Home » Public Forums » GMCnet » NEWBY asking for help : Rear Brake replacement job (Info request for replacing rear GMC brakes + bearing cleaning etc)
| NEWBY asking for help : Rear Brake replacement job [message #330088] |
Fri, 16 March 2018 20:24  |
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Dutch Marc
Messages: 101
Registered: March 2017
Location: Full TIme Nomad
Karma: 1
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O Hi there, Thanks for reading this post.
Funny hot his GMC work for me.. Everytime I try to get ready or goto a GMC rally something seems to come up before. Key Cylinder broken, Leaking Radiator, Airbag issues, now getting ready for the Tucson AZ rally .... Brakes ???
Anyway ... Since a few days I have been noticing that my 73' Canyon land had been making grinding noises when I hit the brakes. Spend the last 2 months in AZ boondocking around and have been told maybe it's some dirts. Tried high pressure washing it out ... No luck ...
I have been talking to a few people in GMC community to ask for their opinions and get info. Just hate to ask the same people over and over for more and more info before they get to tired of me :-/ Since I am currently parked in Long Beach , I also called Miguel and asked his info and got quoted a estimate for repair.
Since I am a full timer in my '73 GMC I have plenty of time, I am trying to find out if this is something I could do myself with help of a friend who is pretty handy mechanically. My main reason from this is to learn more about my Coach. As a newbie I still think working on it is fun  and also like to save some money if possible.
As far as I have been able to get some info regarding this project, Since the wheels will be OFF and the brakes will be removed I might as well have a look at the rear bearings. I have been greasing them, but I don't know what shape or condition they are in.
Since I am new to any of this am I hoping to get as much info as possible before starting the job, Also ... to prevent any issues that I could have easily prevented by asking around or doing more research before "gettin dirty"
http://www.bdub.net/gmcmhparts/#BRAKES
I believe I only need these parts for the break job?( PLEASE LET ME KNOW IF THERE IS ANYTHING ELSE I MIGHT NEED OR IF SOMETHING IS NOT NEEDED !)
Hopefully I can find all these part locally ready for order or pickup in So-Cal Long Beach Area
I have spend quit some time calling and trying online to get any of these parts .. NO LUCK SO FAR ...
Hopefully some of you gurus can help me and will be able to supply a link for placing order from Autozone - Wagner - CarQuest - United
http://www.bdub.net/gmcmhparts/#BRAKES
This is the only part I have been able to find 
Wagner - PAB-462R = https://www.amazon.com/Wagner-ThermoQuiet-PAB462R-Riveted-Brake/dp/B000CLQO7U
Also I have been using this in the past for greasing, I assume I can use it for the bearings again ...
https://www.amazon.com/Valvoline-SynPower-Synthetic-Automotive-Grease/dp/B000CQ4DK0/ref=sr_1_1?s=automotive&ie=UTF8&qid=1513300540&sr=1-1& amp;keywords=valvoline+synthetic+grease
On a last note.... The PO mentioned showed me this when I purchased my Mello Yello ...
- Rear wheel complete brake job, Replace all shoes, hardware, and wheel bearings.
- Replace park brake system with new stainless steel pulley actuator assembly
- Change engine oil and filter, also power steering fluid, and brake fluid
- Replace brake master cylinder
Hopefully this means it will be a easy job
Thanks in advance for all the reply info and I am looking forward to meet some of you out in AZ for the GMC INT RALLY !!! YEAY !!!!
Grtx Dutch Marc
BTW : I also looked for photo's on the http://www.gmcmhphotos.com/ I only found a few images related to "rear brake" searches. Any info link - Muncho Xtra Thanks !
1973 26' Canyon Land (Mello Yello) (TZE063v101302)
Full Time GMC Nomad ('98 NL 2 USA)
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| Re: [GMCnet] NEWBY asking for help : Rear Brake replacement job [message #330090 is a reply to message #330088] |
Fri, 16 March 2018 21:16  |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma: 5
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Senior Member |
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Maintenance Manual for the 73 GMC Motor Home is your friend.
file:///C:/Users/B%20hart/AppData/Local/Temp/Temp1_X7425%20(1).zip/X7425.pdf
On Fri, Mar 16, 2018 at 7:24 PM, Dutch Marc wrote:
> O Hi there, Thanks for reading this post.
>
> Funny hot his GMC work for me.. Everytime I try to get ready or goto a GMC
> rally something seems to come up before. Key Cylinder broken, Leaking
> Radiator, Airbag issues, now getting ready for the Tucson AZ rally ....
