Low Brake Pedal - 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
lost password?   |   register now

LinkBack Thread Tools
  #1 (permalink)  
Old 03-16-2012, 01:42 PM
Registered User
Join Date: Mar 2009
Location: Georgia
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post
Low Brake Pedal

I've got a 1980 Grand Lemans and a 1980 GMC Cabellero (same as an El Camino). Same brake systems. The brake pedal on the Cabellero is way too low. It's been that way since I purchased the car 10 plus years ago and went through brakes then. I just replaced the calipers, master cylinder, and front brake hoses. The rear shoes are only a month or so old. The rears are adjusted so there is a slight scrapping sound when the wheels are turned. The space between the brake booster rod and the master cylinder piston pocket is .009+/-. There is no adjustment for the rod between the brake pedal arm and the booster. It's not air in the system. I replaced the rear brake adjusters when I replaced the shoes with the hope the self-adjusters were not doing thier job.
I made the recent repairs because of another problem. The left front caliper hose was stopped up. I've never had this happen so I may have changed some things that didn't need replacing. There were several clues but I tought the caliper had gone bad even though it wasn't leaking. I found black gunt in the master cylinder resevoir.
Any suggestions would be appreciated. The shop manual isn't any help.

Reply With Quote Quick reply to this message
The Following User Says Thank You to Ossie For This Useful Post:
Oldcar32 (07-15-2012)
Sponsored Links
  #2 (permalink)  
Old 03-16-2012, 07:54 PM
Cape Cod Bob's Avatar
Registered User
Last wiki edit: How to title a hot rod Last photo:
Join Date: Jul 2007
Location: MA
Posts: 1,293
Wiki Edits: 1

Thanks: 41
Thanked 54 Times in 43 Posts
were the rear drums turned when you put in the new shoes?
I usually adjust up the rear drums so that with a good spin the wheel only goes arounf once. That usually brings the pedal up.
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 03-16-2012, 08:38 PM
Registered User
Join Date: Mar 2009
Location: Georgia
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post

No, I ddin't turn the drums but the pedal was low before that. The pedal was low when I put new drums on it a few years ago. I'll try adjusting the shoes a little tighter. It looks like the adjusters would take care of that area.
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 03-16-2012, 09:03 PM
boothboy's Avatar
More bucks, go faster!
Last photo:
Join Date: Nov 2011
Location: Grass Valley, CA.
Posts: 943
Wiki Edits: 0

Thanks: 1,380
Thanked 1,275 Times in 945 Posts
When you are adjusting the rears are you first adjusting them until the tire and wheel will not turn? If not try adjusting them tight and then adjust them a equal amount ( count the stroke number of your brake spoon) on booth side until they rotate like Bob said. After that adjust your emergency brake. Do you have a hard petal?
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 03-17-2012, 12:59 PM
Registered User
Join Date: Mar 2009
Location: Georgia
Posts: 25
Wiki Edits: 0

Thanks: 0
Thanked 1 Time in 1 Post

I adjusted the parking brake in accordance with the shop manual. It sounds like I need to adjust the rear brakes a little tighter. An old neighbor told me years ago to depress the brake pedal periodically while adjusting the brakes. This centers the shoes in the drum. I'll try all this together.
Thanks guys.
Reply With Quote Quick reply to this message

Recent Suspension - Brakes - Steering posts with photos

Quick Reply

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:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Please select your insurance company (Optional)


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
Relationship between Gas Pedal and Brake Pedal 35WINDOW General Rodding Tech 12 01-11-2012 01:35 PM
Low Brake Pedal MidnightFord Suspension - Brakes - Steering 2 09-05-2011 10:29 PM
low brake pedal bct Suspension - Brakes - Steering 1 11-15-2005 06:07 PM
Low brake pedal jpd37 Suspension - Brakes - Steering 6 06-15-2004 11:18 AM
brake pedal astrops Suspension - Brakes - Steering 2 06-02-2004 07:32 PM

All times are GMT -6. The time now is 10:46 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.