Re: Why do my brakes keep un-adjusting?
[Re: mickm]
#2402069
11/11/17 07:32 PM
11/11/17 07:32 PM
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Joined: Jan 2003
Posts: 25,757 Rio Linda, CA
John_Kunkel
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 25,757
Rio Linda, CA
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You are aware that the self-adjusters only work when the brakes are firmly applied when backing up?
Lots of folks shift to Drive after backing up and seldom/never use the brakes. Yes, that's why I pried the rear shoe away from the top mount. And as mentioned, it worked as expected. Yeah, but is the driver actually using the brakes to stop when backing up?
The INTERNET, the MISinformation superhighway
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Re: Why do my brakes keep un-adjusting?
[Re: mickm]
#2402073
11/11/17 07:39 PM
11/11/17 07:39 PM
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Joined: Feb 2010
Posts: 1,645 Phila. Pa.
Mattax
top fuel
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top fuel
Joined: Feb 2010
Posts: 1,645
Phila. Pa.
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Might be hunting up the wrong tree. If the right brake seems to grab hard, then maybe the left brake isn't grabbing at all. Why? Initial adjustment plays a role, but not to extent described. 20-30 miles is not normally far enough to have made a difference in the shoe lining thickness. Normally - if you're coming down Mt Washington at a clip, wear will be higher. :lol: If the shoes aren't grabbing, then the self-adjusters won't move. On the '69 up adjusters, adjusters are actuated in reverse as the secondary shoes grab . Based on what's posted so far, I'd see if the left wheel cylinder can be bled and if the wheel cyl pistons both move free. Also, review Chrysler's drum brake advice to techs http://www.imperialclub.org/Repair/Lit/Master/204/Page01.htmand '69 http://www.imperialclub.org/Repair/Lit/Master/260/Cover.htm
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Re: Why do my brakes keep un-adjusting?
[Re: mickm]
#2412934
12/04/17 02:58 AM
12/04/17 02:58 AM
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Joined: Aug 2003
Posts: 954 garnett kansas
rhad
super stock
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super stock
Joined: Aug 2003
Posts: 954
garnett kansas
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is the drivers side adjuster left hand thread?,if not thats your problem
my ladder of success is missing some rungs
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Re: Why do my brakes keep un-adjusting?
[Re: rhad]
#2412959
12/04/17 06:05 AM
12/04/17 06:05 AM
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Joined: May 2003
Posts: 96,655 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,655
On The Boat, On The Lake, Wa. ...
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Yes it's left hand thread, you can see that in the picture. And yes I checked when I saw the picture.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: Why do my brakes keep un-adjusting?
[Re: A727Tflite]
#2412962
12/04/17 06:49 AM
12/04/17 06:49 AM
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Joined: May 2003
Posts: 96,655 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,655
On The Boat, On The Lake, Wa. ...
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because he just said in reply number #2412931 at 8:44pm; So as I'm taking the whole front end apart to drop the k frame,
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: Why do my brakes keep un-adjusting?
[Re: amxautox]
#2412986
12/04/17 11:01 AM
12/04/17 11:01 AM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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because he just said in reply number #2412931 at 8:44pm; So as I'm taking the whole front end apart to drop the k frame, No need to remove those bolts though
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Why do my brakes keep un-adjusting?
[Re: A727Tflite]
#2413032
12/04/17 01:07 PM
12/04/17 01:07 PM
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Joined: Jun 2003
Posts: 21,406 It's a dry heat
gtx6970
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Posts: 21,406
It's a dry heat
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Yep- that threw me - I read his post but no reason to take the backing plates loose - Ive done it that way several times over the years. Much easier to do it this way than break the ball joint loose. ( aka no pitchfork tool or BFH required to break the ball joint loose. ) This way the lower ball joint and associated suspension components come out the with the K frame / lower control arms / tie rod ends intact.
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Re: Why do my brakes keep un-adjusting?
[Re: gtx6970]
#2413083
12/04/17 03:00 PM
12/04/17 03:00 PM
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Joined: May 2003
Posts: 96,655 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,655
On The Boat, On The Lake, Wa. ...