> Brakes ???
>
> Anyway ... Since a few days I have been noticing that my 73' Canyon land
> had been making grinding noises when I hit the brakes. Spend the last 2
> months in AZ boondocking around and have been told maybe it's some dirts.
> Tried high pressure washing it out ... No luck ...
>
> I have been talking to a few people in GMC community to ask for their
> opinions and get info. Just hate to ask the same people over and over for
> more
> and more info before they get to tired of me :-/ Since I am currently
> parked in Long Beach , I also called Miguel and asked his info and got
> quoted a
> estimate for repair.
>
> Since I am a full timer in my '73 GMC I have plenty of time, I am trying
> to find out if this is something I could do myself with help of a friend who
> is pretty handy mechanically. My main reason from this is to learn more
> about my Coach. As a newbie I still think working on it is fun :) and also
> like to save some money if possible.
>
> As far as I have been able to get some info regarding this project, Since
> the wheels will be OFF and the brakes will be removed I might as well have a
> look at the rear bearings. I have been greasing them, but I don't know
> what shape or condition they are in.
>
> Since I am new to any of this am I hoping to get as much info as possible
> before starting the job, Also ... to prevent any issues that I could have
> easily prevented by asking around or doing more research before "gettin
> dirty"
>
> http://www.bdub.net/gmcmhparts/#BRAKES
>
> I believe I only need these parts for the break job?( PLEASE LET ME KNOW
> IF THERE IS ANYTHING ELSE I MIGHT NEED OR IF SOMETHING IS NOT NEEDED !)
>
> Hopefully I can find all these part locally ready for order or pickup in
> So-Cal Long Beach Area
>
> I have spend quit some time calling and trying online to get any of these
> parts .. NO LUCK SO FAR ...
>
> Hopefully some of you gurus can help me and will be able to supply a link
> for placing order from Autozone - Wagner - CarQuest - United
>
> http://www.bdub.net/gmcmhparts/#BRAKES
>
> This is the only part I have been able to find :(
>
> Wagner - PAB-462R = https://www.amazon.com/Wagner-
> ThermoQuiet-PAB462R-Riveted-Brake/dp/B000CLQO7U
>
> Also I have been using this in the past for greasing, I assume I can use
> it for the bearings again ...
>
> https://www.amazon.com/Valvoline-SynPower-Synthetic-Automotive-Grease/dp/
> B000CQ4DK0/ref=sr_1_1?s=automotive&ie=UTF8&qid=1513300540&sr=1-1&keywords=
> valvoline+synthetic+grease
>
> On a last note.... The PO mentioned showed me this when I purchased my
> Mello Yello ...
>
> - Rear wheel complete brake job, Replace all shoes, hardware, and wheel
> bearings.
> - Replace park brake system with new stainless steel pulley actuator
> assembly
> - Change engine oil and filter, also power steering fluid, and brake fluid
> - Replace brake master cylinder
>
> Hopefully this means it will be a easy job :)
>
> Thanks in advance for all the reply info and I am looking forward to meet
> some of you out in AZ for the GMC INT RALLY !!! YEAY !!!!
>
> Grtx Dutch Marc
>
> BTW : I also looked for photo's on the http://www.gmcmhphotos.com/ I only
> found a few images related to "rear brake" searches. Any info link - Muncho
> Xtra Thanks !
>
>
> --
> 1973 26' Canyon Land (Mello Yello) (TZE063v101302)
> Los Angeles, CA ('98 NL 2 USA)
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Bruce Hart
1976 Palm Beach
Milliken, Co
GMC=Got More Class
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Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330095 is a reply to message #330088] |
Sat, 17 March 2018 08:04 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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Most items can be bought local. There is a difference i think in part #'s for shoes from early to late Coaches. Yours as a 73 should be clearly one or the other. I had many suggestions and was a little confused on the best parts, so i called sirum gmc and he sent me all the brake cylinders, shoes and spring kits with the rear hoses. Looking back that may have been $100 more then buying from napa or rock auto, but not every store had every part, so i think going to sirum on the rear workes out equal to me and what my time was worth.
The problem part is the rear hoses, get them from a gmc motorhome source. Buy timkin bearings. And make look at instructions for grease seal. I have a tool for setting in the napa seals properly. The other super important item is to follow is the manual's instruction on how to tighten the castle nut to set pressure on bearings.
