Home » Public Forums » GMCnet » [GMCnet] Reviving the Cad 500
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| Re: [GMCnet] Reviving the Cad 500 [message #164073 is a reply to message #164071] |
Sat, 24 March 2012 18:25   |
Dolph Santorine
Messages: 1236
Registered: April 2011
Location: Wheeling, WV
Karma: -41
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Ken:
Taking some time away and pouting is probably a good thing.
But, fellow Type A personality, you're going to think through this until you figure it out.
You will. The process can be frustrating.
It's just a machine. You'll beat it.
To your "eureka" moment!
Dolph
DE N8JPC
Wheeling, West Virginia
dolph@dolphsantorine.com
1977 GMC 26' Palm Beach
TZE167V100820
1976 GMC 26' Donor Coach
TZE166V101610
On Mar 24, 2012, at 7:05 PM, George Beckman wrote:
>
>
> Ken Henderson wrote on Sun, 18 March 2012 18:31
>> Today was not a good day.
>>
>> Baffled, desperate, sad, disgruntled, upset,..., all that stuff, I
>> started trying to figure what to do. Wound up pulling the starter,
>> flywheel lower cover, and inspection hole cover. Then disconnected
>> the torque converter from the new flex plate. Sure 'nuff, the TC
>> slides fore and aft easily about 1/8" -- just like it should, and did
>> when installed last Sunday -- it didn't push on the crankshaft. But
>> something did: With a pry bar I made sure the crank end play (0.008"
>> when assembled) was all taken up toward the rear to verify the TC free
>> travel. Then I pried from the rear to the front -- Kerplunk! With a
>> dial indicator on the flex plate, I found that the crankshaft now has
>> 0.062" end play! :(( That's almost half of the 0.125" I accumulated
>> in the 11,000 miles before the oil analysis identified the problem
>> before. And this time it took only about 300 miles!!!
>>
>> I have no idea WHY. Nor WHAT to do. And I don't want to talk about
>> it or even think about it for a while. Y'All figure it out; I'm gonna
>> go pout.
>
>
> Ken,
>
>
> Terrible news.
>
> The following is probably all wet, but we are grasping at straws here.
>
> I don't know beans about these GMCs compared to some but this has to be a lot of force. Are we sure there is not something amiss with the upper chain/sprocket/bearing/case? I don't even know how that is all held in there, but could something be out of line that is driving the sprocket forward into the TC and then on to the flex plate and crank? I know the TC is supposed to slid on the shaft. I just wonder if the sprocket dropped (pulled toward the driven sprocket) even a tiny amount it would be shoved forward by the uneven chain pressure. The flex plate could be making up for the misalignment.
>
> --
> '74 Eleganza, SE, Howell + EBL
> Best Wishes,
> George
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| Re: [GMCnet] Reviving the Cad 500 [message #164099 is a reply to message #164061] |
Sat, 24 March 2012 21:09 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Thanks, Dennis. I'd forgotten what a thorough review Brent Covey had
posted. That too is now in my personal files. What a shame that he
apparently never posted the results of the instrumented tests he intended
to accomplish.
Speaking of Brent, does any one know what ever became of him? I've really
missed his postings for the couple of years, at least, that he hasn't been
with us.
Ken H.
On Sat, Mar 24, 2012 at 4:32 PM, Dennis Sexton wrote:
>
>
> Ken,
>
> Another couple of links -- you may have seen --
>
> Brent Covey's notes on transmission and thrust bearing failure..
>
> http://www.gmcmotorhomeinfo.com/BASICTRAN.html
>
> And an interesting article on cooler restriction and thrust bearing
> failure. They set up tests on a GM transmission.
>
> http://www.automotix.net/autorepair/audi-v8-engine_repair_guide-720.html
>
> And lastly, a summary on a tuner site -- and one unexpected cause
> mentioned, poor grounding of the engine, but no real explanation why but a
> suggested test for poor grounding.
