'70 Drum Brake Adjustment
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calipilot227
- New Member
- Posts: 35
- Joined: Sun Apr 10, 2016 11:50 am
- Location: San Jose, CA
'70 Drum Brake Adjustment
I've got one or more of my drums dragging. Is there a way to adjust them?
My Ford: 1970 F250 Camper Special (360, C6, 2WD, drums all around)
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
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TNIceWolf
- Blue Oval Fanatic
- Posts: 864
- Joined: Sat Jan 03, 2009 9:52 am
- Location: Tennessee Greeneville
Re: '70 Drum Brake Adjustment
They can be adjusted easily. Its a difficult process to explain. Referencing some diagrams and pictures of the assembly first might be helpful. The brakes were built to be self adjust but over time the self adjusting mechanism usually fails if not frequently replaced and maintained which almost no one does.
Find 'em....Buy 'em....Fix 'em.....Drive 'em....Love 'em
HHC 4/67AR.... Bandits.....88-92
Presently in the stable
1969 Ford F-350 DRW
1989 Chevy S-10 Tahoe ( It gets me to work and back and fetches parts and groceries)
1981 Buick Regal ( My deceased uncles last project/driver....renamed project Regal Eagle to be finished in his honor)
1990 Ford F-150 ( Miss Yvonnes Daily Driver )
My F-350 project http://www.fordification.com/forum/view ... 22&t=41744
HHC 4/67AR.... Bandits.....88-92
Presently in the stable
1969 Ford F-350 DRW
1989 Chevy S-10 Tahoe ( It gets me to work and back and fetches parts and groceries)
1981 Buick Regal ( My deceased uncles last project/driver....renamed project Regal Eagle to be finished in his honor)
1990 Ford F-150 ( Miss Yvonnes Daily Driver )
My F-350 project http://www.fordification.com/forum/view ... 22&t=41744
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sargentrs
- 100% FORDified!
- Posts: 9866
- Joined: Fri Jun 22, 2007 9:30 am
- Location: Georgia, Jasper
Re: '70 Drum Brake Adjustment
Hard to describe in words. There are a lot of videos on YouTube. Many makes and models but the concepts are universal. https://www.google.com/search?q=adjusti ... 8&oe=utf-8 Basically, there is an adjuster with a gear wheel that spreads the bottom of both shoes apart. It is accessible through a hole in the back of the brake backing plate. You rotate the adjuster wheel to expand or contract the adjuster. I find it easier to remove the drum, adjust it by hand to get it close enough to where it just kisses the inside of the drum. Then put the drum back on and tweak it through the hole.
Randy
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
1970 F100 Sport Custom Limited LWB, 302cid, 3 on the tree. NO A/C, NO P/S, NO P/B. Currently in 1000 pcs while rebuilding. Project thread: http://www.fordification.com/forum/view ... 22&t=59995 Plan: 351w, C4, LSD, pwr front disc, p/s, a/c, bucket seats, new interior and paint.
1987 F-150 XLT Lariat, 5.0/C6 auto.
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calipilot227
- New Member
- Posts: 35
- Joined: Sun Apr 10, 2016 11:50 am
- Location: San Jose, CA
Re: '70 Drum Brake Adjustment
Thank you!
My Ford: 1970 F250 Camper Special (360, C6, 2WD, drums all around)
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
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calipilot227
- New Member
- Posts: 35
- Joined: Sun Apr 10, 2016 11:50 am
- Location: San Jose, CA
Re: '70 Drum Brake Adjustment
Turns out the problem was with the brake booster. Output rod was adjusted too long and putting pressure on the master cylinder. All is well now.
Note to self: always start with the last part you changed
Note to self: always start with the last part you changed
My Ford: 1970 F250 Camper Special (360, C6, 2WD, drums all around)
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
My Daily: 1998 Volvo S70 T5
"In the beginning, God made the light.
Shortly thereafter, God made three big mistakes.
The first mistake was called "Man." The second mistake was called "Wo-man."
And the third mistake was the invention of the poodle."
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1972hiboy
- 100% FORDified!
- Posts: 2421
- Joined: Thu Sep 09, 2010 5:44 pm
- Location: California, Santa Cruz
Re: '70 Drum Brake Adjustment
Been there done that with the brake booster. glad you got it figured out though. 
good to see another bay area guy.
good to see another bay area guy.Rich
1973 f350 super c/s 460/c6 22k orig miles
1972 f350 srw crewcab special 390
1972 f250 4x4 sport custom 390fe Red
1972 f250 4x4 custom 360 FE " Ranger Ric"
1972 f250 4x4 custom 84k og miles 390
1971 f250 4x4 sport custom 56k og miles. 360
1970 f250 4x4 428 fe hp60 205 d60
Dont eat yellow snow.....
1973 f350 super c/s 460/c6 22k orig miles
1972 f350 srw crewcab special 390
1972 f250 4x4 sport custom 390fe Red
1972 f250 4x4 custom 360 FE " Ranger Ric"
1972 f250 4x4 custom 84k og miles 390
1971 f250 4x4 sport custom 56k og miles. 360
1970 f250 4x4 428 fe hp60 205 d60
Dont eat yellow snow.....