Home » Public Forums » GMCnet » [GMCnet] Advice on bleeding brakes
| [GMCnet] Advice on bleeding brakes [message #95159] |
Mon, 09 August 2010 19:13  |
bhayes
Messages: 263
Registered: March 2010
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I'm taking my newly acquired GMC to a local auto shop tomorrow morning to
have the brakes power bled. The brakes stopped working last week, and I
suspect there is some air in the lines.
I'd like to gather any advice to give them, as this shop has never worked on
a GMC motorhome, and they don't have a lift that can lift it. What would
all of you advise?
Bryan Hayes
'76 Eleganza
Salt Lake City, UT
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Bryan Hayes
'76 Eleganza II
Salt Lake City, Utah
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| Re: [GMCnet] Advice on bleeding brakes [message #95160 is a reply to message #95159] |
Mon, 09 August 2010 19:22  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Bryan,
I'd like to demonstrate an acute grasp on the obvious and suggest you take
your GMC Manual and give it to the shop for reference.
Regards,
Rob M.
USAussie
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Bryan Hayes
Sent: Monday, August 09, 2010 8:13 PM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Advice on bleeding brakes
I'm taking my newly acquired GMC to a local auto shop tomorrow morning to
have the brakes power bled. The brakes stopped working last week, and I
suspect there is some air in the lines.
I'd like to gather any advice to give them, as this shop has never worked on
a GMC motorhome, and they don't have a lift that can lift it. What would
all of you advise?
Bryan Hayes
'76 Eleganza
Salt Lake City, UT
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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GMCnet mailing list
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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] Advice on bleeding brakes [message #95163 is a reply to message #95159] |
Mon, 09 August 2010 20:03 |
C Boyd
Messages: 2629
Registered: April 2006
Karma: 18
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| Bryan Hayes wrote on Mon, 09 August 2010 20:13 |
I'm taking my newly acquired GMC to a local auto shop tomorrow morning to
have the brakes power bled. The brakes stopped working last week, and I
suspect there is some air in the lines.
I'd like to gather any advice to give them, as this shop has never worked on
a GMC motorhome, and they don't have a lift that can lift it. What would
all of you advise?
Bryan Hayes
'76 Eleganza
Salt Lake City, UT
_______________________________________________
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http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Congratulations Bryan: Brakes don`t usually quit without a reason. I would suspect a fluid leak. Master cyl, hoses, caliper, or rear wheel cyls. If the rubber hoses (front or rear) appear to be aged or cracked they can also swell on the inside and need to be replaced. If the front rubber hoses have "banjo" type fittings they have been changed to Cadillac 80mm calipers by a previous owner. While the stock Toronado (or Elderado if Banjo) front rubber lines will work well the Jims (Jim B in Fla http://www.gmccoop.com/ ) and (Jim K in Kalifornia http://www.appliedgmc.com/ ) have stainless braded teflon hoses for front and the rear double hoses that are worth the $$. They also stock the correct master cyls and sensitized boosters if needed.
If you have any questions both Jims are always on the other end of the phone to help. If you would like to talk to other GMC owners in your area we have the "Black LIst" of owners willing to help. http://www.bdub.net/Black_List/GMCAssist.pdf
Good Luck and welcome to the herd.
Have you told Dave your TZE#???
http://www.gmcmhregistry.com/
C. Boyd
76 Crestmont
East Tennessee
[Updated on: Mon, 09 August 2010 20:08] Report message to a moderator |
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| Re: [GMCnet] Advice on bleeding brakes [message #95167 is a reply to message #95161] |
Mon, 09 August 2010 20:26 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Corrected manual states right rear first , then right middle,
then left rear, then left middle, then right front, and then
left front last.
Per manual supplement X-7625.
~ ~ ~ ~ ~ ~ ~ ~ ~
~ Mac Macdonald ~
~ Oklahoma City ~
~~ "Money Pit" ~~
~ '76 ex - P.B. ~
~ ~ ~ ~ ~ ~ ~ ~ ~
> From: meandmygmcmh@gmail.com
> Date: Mon, 9 Aug 2010 20:32:26 -0400
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Advice on bleeding brakes
>
> Bryan,
>
> I just recently had mine done and they went from the front to the back. We flushed the whole system after replacing the master cylinder.