>
>
> http://www.dsmtuners.com/forums/articles-engine-fuel/342560-crankwalk-depth-explanation.html
>
>
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Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Reviving the Cad 500 [message #164105 is a reply to message #164071] |
Sat, 24 March 2012 21:17 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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George,
When I opened the chain cover; and, removed the chain, sprockets, pump, and
shafts, I didn't see anything that disturbed my non-transmission expert
self, except for the input bushing I replaced. There are some additional
checks Manny says I should make when the transmission's out again, but I
don't think he really expects any of them to prove to be the culprit. Some
of them ARE items that have been suggested in some references as possible
contributors to this recurring problem, such as worn splines on shafts
causing binding of the TC.
Still scratching my bald head. Keep the ideas coming.
Ken H.
On Sat, Mar 24, 2012 at 7:05 PM, George Beckman wrote:
> ...
> The following is probably all wet, but we are grasping at straws here.
>
> I don't know beans about these GMCs compared to some but this has to be a
> lot of force. Are we sure there is not something amiss with the upper
> chain/sprocket/bearing/case? I don't even know how that is all held in
> there, but could something be out of line that is driving the sprocket
> forward into the TC and then on to the flex plate and crank? I know the TC
> is supposed to slid on the shaft. I just wonder if the sprocket dropped
> (pulled toward the driven sprocket) even a tiny amount it would be shoved
> forward by the uneven chain pressure. The flex plate could be making up for
> the misalignment.
>
>
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Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Reviving the Cad 500 [message #164107 is a reply to message #164073] |
Sat, 24 March 2012 21:21 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Here I am in Florida, missing all the fun at Shawnee, including,
especially, seeing the faces of a lot of friends whom I have and haven't
met yet. And what am I doing? NOT "forgetting" the Cad failures. :-(
Fact is, I'm getting closer and closer to the decision to just start all
over: Replace everything. Unless I find something definitive, I don't see
a viable alternative, bad as it hurts. I've had USAF incident and accident
investigations go that way, and I STILL can't forget about them 30+ years
later.
Ken H.
On Sat, Mar 24, 2012 at 7:25 PM, Dolph Santorine wrote:
> Ken:
>
> Taking some time away and pouting is probably a good thing.
>
> But, fellow Type A personality, you're going to think through this until
> you figure it out.
>
> You will. The process can be frustrating.
>
> It's just a machine. You'll beat it.
>
> To your "eureka" moment!
>
>
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Ken Henderson
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www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Reviving the Cad 500 [message #164116 is a reply to message #164099] |
Sat, 24 March 2012 22:45 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Senior Member |
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Ken,
I found some more info on how poor grounding can contribute to thrust bearing failure, in brief, as I read it, voltage flow through the crank destroys the bearing face ...and they offer info on other, perhaps more likely (in your case) issues.
http://www.motor.com/article.asp?article_ID=1656
And here they offer a check list of sorts on how to diagnose the reason for bearing failure...
http://www.4secondsflat.com/Thrust_bearing_failures.html
Dennis
| Ken Henderson wrote on Sat, 24 March 2012 21:09 |
Thanks, Dennis. I'd forgotten what a thorough review Brent Covey had
posted. That too is now in my personal files. What a shame that he
apparently never posted the results of the instrumented tests he intended
to accomplish.
Speaking of Brent, does any one know what ever became of him? I've really
missed his postings for the couple of years, at least, that he hasn't been
with us.
Ken H.
On Sat, Mar 24, 2012 at 4:32 PM, Dennis Sexton wrote:
>
>
> Ken,
>
> Another couple of links -- you may have seen --
>
> Brent Covey's notes on transmission and thrust bearing failure..
>
> http://www.gmcmotorhomeinfo.com/BASICTRAN.html
>
> And an interesting article on cooler restriction and thrust bearing
> failure. They set up tests on a GM transmission.
