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[GMCnet] Tires/Tire Dealers and jacking it up [message #141450]

Sun, 28 August 2011 22:28

Dolph Santorine

Messages: 1236
Registered: April 2011
Location: Wheeling, WV

Karma: -41

Senior Member

I'm headed out this week for at least four tires.

I have a couple of local vendors that I've used in the past for automotive (one does the balancing on the race car).

What are the gotcha's when getting tire work done?

Suggestions would be appreciated, too. I know this is a hot subject.

I have two I want to get one more year out of that I'll put on the front, and then four new ones on the back.

I'll watch the datecode. I'm probably going to move to a set of Hot Shot wheels that are on the donor coach.

Dolph Santorine

DE N8JPC
Wheeling, West Virginia
dolph@dolphsantorine.com

1977 GMC 26' Palm Beach
TZE167V100820

1976 GMC 26' Donor Coach
TZE166V101610

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141481 is a reply to message #141450]

Mon, 29 August 2011 07:45

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Dolph Santorine wrote on Sun, 28 August 2011 23:28

I'm headed out this week for at least four tires.

I have a couple of local vendors that I've used in the past for automotive (one does the balancing on the race car).

What are the gotcha's when getting tire work done?

Suggestions would be appreciated, too. I know this is a hot subject.

I have two I want to get one more year out of that I'll put on the front, and then four new ones on the back.

I'll watch the datecode. I'm probably going to move to a set of Hot Shot wheels that are on the donor coach.

Dolph Santorine

Dolph,

Read about jacking in the manuals and take it to heart. Yes, other things can be done and there is risk of damage. Most common and not real obvious is that the air must be let off the rear when getting the load off the tires or you risk blowing a shock.

My favorite tire store cannot balance the coach wheels, so I have had to go to local truck tire services for that.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141491 is a reply to message #141450]

Mon, 29 August 2011 08:41

kingd

Messages: 592
Registered: June 2004

Karma: 2

Senior Member

Dolph, what is the RACECAR ??
Re jacking the coach. VERY IMPORTANT to NOT jack up the front of the coach from 1 side only. Several have reported CRACKED windshields from this being done !!!!

DAVE KING

DAVE KING lurker, wannabe Toronto, Ontario, Canada

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141495 is a reply to message #141491]

Mon, 29 August 2011 08:59

Dolph Santorine

Messages: 1236
Registered: April 2011
Location: Wheeling, WV

Karma: -41

Senior Member

Dave:

We have a Spec Miata. 2000 lbs of bugs in your teeth fun. Quite often, you can find us at Mid Ohio, Nelson Ledges, Putnam Park, or Beaver Run.

She gets the racecar, and I get the RV to drag it around with <G> Actually, the plan is for two next year.

I bought a copy of Terry Skinner's plate for jacking up the front (it's a super elegant solution).

Time to get my nose in the manuals.

Thanks for the input.

Dolph

On Aug 29, 2011, at 9:41 AM, Dave King wrote:

>
>
> Dolph, what is the RACECAR ??
> Re jacking the coach. VERY IMPORTANT to NOT jack up the front of the coach from 1 side only. Several have reported CRACKED windshields from this being done !!!!
>
> DAVE KING
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141503 is a reply to message #141491]

Mon, 29 August 2011 10:04

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

G'day,

As Mark Twain said; "the reports of my death are greatly exaggerated!"

I reckon the same goes for stories of windshields cracked by jacking up a GMC from one side.

Don't get me wrong I'm sure it can and has happened, HOWEVER, I'd be very surprised if someone cracked a windshield by jacking up
one side just high enough to get the tire off the ground to change it.

It would be interesting to know if anyone has cracked a windshield changing a tire.

I would keep an eye on tire jockeys though!

Regards,
Rob M.

-----Original Message-----
From: Dave King

Dolph, what is the RACECAR ??
Re jacking the coach. VERY IMPORTANT to NOT jack up the front of the coach from 1 side only. Several have reported CRACKED
windshields from this being done !!!!

DAVE

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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

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141526 is a reply to message #141503]

Mon, 29 August 2011 11:39

Ken Burton

Messages: 10030
Registered: January 2004
Location: Hebron, Indiana

Karma: 10

Senior Member

Robert Mueller wrote on Mon, 29 August 2011 10:04

G'day,

As Mark Twain said; "the reports of my death are greatly exaggerated!"

I reckon the same goes for stories of windshields cracked by jacking up a GMC from one side.

Don't get me wrong I'm sure it can and has happened, HOWEVER, I'd be very surprised if someone cracked a windshield by jacking up
one side just high enough to get the tire off the ground to change it.

It would be interesting to know if anyone has cracked a windshield changing a tire.