>
> Pete Lyons
> New albany in
> 76 eleganza ii
>
> Sent from my iPhone
>
> On Aug 9, 2010, at 8:13 PM, Bryan Hayes <bhayes@byu.net> wrote:
>
> > I'm taking my newly acquired GMC to a local auto shop tomorrow morning to
> > have the brakes power bled. The brakes stopped working last week, and I
> > suspect there is some air in the lines.
> >
> > I'd like to gather any advice to give them, as this shop has never worked on
> > a GMC motorhome, and they don't have a lift that can lift it. What would
> > all of you advise?
> >
> > Bryan Hayes
> > '76 Eleganza
> > Salt Lake City, UT
> > _______________________________________________
> > GMCnet mailing list
> > List Information and Subscription Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Advice on bleeding brakes [message #95170 is a reply to message #95159] |
Mon, 09 August 2010 20:56 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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""I'm taking my newly acquired GMC to a local auto shop tomorrow morning to
have the brakes power bled. The brakes stopped working last week, and I
suspect there is some air in the lines.
I'd like to gather any advice to give them, as this shop has never worked on
a GMC motorhome, and they don't have a lift that can lift it. What would
all of you advise?
""
There's nothing too mysterious about the GMC brake setup that most shops can't handle. However, if there is air in the system, it got there somehow. I suspect you have a bad master cylinder which is also an easy and straight forward job.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Advice on bleeding brakes [message #95201 is a reply to message #95173] |
Tue, 10 August 2010 07:32 |
Steven Ferguson
Messages: 3447
Registered: May 2006
Karma: 0
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But what if Jim won't warranty it Emery?
On Mon, Aug 9, 2010 at 7:18 PM, Emery Stora <emerystora@mac.com> wrote:
> It just might be a bad mater cylinder
>
>
>
>
>
> Emery Stora
>
> On Aug 9, 2010, at 6:13 PM, Bryan Hayes <bhayes@byu.net> wrote:
>
>> I'm taking my newly acquired GMC to a local auto shop tomorrow
>> morning to
>> have the brakes power bled. The brakes stopped working last week,
>> and I
>> suspect there is some air in the lines.
>>
>> I'd like to gather any advice to give them, as this shop has never
>> worked on
>> a GMC motorhome, and they don't have a lift that can lift it. What
>> would
>> all of you advise?
>>
>> Bryan Hayes
>> '76 Eleganza
>> Salt Lake City, UT
>> _______________________________________________
>> GMCnet mailing list
>> List Information and Subscription Options:
>> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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| Re: [GMCnet] Advice on bleeding brakes [message #95217 is a reply to message #95163] |
Tue, 10 August 2010 11:32 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| C Boyd wrote on Mon, 09 August 2010 18:03 |
... While the stock Toronado (or Elderado if Banjo) front rubber lines will work well the Jims (Jim B in Fla http://www.gmccoop.com/ ) and (Jim K in Kalifornia http://www.appliedgmc.com/ ) have stainless braded teflon hoses for front and the rear double hoses that are worth the $$. ...
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I priced the stock "rubber" hoses at Auto Zone... they are within a few dollars of JimB's stainless/teflon hoses.
A full "on jack stands" brake inspection, flushing and adjustment is on my list. (One or two items after the current items are finished) IF the hoses need replacement JinB will be getting an order. Even the parts guy at Auto Zone agrees!
Now I need to build a power bleeder.....
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] Advice on bleeding brakes [message #95225 is a reply to message #95217] |
Tue, 10 August 2010 14:00 |
bhayes
Messages: 263
Registered: March 2010
Karma: 1
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Unfortunately the shop I took it to can't work on it. Their floor jack won't lift it. They referred me to a Les Schwab shop nearby that has the facilities to do the job.
The technician did say that the master cylinder seemed to have too much brake fluid in it. He explained that too much brake fluid can cause the master cylinder to not seal correctly, and that can introduce air into the system.
On a side note, both of the shop owners loved the GMC, and said that several people stopped by this morning inquiring about it.
Bryan Hayes
'76 Eleganza II
Salt Lake City, Utah
Bryan Hayes
'76 Eleganza II
Salt Lake City, Utah
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| Re: [GMCnet] Advice on bleeding brakes [message #95228 is a reply to message #95225] |
Tue, 10 August 2010 14:25 |
Eddie Pettit
Messages: 71
Registered: May 2009
Karma: 0
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Member |
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I've never heard the 'too much brake fluid' theory and would call 'bs' on
that. As soon as you put the lid on the cylinder, it expells all excess
fluid... Mind you, I'm not a master mechanic, but that'd certainly be a new
one on me.