>
> http://www.automotix.net/autorepair/audi-v8-engine_repair_guide-720.html
>
> And lastly, a summary on a tuner site -- and one unexpected cause
> mentioned, poor grounding of the engine, but no real explanation why but a
> suggested test for poor grounding.
>
>
> http://www.dsmtuners.com/forums/articles-engine-fuel/342560-crankwalk-depth-explanation.html
>
|
Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Reviving the Cad 500 [message #164127 is a reply to message #164099] |
Sun, 25 March 2012 07:00 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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I talked with Brent (posts) often. He was a chain smoker and had decided
to quit and it was rough on him but he was making headway. That, combined
with TW was a bit frustrating so he left the net.
On Sat, Mar 24, 2012 at 7:09 PM, Ken Henderson <hend4800@bellsouth.net>wrote:
> Thanks, Dennis. I'd forgotten what a thorough review Brent Covey had
> posted. That too is now in my personal files. What a shame that he
> apparently never posted the results of the instrumented tests he intended
> to accomplish.
>
> Speaking of Brent, does any one know what ever became of him? I've really
> missed his postings for the couple of years, at least, that he hasn't been
> with us.
>
> Ken H.
>
>
> On Sat, Mar 24, 2012 at 4:32 PM, Dennis Sexton wrote:
>
> >
> >
> > Ken,
> >
> > Another couple of links -- you may have seen --
> >
> > Brent Covey's notes on transmission and thrust bearing failure..
> >
> > http://www.gmcmotorhomeinfo.com/BASICTRAN.html
> >
> > And an interesting article on cooler restriction and thrust bearing
> > failure. They set up tests on a GM transmission.
> >
> > http://www.automotix.net/autorepair/audi-v8-engine_repair_guide-720.html
> >
> > And lastly, a summary on a tuner site -- and one unexpected cause
> > mentioned, poor grounding of the engine, but no real explanation why but
> a
> > suggested test for poor grounding.
> >
> >
> >
> http://www.dsmtuners.com/forums/articles-engine-fuel/342560-crankwalk-depth-explanation.html
> >
> >
> _______________________________________________
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--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
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| Re: [GMCnet] Reviving the Cad 500 [message #164275 is a reply to message #164105] |
Mon, 26 March 2012 20:55 |
GMC_LES
Messages: 569
Registered: October 2009
Location: Montreal
Karma: 0
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Ken,
When you "dressed" the thrust bearing to obtain the correct clearances, did you dress the front or rear surface of the shell? Was this done with a stone or abrasive paper? Using such forms of abrasive will leave some grit embedded in the surface of the bearing. The best way to remove this fine grit is to buff up the surface on a clean piece of paper resting on a flat surface.
I'm assuming that you will be checking line pressures before pulling the transmission. Please post your results, even of they appear to be within reasonable limits.
Les Burt
Montreal
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1975 Eleganza 26ft
A work in Progress
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| Re: [GMCnet] Reviving the Cad 500 [message #164318 is a reply to message #164105] |
Tue, 27 March 2012 07:37 |
GMC_LES
Messages: 569
Registered: October 2009
Location: Montreal
Karma: 0
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Senior Member |
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Ken,
Out of curiosity, when you "dressed" the thrust bearing to obtain the correct clearances, did you dress the front or rear surface of the shell? Was this done with a stone or abrasive paper? Using such forms of abrasive will leave some grit embedded in the surface of the bearing. The best way to remove this fine grit is to buff up the surface on a clean piece of paper resting on a flat surface.
I'm also curious to know if you did any alignment checks of the block to transmission?
I'm assuming that you will be checking line pressures before pulling the transmission. Please post your results, even of they appear to be within reasonable limits.
Les Burt
Montreal
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1975 Eleganza 26ft
A work in Progress
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| Re: [GMCnet] Reviving the Cad 500 [message #164353 is a reply to message #164318] |
Tue, 27 March 2012 14:12 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI+ & EBL
www.gmcwipersetc.com
On Tue, Mar 27, 2012 at 8:37 AM, Les Burt <burtco99@yahoo.com> wrote:
> Ken,
> Out of curiosity, when you "dressed" the thrust bearing to obtain the
> correct clearances, did you dress the front or rear surface of the shell?