I would keep an eye on tire jockeys though!

Regards,
Rob M.

-----Original Message-----
From: Dave King

Dolph, what is the RACECAR ??
Re jacking the coach. VERY IMPORTANT to NOT jack up the front of the coach from 1 side only. Several have reported CRACKED
windshields from this being done !!!!

DAVE

Yes it has happened. I know of one case but I will not mention his name.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141545 is a reply to message #141526]

Mon, 29 August 2011 13:51

ggroth

Messages: 282
Registered: February 2004
Location: Carson City NV

Karma: 0

Senior Member

Ken Burton wrote on Mon, 29 August 2011 09:39][quote title=Robert Mueller wrote on Mon, 29 August 2011 10:04]G'day,

It would be interesting to know if anyone has cracked a windshield changing a tire.

I would keep an eye on tire jockeys though!

Regards,
Rob M.
is name.

Yes Rob, it has happened to me. I jacked up the rear end to work on replacing the bogie pins. I did not have it exactly level and I cracked the driver side windshield. I have not replaced it yet, so don't know if there was anything in the general area of windshield that could have caused it.

geo groth '73 260 Sequoia Carson City Nevada 89703

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141548 is a reply to message #141545]

Mon, 29 August 2011 13:55

emerystora

Messages: 4442
Registered: January 2004

Karma: 13

Senior Member

So far, over the years, I have only heard of this happening on a 1973. I think that the frames are more rigid on later models.

Emery Stora

On Aug 29, 2011, at 2:51 PM, George Groth wrote:

>
>
> Ken Burton wrote on Mon, 29 August 2011 09:39][quote title=Robert Mueller wrote on Mon, 29 August 2011 10:04]G'day,
>
>
> It would be interesting to know if anyone has cracked a windshield changing a tire.
>
> I would keep an eye on tire jockeys though!
>
> Regards,
> Rob M.
> is name.
>
> Yes Rob, it has happened to me. I jacked up the rear end to work on replacing the bogie pins. I did not have it exactly level and I cracked the driver side windshield. I have not replaced it yet, so don't know if there was anything in the general area of windshield that could have caused it.
>
> --
> geo groth '73 260 Sequoia
> Carson City Nevada
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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141554 is a reply to message #141491]

Mon, 29 August 2011 14:21

Gary Worobec

Messages: 867
Registered: May 2005

Karma: -1

Senior Member

This is not "AS REPORTED" This is a fact. Ask me how I know!!

Thanks

Gary and Joanne Worobec
1973 GMC Glacier
Anza, CA
----- Original Message -----
From: "Dave King" <kingd@sympatico.ca>
To: <gmclist@temp.gmcnet.org>
Sent: Monday, August 29, 2011 6:41 AM
Subject: Re: [GMCnet] Tires/Tire Dealers and jacking it up

>
>
> Dolph, what is the RACECAR ??
> Re jacking the coach. VERY IMPORTANT to NOT jack up the front of the coach
> from 1 side only. Several have reported CRACKED windshields from this
> being done !!!!
>
> DAVE KING
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141570 is a reply to message #141503]

Mon, 29 August 2011 16:40

Ken Henderson

Messages: 8726
Registered: March 2004
Location: Americus, GA

Karma: 9

Senior Member

I cracked the passenger side windshield on the X-PB by jacking that corner.
But not by just changing a tire -- I had it much higher and for a week or
more.

Ken H.

On Mon, Aug 29, 2011 at 11:04 AM, Rob Mueller <robmueller@iinet.net.au>wrote:

> ...
> It would be interesting to know if anyone has cracked a windshield changing
> a tire.
> ...
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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] Tires/Tire Dealers and jacking it up [message #141586 is a reply to message #141450]

Mon, 29 August 2011 18:12

LYNN L

Messages: 140
Registered: March 2005
Location: Pearland TX.

Karma: 0

Senior Member

I have to agree with Emory about the later frames. Take two jackstands with you to the dealer and have them lift the front end by jacking the center of the front crossmember with a 4-ton floor jack. Lift it enough to clear the tires and get a jackstand under each side of the front crossmember. Then let it down on the stands equally. Have them jack up the rear bogies using a jack on each side to just catch the coach as you dump the airbags. Let the air out of the airbags and finish lifting the rear bogies enough to clear the tires. Never had a probem doing it like this.
Lynn Sr.

Lynn L 76 Eleganza Cad.500 Pearland TX.

[Updated on: Mon, 29 August 2011 18:13]

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141591 is a reply to message #141545]

Mon, 29 August 2011 18:32

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

George,

You note that you were working on the bogie pins; do you know how high the rear wheels were off the ground when it cracked?