I took the time on my coach and was a sat-sunday project for myself. Start spraying brake line fittings today with kroil or pb blaster.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] NEWBY asking for help : Rear Brake replacement job [message #330097 is a reply to message #330095] |
Sat, 17 March 2018 08:55 |
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Durch Marc owns the late Duane Simmons' Mellow Yellow. I expect at least
the rear hoses to be just fine.
RiP Duane
http://www.gmcmhphotos.com/photos/gmcmi-las-vegas/p6615.html
On Mar 17, 2018 8:05 AM, "Jon Roche" wrote:
> Most items can be bought local. There is a difference i think in part
> #'s for shoes from early to late Coaches. Yours as a 73 should be clearly
> one or the other. I had many suggestions and was a little confused on
> the best parts, so i called sirum gmc and he sent me all the brake
> cylinders,
> shoes and spring kits with the rear hoses. Looking back that may have
> been $100 more then buying from napa or rock auto, but not every store had
> every part, so i think going to sirum on the rear workes out equal to me
> and what my time was worth.
>
> The problem part is the rear hoses, get them from a gmc motorhome
> source. Buy timkin bearings. And make look at instructions for grease
> seal. I
> have a tool for setting in the napa seals properly. The other super
> important item is to follow is the manual's instruction on how to tighten
> the
> castle nut to set pressure on bearings.
>
> I took the time on my coach and was a sat-sunday project for myself.
> Start spraying brake line fittings today with kroil or pb blaster.
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Unsubscribe or Change List Options:
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bdub
bdub.net
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330098 is a reply to message #330088] |
Sat, 17 March 2018 09:20 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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The most critcal part of doing rear brakes is setting the wheel bearing tolerance. Read this several times in the manual. Study the spindles while apart to note the two sets of pin holes in the spindles alternate to get twice the resolution of the castle nut slots.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330099 is a reply to message #330088] |
Sat, 17 March 2018 09:21 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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I think that you are trying to be prepared for the job ahead of time but I'm afraid that you will order / buy a bunch of stuff that you do not need and probably will end up not installing.
I would get a can of Valvoline Synthetic grease and jack it up with the air completely drained from the bags. Then start spinning the wheels by hand looking for the noisy one. When / if you find the noisy one, pull that wheel and drum and see what you have. From there you can determine what parts you need for it and the other ones. If you can not find the noisy one then pull one of the drums and see what you have. After that clean everything up on the removed drum and wheel, repack the bearings, on that wheel only, reassemble, and go procure the parts that you need for installation on another day.
I believe you stated that the coach had previously had the shoes replaced. Those shoes are a low wear item so I doubt that they need replacing at this time.
When reassembling, make sure that you understand how to set the tension on the axle nut.
READ the manual on this. FINGER TIGHT ONLY.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330108 is a reply to message #330099] |
Sat, 17 March 2018 14:38 |
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Dutch Marc
Messages: 101
Registered: March 2017
Location: Full TIme Nomad
Karma: 1
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Senior Member |
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Thanks Ken, for the info. I have been thinking about doing just the tire that might need it to start with. Now I know how to find out which tire/axel might be the issue to start with 
Since as a new owner I would love to know the shape/condition of all the other tires and even the bearings I have been wondering if maybe just keeping it down to 1 tire and try to see how the others could be? Not sure how to check the brake lines etc. I will find out when I look at them and try to see how old they are I guess..
Since I sold my house a few months ago and decided to go full time GM-ing I don't have a driveway and garage anymore, this makes it a little (ahum) harder to work on this one at the time, check for parts, order parts, install -> next tire , etc etc
Still trying to look for part info from local vendors, since this would be easier to pick up than wit for shipping while GMC is not mobile.. ( LA RV parking is tricky )
Tomorrow planning on following your advice and start by having a look it and go from there...
Ken Burton wrote on Sat, 17 March 2018 07:21I think that you are trying to be prepared for the job ahead of time but I'm afraid that you will order / buy a bunch of stuff that you do not need and probably will end up not installing.
I would get a can of Valvoline Synthetic grease and jack it up with the air completely drained from the bags. Then start spinning the wheels by hand looking for the noisy one. When / if you find the noisy one, pull that wheel and drum and see what you have. From there you can determine what parts you need for it and the other ones. If you can not find the noisy one then pull one of the drums and see what you have. After that clean everything up on the removed drum and wheel, repack the bearings, on that wheel only, reassemble, and go procure the parts that you need for installation on another day.