> Was this done with a stone or abrasive paper? Using such forms of abrasive
> will leave some grit embedded in the surface of the bearing. The best way
> to remove this fine grit is to buff up the surface on a clean piece of
> paper resting on a flat surface.
>
> I'm also curious to know if you did any alignment checks of the block to
> transmission?
>
> I'm assuming that you will be checking line pressures before pulling the
> transmission. Please post your results, even of they appear to be within
> reasonable limits.
>
>
> Les Burt
> Montreal
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Reviving the Cad 500 [message #164354 is a reply to message #164353] |
Tue, 27 March 2012 14:14 |
Mr ERFisher
Messages: 7117
Registered: August 2005
Karma: 2
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On Tue, Mar 27, 2012 at 12:12 PM, Ken Henderson <hend4800@bellsouth.net>wrote:
> Ken H.
> Americus, GA
> '76 X-Birchaven w/Cad500/Howell EFI+ & EBL
> www.gmcwipersetc.com
>
>
>
> On Tue, Mar 27, 2012 at 8:37 AM, Les Burt <burtco99@yahoo.com> wrote:
>
> > Ken,
> > Out of curiosity, when you "dressed" the thrust bearing to obtain the
> > correct clearances, did you dress the front or rear surface of the shell?
> > Was this done with a stone or abrasive paper? Using such forms of
> abrasive
> > will leave some grit embedded in the surface of the bearing. The best way
> > to remove this fine grit is to buff up the surface on a clean piece of
> > paper resting on a flat surface.
> >
> > I'm also curious to know if you did any alignment checks of the block to
> > transmission?
> >
> > I'm assuming that you will be checking line pressures before pulling the
> > transmission. Please post your results, even of they appear to be within
> > reasonable limits.
> >
> >
> > Les Burt
> > Montreal
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
> _______________________________________________
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--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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| Re: [GMCnet] Reviving the Cad 500 [message #164355 is a reply to message #164353] |
Tue, 27 March 2012 14:21 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Les,
When we increased the thrust bearing clearance, we did so on a fine surface
grinder, operating only on the forward face of the bearing. To ensure that
each half was ground equally, to prevent misalignment on the aft face, the
shells were mounted on the main cap. After the grinding was completed, the
entire bearing and cap were thoroughly cleaned to remove residual abrasive.
All a routine operation for the 40 year experienced engine builder.
I'm thoroughly convinced that the cause is external to the engine -- as
anyone would be when experiencing identical failures before and after
engine work.
The only block-transmission alignment check I did was to ensure that the
the dowel pins fit snugly. Since I was convinced that the misaligned flex
plate and consequent transmission input bushing damage were the cause, I
was very skeptical about any other cause. I'm no longer so skeptical.
I will definitely be checking transmission pressures and will publish the
results.
Thanks for you inputs.
Ken H.
> On Tue, Mar 27, 2012 at 8:37 AM, Les Burt <burtco99@yahoo.com> wrote:
>
>> Ken,
>> Out of curiosity, when you "dressed" the thrust bearing to obtain the
>> correct clearances, did you dress the front or rear surface of the shell?
>> Was this done with a stone or abrasive paper? Using such forms of abrasive
>> will leave some grit embedded in the surface of the bearing. The best way
>> to remove this fine grit is to buff up the surface on a clean piece of
>> paper resting on a flat surface.
>>
>> I'm also curious to know if you did any alignment checks of the block to
>> transmission?
>>
>> I'm assuming that you will be checking line pressures before pulling the
>> transmission. Please post your results, even of they appear to be within
>> reasonable limits.