Regards,
Rob M.

-----Original Message-----
From: George Groth

Yes Rob, it has happened to me. I jacked up the rear end to work on replacing the bogie pins. I did not have it exactly level and
I cracked the driver side windshield. I have not replaced it yet, so don't know if there was anything in the general area of
windshield that could have caused it.

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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

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141592 is a reply to message #141554]

Mon, 29 August 2011 18:36

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Gary,

Are you saying that you had a windshield cracked with the tire JUST off the ground say an inch or so?

Regards,
Rob M.

-----Original Message-----
From: Gary Worobec

This is not "AS REPORTED" This is a fact. Ask me how I know!!

Thanks
Gary

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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

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141593 is a reply to message #141586]

Mon, 29 August 2011 18:55

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Lynn,

I'm a lazy bugger and so I bought one of these here in Sydney:

http://tinyurl.com/3zoajk5

http://cgi.ebay.com/ebaymotors/22-Ton-Air-Hydraulic-Pneumatic-Air-Floor-Service-Jack-/190565078284?pt=Motors_Automotive_Tools&hash=i
tem2c5e90550c

I made up one of these to jack up the front:

http://www.gmcmhphotos.com/photos/showphoto.php?photo=26001

I put the jack under the 2" x 2" thick walled tow bar in back.

This makes jacking up The Blue Streak is a piece of cake.

Regards,
Rob M.

-----Original Message-----
From: LYNN LAYCOCK

I have to agree with Emory about the later frames. Take two jackstands with you to the dealer and have them lift the front end by
jacking the center of the front crossmember with a 4-ton floor jeck. Lift it enough to cler the tires and get a jackstand under each
side of the front crossmember. Theh let it down on the stands equally. Have them jack up the rear bogies using a jack on each side
to just catch the coach as you dump the airbags. Let the air out of the airbags and finish lifting the rear bogies enough to clear
the tires. Never had a probem doing it like this.
Lynn Sr.

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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

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141653 is a reply to message #141593]

Tue, 30 August 2011 07:35

Denis UK

Messages: 21
Registered: June 2011
Location: Norfolk UK

Karma: 0

Junior Member

Hi, When jacking up the rear of the coach, rather than deflating the bags can you use a support across the bogies to prevent wheels dropping? (offcut of leaf spring or similar)

1973 Glacier

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141658 is a reply to message #141653]

Tue, 30 August 2011 08:00

C Boyd

Messages: 2629
Registered: April 2006

Karma: 18

Senior Member

Denis UK wrote on Tue, 30 August 2011 08:35

Hi, When jacking up the rear of the coach, rather than deflating the bags can you use a support across the bogies to prevent wheels dropping? (offcut of leaf spring or similar)

Sir: it is always good to use a piece of leaf spring so the bogies don`t drop against the shock. When jacking, if you have dash controls, put them in travel and the leveling valve will deflate the bags auto when jacking up.

C. Boyd
76 Crestmont
East Tennessee

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141659 is a reply to message #141658]

Tue, 30 August 2011 08:07

Denis UK

Messages: 21
Registered: June 2011
Location: Norfolk UK

Karma: 0

Junior Member

Thats great, thank you.

1973 Glacier

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141662 is a reply to message #141593]

Tue, 30 August 2011 08:43

LYNN L

Messages: 140
Registered: March 2005
Location: Pearland TX.

Karma: 0

Senior Member

Robert, that sure is better than having to get the jack centered just right. If that jack can"t pick it up then I don"t know what will. Used to use one like that on 18 wheelers. Next time I need to jack up the slab after this heat wave to level it, I"ll know who to call for a loaner. Smile

Smile

Lynn L 76 Eleganza Cad.500 Pearland TX.

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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141665 is a reply to message #141653]

Tue, 30 August 2011 09:07

Mr ERFisher

Messages: 7117
Registered: August 2005

Karma: 2

Senior Member

> Hi, When jacking up the rear of the coach, rather than deflating the bags can you use a support across the bogies to prevent wheels dropping? (offcut of leaf spring or similar)

you still have to deflate the bags, the air system will bend the
spring insert (ask me how I know;>)

gene

> --
> 1973 Glacier
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--
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Re: [GMCnet] Tires/Tire Dealers and jacking it up [message #141674 is a reply to message #141554]

Tue, 30 August 2011 10:07

comcast

Messages: 604
Registered: August 2009

Karma: 0

Senior Member

Before I knew of the possible windshield breakage, I jacked up one
side of the front and was amazed to find that the other side came off
the ground as well. It was on a 77 Birch though. No windshield
problem.

Roger Black
77 Birchaven
Burns, Tn

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