I believe you stated that the coach had previously had the shoes replaced. Those shoes are a low wear item so I doubt that they need replacing at this time.
When reassembling, make sure that you understand how to set the tension on the axle nut.
READ the manual on this. FINGER TIGHT ONLY.
1973 26' Canyon Land (Mello Yello) (TZE063v101302)
Full Time GMC Nomad ('98 NL 2 USA)
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330111 is a reply to message #330108] |
Sat, 17 March 2018 15:49 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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I have seen all kind of things cause a noisy wheel. Things like a broken spring will cause a lot of scraping noise and eventually a lot of damage. Just because one spring broke does not mean that you would necessarily replace all springs on all rear brakes. On the other hand a worn out set of shoes would cause me to look at the other wheels to see what they are like. After all of that I would then make a decision on what parts I wanted to order and replace.
It sounds like you have a plan.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330128 is a reply to message #330088] |
Sun, 18 March 2018 15:15 |
Scott Nutter
Messages: 782
Registered: January 2015
Location: Houston/San Diego
Karma: 4
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Senior Member |
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Dutch,
You previously said that you have been greasing the bearings........could that have been the bogie pin zerk fittings between the two rear tires?
To get to the wheel bearings you need to take off the drums.
Miguel will take great care of your coach if you need a shop. And his prices are not bad considering your in California.
Safe travels,
Scott.
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI
Houston, Texas
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330227 is a reply to message #330226] |
Thu, 22 March 2018 08:54 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
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Senior Member |
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if a bearing Race is that stuck, it takes lots of penetrating oil, and probably a careful dissection of the race. If you can file or cut a groove 90% deep into the race you can usually hit that groove with a chisel and the race will break open apart and it will come off. This just takes time and care as not to damage the spindle.
if you can heat it up, without heating the spindle, sometimes the race will pull off too.
not sure if there is a "special tool" for this.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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| Re: [GMCnet] NEWBY asking for help : Rear Brake replacement job [message #330228 is a reply to message #330227] |
Thu, 22 March 2018 09:47 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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You are not going to be able to file on that race. Use a Dremel tool with a
cut off wheel and score a line across the race. DO NOT TOUCH THE SPINDLE
WITH THE CUT OFF WHEEL. IF YOU DO, REPLACE THE SPINDLE. USE A COLD CHISEL
AND SAFETY GLASSES AND SPLIT THE RACE. THERE are puller tools that will get
behind the back of the race IF the brake backing plate is out of the way,
bunch more work.
Jim Hupy
On Thu, Mar 22, 2018, 6:55 AM Jon Roche wrote:
> if a bearing Race is that stuck, it takes lots of penetrating oil, and
> probably a careful dissection of the race. If you can file or cut a groove
> 90% deep into the race you can usually hit that groove with a chisel and
> the race will break open apart and it will come off. This just takes time
> and care as not to damage the spindle.
>
> if you can heat it up, without heating the spindle, sometimes the race
> will pull off too.
>
> not sure if there is a "special tool" for this.
>
>
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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| Re: NEWBY asking for help : Rear Brake replacement job [message #330230 is a reply to message #330226] |
Thu, 22 March 2018 14:19 |
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Matt Colie
Messages: 8547
Registered: March 2007
Location: S.E. Michigan
Karma: 7
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Senior Member |
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73melloyello wrote on Thu, 22 March 2018 01:13Thanks Ken, Turned out the last wheel had no brake shoe left This was not even the one making the noise LOL. It did damage the drum so I needed to replace it since it not was not possible to turn it and re-use it.
Was not able to remove inner bearing with the loaner $500 Bearing puller from O Really. Maybe there are people in the community that have this tools that I could borrow for a few hours
<link snipped>
Marc,
The link you published did not work for me. While you are not a native speaker (but better at the language than many), I am hoping that the inner bearing you are writing about is on the spindle. This would be the inner race and bearing of the inner bearing. (Got that?) If it is, a good tool to start with is called a separator. If you go to https://www.harborfreight.com/bearing-separator-and-puller-set-62593.html that will get you a picture of a set of these tools.
If you fighting with the outer race of the inner bearing, the one that is in the hub and currently connected to the damaged brake drum, that is a different game. But, you will have to take all that assembly to a real automotive shop to have the drum removed from the hub and they will have the tools and knowledge to get that race out without additional damage.
What is your current location?
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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