>>
>>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Reviving the Cad 500 [message #164391 is a reply to message #164355] |
Tue, 27 March 2012 19:34 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Ken -
Just for the hell of it, when you got the chain cover off next time, take a straightedge to the mating face and convince yourself it's truly flat. I can see where even a minor warp or twist would introduce some strange loads on everything it's bolted to. Set it on a mill table if you know someone who has one large enough, with the dowels out.
--johnny
'76 23' transmode norris
'76 palm beach
From: Ken Henderson <hend4800@bellsouth.net>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, March 27, 2012 3:21 PM
Subject: Re: [GMCnet] Reviving the Cad 500
I'm thoroughly convinced that the cause is external to the engine -- as
anyone would be when experiencing identical failures before and after
engine work.
The only block-transmission alignment check I did was to ensure that the
the dowel pins fit snugly. Since I was convinced that the misaligned flex
plate and consequent transmission input bushing damage were the cause, I
was very skeptical about any other cause. I'm no longer so skeptical.
I will definitely be checking transmission pressures and will publish the
results.
Thanks for you inputs.
Ken H.
> On Tue, Mar 27, 2012 at 8:37 AM, Les Burt <burtco99@yahoo.com> wrote:
>
>> Ken,
>> Out of curiosity, when you "dressed" the thrust bearing to obtain the
>> correct clearances, did you dress the front or rear surface of the shell?
>> Was this done with a stone or abrasive paper? Using such forms of abrasive
>> will leave some grit embedded in the surface of the bearing. The best way
>> to remove this fine grit is to buff up the surface on a clean piece of
>> paper resting on a flat surface.
>>
>> I'm also curious to know if you did any alignment checks of the block to
>> transmission?
>>
>> I'm assuming that you will be checking line pressures before pulling the
>> transmission. Please post your results, even of they appear to be within
>> reasonable limits.
>>
>>
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Reviving the Cad 500 [message #164396 is a reply to message #164391] |
Tue, 27 March 2012 21:20 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Johnny,
IF I bother to do anything more to the now-installed 425, I'll certainly
check everything I can learn of to ensure that it's all OK. But I'm not
sure what surface you're proposing I check: You say check with the chain
off, then mention removing the dowels -- which are on opposite sides of the
bell housing, and the dowels are in the block, not the transmission.
I do have access to a large granite precision surface block if needed.
Please clarify.
Ken H.
On Tue, Mar 27, 2012 at 8:34 PM, Johnny Bridges wrote:
>
>
> Ken -
>
> Just for the hell of it, when you got the chain cover off next time, take
> a straightedge to the mating face and convince yourself it's truly flat. I
> can see where even a minor warp or twist would introduce some strange loads
> on everything it's bolted to. Set it on a mill table if you know someone
> who has one large enough, with the dowels out.
>
>
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Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] Reviving the Cad 500 [message #164425 is a reply to message #162802] |
Wed, 28 March 2012 01:48 |
Richard Brown
Messages: 281
Registered: May 2009
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A question; If I remember correctly, wasn't the bushing that the torque converter snout rides in replaced because of uneven wear? I remember reading that some dowel pin holes were drilled slightly offset from the factory. Could a mis-aligned transmission mounting cause thrust bearing problems? This may have already been discussed, but if so I missed it. I've heard that some engines are more tolerant than others in this regard. I do remember a discussion about a possible overpressure of the torque converter because of a restricted cooler. I'm asking because I know someone who just had to replace his torque converter & bushing on his GM car. The mechanic used a standard bellhousing & a dial indicator to check the alignment & install offset dowel pins. I didn't see how it was done but just know what was done. After the alignment, a rebuilt transmission was installed & so far it's doing OK. While the trans & motor was out, he rebuilt the motor and noticed
that the thrust bearing clearance was pretty loose. If the solution is found, I'd like to pass the info on. It's possible that since Cadillac engines were never fitted with manual transmissions, they are less tolerant of excessive thrust to the crank. Some earlier Olds 455s were fitted with manual transmissions, so perhaps they are more able to stand the stress.
