brackets are the same, but I see an extra mounting
>>> hole
>>>> for that strut in the picture I linked, so I suspect that Cadillac
>>> dropped
>>>> the use of this strut just like GMC did for the motorhome. I know that
>>> the
>>>> 3.21 has been used pretty routinely with 455's, but I've never heard >
>>> talk
>>>> of this strut before.
>>>>
>>>> Maybe if you could measure the critical distance between the bracket >
>>> and
>>>> some reliable point on the final drive, I could use that to validate >
>>> the
>>>> straightness of the bracket once installed. If the measurement is
>>> correct,
>>>> then there is no need for the strut, it seems to me. My suspicion is >
>>> they
>>>> used it for a while and then decided it wasn't really necessary.
>>>>
>>>> How in the world did you end up with one on your motorhome? Have you
>>> always
>>>> had it? I don't see any hint of it in X-7425, looking at Figure 4, Page
>>>> 3C-4.
>>>>
>>>> I won't be back at the coach until tomorrow night at the earliest, or
>>>> probably Friday night or Saturday morning. (The grass still needs to be
>>>> mowed and the coach is an hour away.) If I can't get this resolved
>>>> immediately, I'm going to do other things (like putting in the front >
>>> end,
>>>> and dropping the tanks) while this waits for resolution. I'm going to
>>> give
>>>> Manny a call today to discuss it. But I need to have this all done by
>>> Labor
>>>> Day weekend, and I'm traveling next week and the following week.
>>>>
>>>> Rick "a little early in San Jose" Denney
>>>>
>>>>
>>>>
>>>> On Wed, Aug 23, 2017 at 7:49 AM, Ken Henderson >>>
>>>> wrote:
>>>>
>>>> > Yep, the 6.056 brace is the one I was talking about.
>>>> >
>>>> > Might know we'd have to have Gary to explain it.
>>>> >
>>>> > While your problem is obviously more fundamental than that, it may be
>>>> worth
>>>> > the minor effort to fabricate and install one. If it helps, at least
>>> it
>>>> > may give you a clue to the correct solution.
>>>> >
>>>> > Do you want me to remove mine and measure it for you?
>>>> >
>>>> >
>>>> > Ken H.
>>>> >
>>>> >
>>>> > On Tue, Aug 22, 2017 at 11:36 PM, Richard Denney >>>
>>>> > wrote:
>>>> >
>>>> > > With that clue, I found this:
>>>> > >
>>>> > > http://www.caddydaddy.com/1967-1969-cadillac-eldorado-
>>>> > > final-drive-output-shaft-flange-front-drive-axle.html
>>>> > >
>>>> > > The bracket I have doesn't have a hole for the outboard end of that
>>>> > strut,
>>>> > > although it looks like it uses one of the retainer bolts plus an
>>>> > additional
>>>> > > alignment bolt.
>>>> > >
>>>> > > Rick "wondering if this could be fabricated" Denney
>>>> > >
>>>> > > On Tue, Aug 22, 2017 at 11:08 PM Gary Kosier > > > >> gkosier@roadrunner.com
>>>>
>>>> > > wrote:
>>>> > >
>>>> > > > Rick,
>>>> > > > ''It's because that strut is only used on the Eldorado.
>>>> > > >
>>>> > > > Gary Kosier
>>>> > > > 77PB w/500Cad
>>>> > > >
>>>> > > --
>>>> > > Rick Denney
>>>> > > 73 x-Glacier 230 "Jaws"
>>>> > > Off-list email to rick at rickdenney dot com
>>>> > > _______________________________________________
>>>> > > GMCnet mailing list
>>>> > > Unsubscribe or Change List Options:
>>>> > > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>>> > >
>>>> > _______________________________________________
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>>>> >
>>>>
>>>>
>>>>
>>>> --
>>>> '73 X-Glacier 230 "Jaws"
>>>> Northern Virginia
>>>> Offlist email: rick at rickdenney dot com
>>>> _______________________________________________
>>>> GMCnet mailing list
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>>>>
>>> _______________________________________________
>>> GMCnet mailing list
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>>>
>>>
>>
>>
>> --
>> '73 X-Glacier 230 "Jaws"
>> Northern Virginia
>> Offlist email: rick at rickdenney dot com
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> _______________________________________________
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
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www.appliedgmc.com
1-800-752-7502
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[GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: jhb1 on Tue, 22 August 2017 17:20
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: USAussie on Tue, 22 August 2017 16:03
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: Kosier on Tue, 22 August 2017 22:07
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: Kosier on Wed, 23 August 2017 09:59
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: USAussie on Wed, 23 August 2017 14:59
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: jimk on Wed, 23 August 2017 11:16
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: USAussie on Wed, 23 August 2017 08:33
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: GMC.LES on Wed, 23 August 2017 11:34
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: Kosier on Wed, 23 August 2017 15:20
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
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Re: [GMCnet] Final Drive Intermediate Axle questions
By: JohnL455 on Wed, 23 August 2017 09:37
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