| [GMCnet] stock ft wheel bearings [message #325770] |
Sun, 05 November 2017 06:39  |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Netters
While reading, " One ton front caliper rubbing...", it occurred to me that
I can't recall what is an acceptable amount of movement on a stock front
bearing system.
I've always assumed zero, but I've been wrong before!
Tks
Mike in NS
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
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| Re: [GMCnet] stock ft wheel bearings [message #325777 is a reply to message #325770] |
Sun, 05 November 2017 10:28  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Mike,
So often we mistake the bearing clearance as the reason for the movement at the wheel.
95% of movement on a stock front wheel is coming from the worn Knuckles.
The origional knuckles had a very rough inside bore finish.
After few thousand miles, those rough surfaces get knocked down and NOW you end up with a ROcking front wheel. not a bearing. Bearings need to be checked for clearance .002-.006.
Back in 1980, people were laughing at me as I did not know about checking the bearing clearance.
They knew I was a degreed engineer, so they thought we were exposed to those things. During the 5 years they never addressed these things as it was all about higher math equations that i never used after college.
We have our knuckles rebuilt using a SS sleeve that is pressed in with the sleeve at 80-100 degree temp cooler , then honed to a high finish that ends up with a slight interference fit.
We have a outer seal that is superior than the ones we have been using. We call it EXTREME Front outer bearing seal.
Why do front bearings go out befor 80-100,000 miles?
It is that flimsy outer seal that with the bearing rocking in the knuckle and losing contact with the lip on the seal. Our seal will tolerate more run out movement before the contact is lost.
You'll find it on our sight under Front Suspension.
Should anyone desire more information,contact me.
Our Assembly are warrantied for 80-100,000 miles.
This stuff I learned from great GMC owners that were top machinists and mechanics back in 1980.
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] stock ft wheel bearings [message #325781 is a reply to message #325777] |
Sun, 05 November 2017 12:26 |
Kingsley Coach
Messages: 2691
Registered: March 2009
Location: Nova Scotia Canada
Karma: -34
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Senior Member |
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Jim...seems some thought has gone into this. On First reading, it looks
like you took Ken Toma's approach and boosted it several steps forward.
I'll have to look closer at this!
Thanks
Mike in NS
Virus-free.
www.avast.com
On Sun, Nov 5, 2017 at 12:28 PM, Jim Kanomata wrote:
> Mike,
> So often we mistake the bearing clearance as the reason for the movement
> at the wheel.
> 95% of movement on a stock front wheel is coming from the worn Knuckles.
> The origional knuckles had a very rough inside bore finish.
> After few thousand miles, those rough surfaces get knocked down and NOW
> you end up with a ROcking front wheel. not a bearing. Bearings need to be
> checked for clearance .002-.006.
> Back in 1980, people were laughing at me as I did not know about checking
> the bearing clearance.
> They knew I was a degreed engineer, so they thought we were exposed to
> those things. During the 5 years they never addressed these things as it was
> all about higher math equations that i never used after college.
> We have our knuckles rebuilt using a SS sleeve that is pressed in with the
> sleeve at 80-100 degree temp cooler , then honed to a high finish that ends
> up with a slight interference fit.
> We have a outer seal that is superior than the ones we have been using. We
> call it EXTREME Front outer bearing seal.
> Why do front bearings go out befor 80-100,000 miles?
> It is that flimsy outer seal that with the bearing rocking in the knuckle
> and losing contact with the lip on the seal. Our seal will tolerate more run
> out movement before the contact is lost.
> You'll find it on our sight under Front Suspension.
> Should anyone desire more information,contact me.
> Our Assembly are warrantied for 80-100,000 miles.
> This stuff I learned from great GMC owners that were top machinists and
> mechanics back in 1980.
>
> --
> Jim Kanomata
> Applied/GMC
> mailto:jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
Life is too short to hold a grudge; slash some tires and call it even !
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| Re: [GMCnet] stock ft wheel bearings [message #325786 is a reply to message #325781] |
Sun, 05 November 2017 14:22 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Mike,
Ken Toma and Roland Wilber were friends, but they both used me as a go
between as they did not want to really help each.
I was in my 30's and they were in their 70's and they both taught me lot
about GMC and in turn I helped them to acquire parts for each.
Back then there were so many bad experience with front bearings as people
were not aware of clearance and the bearings were not manufactured close to
tolerance and half the time when the were pressed on the hub, there was NO
clearance at all and some were on so tight that we needed to remove the
spacer and install one .012 thinner.
Once Wes Coughlin went to Timken and addressed the problem with tolerances,
thing got better.
On Sun, Nov 5, 2017 at 10:26 AM, Kingsley Coach
wrote:
> Jim...seems some thought has gone into this. On First reading, it looks
> like you took Ken Toma's approach and boosted it several steps forward.
> I'll have to look closer at this!
> Thanks
> Mike in NS
>
> source=link&utm_campaign=sig-email&utm_content=webmail>
> Virus-free.
> www.avast.com
> source=link&utm_campaign=sig-email&utm_content=webmail>
>
>
> On Sun, Nov 5, 2017 at 12:28 PM, Jim Kanomata
> wrote:
>
>> Mike,
>> So often we mistake the bearing clearance as the reason for the movement
>> at the wheel.
>> 95% of movement on a stock front wheel is coming from the worn Knuckles.
>> The origional knuckles had a very rough inside bore finish.
>> After few thousand miles, those rough surfaces get knocked down and NOW
>> you end up with a ROcking front wheel. not a bearing. Bearings need to be
>> checked for clearance .002-.006.
>> Back in 1980, people were laughing at me as I did not know about checking
>> the bearing clearance.
>> They knew I was a degreed engineer, so they thought we were exposed to
>> those things. During the 5 years they never addressed these things as it
> was
>> all about higher math equations that i never used after college.
>> We have our knuckles rebuilt using a SS sleeve that is pressed in with
> the
>> sleeve at 80-100 degree temp cooler , then honed to a high finish that
> ends
>> up with a slight interference fit.
>> We have a outer seal that is superior than the ones we have been using.
> We
>> call it EXTREME Front outer bearing seal.
>> Why do front bearings go out befor 80-100,000 miles?
>> It is that flimsy outer seal that with the bearing rocking in the knuckle
>> and losing contact with the lip on the seal. Our seal will tolerate more
> run
>> out movement before the contact is lost.
>> You'll find it on our sight under Front Suspension.
>> Should anyone desire more information,contact me.
>> Our Assembly are warrantied for 80-100,000 miles.
>> This stuff I learned from great GMC owners that were top machinists and
>> mechanics back in 1980.
>>
>> --
>> Jim Kanomata
>> Applied/GMC
>> mailto:jimk@appliedairfilters.com
>> http://www.appliedgmc.com
>> 1-800-752-7502
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
>
> --
> Michael Beaton
> 1977 Kingsley 26-11
> 1977 Eleganza II 26-3
> Antigonish, NS
>
> Life is too short to hold a grudge; slash some tires and call it even !
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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