Richard & Carol Brown
1974 Eleganza SE
"DILLIGAF"
Lindale, Tx. 75771
903-881-0192
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Murchison, TX. 75778
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| Re: [GMCnet] Reviving the Cad 500 [message #164429 is a reply to message #164396] |
Wed, 28 March 2012 07:48 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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Senior Member |
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Ken,
Tranny pressure really spikes on shifts. Please check that also.
On Tue, Mar 27, 2012 at 7:20 PM, Ken Henderson <hend4800@bellsouth.net>wrote:
> Johnny,
>
> IF I bother to do anything more to the now-installed 425, I'll certainly
> check everything I can learn of to ensure that it's all OK. But I'm not
> sure what surface you're proposing I check: You say check with the chain
> off, then mention removing the dowels -- which are on opposite sides of the
> bell housing, and the dowels are in the block, not the transmission.
>
> I do have access to a large granite precision surface block if needed.
>
> Please clarify.
>
> Ken H.
>
>
>
> On Tue, Mar 27, 2012 at 8:34 PM, Johnny Bridges wrote:
>
> >
> >
> > Ken -
> >
> > Just for the hell of it, when you got the chain cover off next time, take
> > a straightedge to the mating face and convince yourself it's truly flat.
> I
> > can see where even a minor warp or twist would introduce some strange
> loads
> > on everything it's bolted to. Set it on a mill table if you know someone
> > who has one large enough, with the dowels out.
> >
> >
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--
Fathom the hypocrisy of a nation where every citizen must prove they have
health insurance......but not everyone has to prove they're a citizen.
Steve Ferguson
Sierra Vista, AZ
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| Re: [GMCnet] Reviving the Cad 500 [message #164431 is a reply to message #164396] |
Wed, 28 March 2012 08:00 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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The intent is to ensure that the surface which bolts up to both the transmission and the engine block is flat - i.e. not warped in such a way that the two are being held at an angle. If the trans nput shaft and the crankshaft centerline aren't precisely parallel, will not this put a bit of an end load on one or both due to a flex in the drive chain? I expect the drive system is designed to tolerate substantial side loads on the sprockets, but there's not likely to be a lot of provision for end loading, since in normal operation there hadn't ought to be any.
It's a very unlikely scenario admittedly... but you're down to the 'unlikelies' at this point, are you not? Easy to check at any rate.
--johnny
'76 23' transmode norris
'76 palm beach
From: Ken Henderson <hend4800@bellsouth.net>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, March 27, 2012 10:20 PM
Subject: Re: [GMCnet] Reviving the Cad 500
Johnny,
IF I bother to do anything more to the now-installed 425, I'll certainly
check everything I can learn of to ensure that it's all OK. But I'm not
sure what surface you're proposing I check: You say check with the chain
off, then mention removing the dowels -- which are on opposite sides of the
bell housing, and the dowels are in the block, not the transmission.
I do have access to a large granite precision surface block if needed.
Please clarify.
Ken H.
On Tue, Mar 27, 2012 at 8:34 PM, Johnny Bridges wrote:
>
>
> Ken -
>
> Just for the hell of it, when you got the chain cover off next time, take
> a straightedge to the mating face and convince yourself it's truly flat. I
> can see where even a minor warp or twist would introduce some strange loads
> on everything it's bolted to. Set it on a mill table if you know someone
> who has one large enough, with the dowels out.
>
>
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Reviving the Cad 500 [message #164470 is a reply to message #164440] |
Wed, 28 March 2012 13:51 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
|
Senior Member |
|
|
Bob,
I'm laying off -- we've been in FL for HER remaining aunt's 99th birthday
last Sunday and visiting other GMCers in the FL Panhandle (Lower Alabama)
since then. Probably headed home tomorrow. Then I won't be able to resist
getting greasy again.
Ken H.
On Wed, Mar 28, 2012 at 10:46 AM, Bob de Kruyff wrote:
>
>
> Ken, you've been very quiet on this subject--you must be up to something !
> --
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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