GM brake shoe wearing oddly - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Suspension - Brakes - Steering
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 05-02-2009, 12:15 PM
fast68's Avatar
likes chevy trucks & boobies
 
Last photo:
Join Date: Oct 2005
Location: IL
Posts: 1,970
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
GM brake shoe wearing oddly

ive got a 91 7.5" GM axle on a daily driver

the driver side front-most shoe is wearing very oddly.

it locked up on me at low speed a couple times earlier today and so i decided to check it out


for some reason it is wearing on the very outer edge and very ends only

any idea what may cause this ?


shoes are sitting straight and everything seems fine.


could it be as simple as the weak and very rusted shoe retainer springs?


thanks

    Advertisement

Last edited by fast68; 05-02-2009 at 01:27 PM.
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 05-02-2009, 01:13 PM
powerrodsmike's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Make a fiberglass fan shroud
Last journal entry: Next.. ..Bagging the king B (barge)
Last photo:
Join Date: Jan 2005
Location: gilroy, california
Age: 53
Posts: 4,108
Wiki Edits: 161

Thanks: 0
Thanked 3 Times in 3 Posts
Backing plate shoe bosses are worn and grooved, and catching the shoe.... missing or improperly positioned anchor /shoe guide plate, messed up retracting springs, messed up retaining springs. Stuck wheel cylinder.

That's where I'd start, sounds like the shoe is binding and getting caught when you apply the brakes..

I always check the shoe bosses for grooves, those grooves will do some weird things... grind them flat and lube em up with disc brake caliper grease.

Has the drum been surfaced a bunch of times?

Later, mikey
__________________
my signature lines...not really directed at anyone in particular..

BE different....ACT normal.

No one is completely useless..They can always be used as a bad example
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 05-02-2009, 01:29 PM
fast68's Avatar
likes chevy trucks & boobies
 
Last photo:
Join Date: Oct 2005
Location: IL
Posts: 1,970
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
hey wut up mikey


well the drum is worn down alot the truck has 196k on it and is probably on its third set of shoes i bet. they are at at least half life right now.

so far i replaced the hold down springs and sanded the shoes a bit to remove some gloss off them



and if it does it again ill have to check the bosses and ill replace all the springs then

hmm

kinda crazy all the billions of old beaters ive owned over the years and all the tons of times ive been inside drums and never come across this occurance haha

odd..

thanks

Last edited by fast68; 05-02-2009 at 01:35 PM.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 05-02-2009, 06:12 PM
T-bucket23's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Engine basic condition - how to check Last photo:
Join Date: Aug 2005
Location: Massachusetts
Age: 56
Posts: 5,094
Wiki Edits: 26

Thanks: 7
Thanked 102 Times in 87 Posts
Backing plate could also be bentor loose.
__________________
Artificial Intelligence is no match for Natural Stupidity



Chet
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 05-02-2009, 08:51 PM
Registered User
 
Last photo:
Join Date: May 2009
Location: Collingswod,N.J.
Posts: 4
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Give it a better look

I would not suggest grinding down worn shoe tables ,at least put weld in the grooves and then grind it down or just replace the backing plate all together...If it has 9 1/2 inch rear brakes, they make a two piece backing plate to replace the old one without even pulling the axles, just cut away the old ones....as for ovesized drum the specs are as follows: machine to-9.560..discard-9.590. or ten inch brakes:machine to-10.060....discard-10.090.....
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
How to properly mate a GM pump to a Mustang II rack Centerline Suspension - Brakes - Steering 73 10-31-2009 11:59 AM
Wheel clunking and brake squeal skizot Suspension - Brakes - Steering 29 10-09-2004 06:17 AM
Speedway brake kit adtkart Suspension - Brakes - Steering 2 01-11-2004 06:11 PM
Hotrodders Knowledge Cluster: Disc Brake Conversions Jon Suspension - Brakes - Steering 0 08-29-2003 03:34 PM
GM calipers - brake pads rattle! Limey Simon Suspension - Brakes - Steering 12 06-05-2003 08:25 AM


All times are GMT -6. The time now is 09:41 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.