The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1967 - 1972 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-25-2004, 01:39 AM   #1
skokie
Registered User
 
skokie's Avatar
 
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,342
Drum Brake Adjustment

How do you adjust drum brakes?

Thanks
skokie is offline   Reply With Quote
Old 05-25-2004, 02:04 AM   #2
drink2mny
Registered User
 
drink2mny's Avatar
 
Join Date: Jun 2003
Location: spokane wa
Posts: 2,189
there should be a little hole at the bottom of the backing plate to fit a screw driver in..there is a little wheel that you can turn to tighten or loosen the pads against the drum..
__________________
Support The Board
drink2mny is offline   Reply With Quote
Old 05-25-2004, 06:10 AM   #3
Longhorn Man
its all about the +6 inches
 
Longhorn Man's Avatar
 
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
If everything is in good shape, they should adjust on there own.
However, that is a pretty huge IF.
Longhorn Man is offline   Reply With Quote
Old 05-25-2004, 07:28 AM   #4
Woody
Registered User
 
Join Date: Feb 2000
Location: Georgetown, KY, USA
Posts: 631
IF and that is a big IF the adjusters are working, back up and hit the brakes repeatedly. that is how they ratchet out to tighten up the shoes. Also some (not all) drums have a small slot in them that you can use a brake adjuster tool (or flat screwdriver) to tighten them up. If they don't have the small slot then you have to take the drum off, tighten, reinstall drum, until you get them where you want them.
Woody is offline   Reply With Quote
Old 05-25-2004, 08:20 AM   #5
Doug M
Registered User
 
Join Date: Mar 2004
Location: Central New Jersey Exit 8
Posts: 57
Just got done doing a complete rebuild on my 1970 step with drums. There is no adjustment hole on the backing plates. The adjustment holes are punched on
the drum face and need to be fully punched out. You can then adjust them. Adjust the shoes until there is drag on the drum and then back of two notches or "clicks" you get a far better adjustment than relying on the self adjusters.
__________________
1954 GMC 150 (for sale)
1970 GMC 1500
2004 Road King
Doug M is offline   Reply With Quote
Old 05-25-2004, 08:27 AM   #6
Tx Firefighter
Watch out for your cornhole !
 
Tx Firefighter's Avatar
 
Join Date: Jun 2003
Location: Azle, Texas
Posts: 14,162
I was a post office mechanic for years. The old Jeeps were really trying to a guy as far as getting the brakes adjusted right.

An old mechanic taught me a trick. Tighten the adjuster all the way down to seat the shoes on the drum, where you can't turn the wheel at all. Then back them off about 5 clicks or so.

I used to do the "adjust it till it barely drags" method, but this way works better. It centers the shoes in the drum when you cinch them down. Then the loosening up about 5 clicks gives them just enough slack.
__________________
I'm on the Instagram- @Gearhead_Kevin
Tx Firefighter is offline   Reply With Quote
Old 05-27-2004, 12:39 PM   #7
jimfulco
Registered User
 
Join Date: May 2003
Location: Shreveport LA
Posts: 3,170
That's the way I do it.
jimfulco is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT -4. The time now is 11:05 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com