Eddie Pettit
Midlothian VA
'73 26' CL - The Jolly Roger
> -----Original Message-----
> From: gmclist-bounces@temp.gmcnet.org
> [mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Bryan Hayes
> Sent: Tuesday, August 10, 2010 3:01 PM
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Advice on bleeding brakes
>
>
>
>
> Unfortunately the shop I took it to can't work on it. Their
> floor jack won't lift it. They referred me to a Les Schwab
> shop nearby that has the facilities to do the job.
>
> The technician did say that the master cylinder seemed to
> have too much brake fluid in it. He explained that too much
> brake fluid can cause the master cylinder to not seal
> correctly, and that can introduce air into the system.
>
> On a side note, both of the shop owners loved the GMC, and
> said that several people stopped by this morning inquiring about it.
>
> Bryan Hayes
> '76 Eleganza II
> Salt Lake City, Utah
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Advice on bleeding brakes [message #95231 is a reply to message #95159] |
Tue, 10 August 2010 14:39 |
kingd
Messages: 592
Registered: June 2004
Karma: 2
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Senior Member |
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If a shop told me my brakes didn't work because the master cylinder had TOO much fluid I'd get out of there as fast as I could, even if it meant a tow !!!!!!
DAVE KING(doing brakes since 1967)
Toronto, Ontario
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada
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| Re: [GMCnet] Advice on bleeding brakes [message #95235 is a reply to message #95225] |
Tue, 10 August 2010 15:04 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Bryan,
Run! These guys haven't got a clue!!!!
JR Wright
On Aug 10, 2010, at 3:00 PM, Bryan Hayes wrote:
>
>
> Unfortunately the shop I took it to can't work on it. Their floor
> jack won't lift it. They referred me to a Les Schwab shop nearby
> that has the facilities to do the job.
>
> The technician did say that the master cylinder seemed to have too
> much brake fluid in it. He explained that too much brake fluid can
> cause the master cylinder to not seal correctly, and that can
> introduce air into the system.
>
> On a side note, both of the shop owners loved the GMC, and said that
> several people stopped by this morning inquiring about it.
>
> Bryan Hayes
> '76 Eleganza II
> Salt Lake City, Utah
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: [GMCnet] Advice on bleeding brakes [message #95236 is a reply to message #95235] |
Tue, 10 August 2010 15:44 |
bhayes
Messages: 263
Registered: March 2010
Karma: 1
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Senior Member |
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Their theory did sound a little odd. I've never used these guys before, but I took the GMC to them because they were close and I didn't have to take any major roads to get to their shop--important when the brakes aren't working well.
Hopefully the other shop I'm taking it to will give me a clearer picture of what's going on. From what I've read and the comments all of you have posted, it does sound like a bad master cylinder.
Bryan Hayes
'76 Eleganza II
Salt Lake City, Utah
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| Re: [GMCnet] Advice on bleeding brakes [message #95249 is a reply to message #95225] |
Tue, 10 August 2010 18:08 |
Ron
Messages: 250
Registered: February 2004
Location: Conifer, Colorado
Karma: 0
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Bryan..
Too MUCH Fluid! That is Bull S***! I topped off the master before you left just to be sure there was enough.. It was down just slightly..
Those guys don't know what the hell they are talking about!
I hope the Schwab people are better..
This should be a simple straight forward deal.. If they try to make too much of it.. Get Out of there..
I am an overprotective Previous Owner.. I wish I was closer so I could come and do it for you..
Ron
now a P.O.
Conifer, CO
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| Re: [GMCnet] Advice on bleeding brakes [message #95250 is a reply to message #95246] |
Tue, 10 August 2010 18:12 |
Ron
Messages: 250
Registered: February 2004
Location: Conifer, Colorado
Karma: 0
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Senior Member |
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Hardie..
The recommended way is proper.. But if I were installing a new master I would bench bleed it first and then go the recommended way.. Farthest first.. That way all the fluid is replaced.. I recommended to Bryan they run LOTS of fluid through.. That way all bubbles should clear.. I also told him to have them tap on the calipers to remove any "stuck" bubbles that might have collected in the caliper..
Man it's frustrating to want to help and be so far away!
Ron (Now A Dreaded PO)
now a P.O.
Conifer, CO
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