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And he doesn't have to break lose the brake lines and have to bleed the brakes. Different ways to get the job done.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: Why do my brakes keep un-adjusting?
[Re: floridian]
#2413130
12/04/17 04:25 PM
12/04/17 04:25 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
master
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OP
master
Joined: Jul 2006
Posts: 4,179
California
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First pic looks like you have the shoes mixed up.. Isnt the longer shoe supposed to go on the back?? I'll double check, but I think the shoes are on correctly.
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Re: Why do my brakes keep un-adjusting?
[Re: gtx6970]
#2413131
12/04/17 04:25 PM
12/04/17 04:25 PM
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Joined: Jul 2006
Posts: 4,179 California
mickm
OP
master
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OP
master
Joined: Jul 2006
Posts: 4,179
California
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Yep- that threw me - I read his post but no reason to take the backing plates loose - Ive done it that way several times over the years. Much easier to do it this way than break the ball joint loose. ( aka no pitchfork tool or BFH required to break the ball joint loose. ) This way the lower ball joint and associated suspension components come out the with the K frame / lower control arms / tie rod ends intact. Yes, that was the plan...
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Re: Why do my brakes keep un-adjusting?
[Re: amxautox]
#2413136
12/04/17 04:32 PM
12/04/17 04:32 PM
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Joined: Sep 2007
Posts: 14,889 up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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And he doesn't have to break lose the brake lines and have to bleed the brakes. Different ways to get the job done. Is there enough slack in the brake hose to slide the drum backing plate off the spindle?
They say there are no such thing as a stupid question. They say there is always the exception that proves the rule. Don't be the exception.
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Re: Why do my brakes keep un-adjusting?
[Re: Supercuda]
#2413141
12/04/17 04:39 PM
12/04/17 04:39 PM
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Joined: May 2003
Posts: 96,655 On The Boat, On The Lake, Wa. ...
amxautox
Still Retired. Still Posting on Moparts. A Lot.
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Still Retired. Still Posting on Moparts. A Lot.
Joined: May 2003
Posts: 96,655
On The Boat, On The Lake, Wa. ...
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And he doesn't have to break lose the brake lines and have to bleed the brakes. Different ways to get the job done. Is there enough slack in the brake hose to slide the drum backing plate off the spindle? Might be. If he lifts the arms and spindle up all the way, then it's very possible.
Tom
"Everyone should believe in something; I believe I'll go fishing."
-Henry David Thoreau
Men and fish are alike. They both get into trouble when they open their mouths
author unknown
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Re: Why do my brakes keep un-adjusting?
[Re: mickm]
#2414271
12/06/17 04:41 PM
12/06/17 04:41 PM
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Joined: Jan 2003
Posts: 7,538 Albany, NY
67SATisfaction
The member whose name is actually Art
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The member whose name is actually Art
Joined: Jan 2003
Posts: 7,538
Albany, NY
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Yes, back the brake problem... when I hit the brakes it pulls sharply to the right. Adjust it out and everything is ok.
What could be causing this? It is super frustrating for such a simple set up to go wrong, isn't it? You are sure the driver's shoes aren't wearing down prematurely, right? Does the car pull left when shoes are adjusted manually? Otherwise the car pulling to the side when the shoes wear down for lack of adjustment, could be hydraulic pressure isn't split equally... but you'd have pulling to the left after adjustment.. .. so, OK my gut agrees the problem is in the adjuster system. (to explain - I had a persistent "unequal braking" problem at my rear brakes a few years ago - the adjuster setup looked dead perfect, so I kept thinking it was hydraulic pressure sending unequal brake force to the rears. End of story was I found a very small discrepancy in the actuator arm's position that didn't let it engage the star wheel properly - it was the cable's eye loop at the TOP of the brake drum resulted in a shorter cable length. Problem solved). Going back to something very basic: I'd remove the rear brake drums which are working FINE (are they wearing equally?) and compare the fronts to the rears.... compare orientation of brake shoes, star wheel, cables, springs, everything.. my gut tells me something very minor isn't right and you have to find it by careful observation of something that DOES WORK right.. Do you have any Mopar buddies with '70 B-body? My '67 and '65 are just a bit different than yours. Cheers, - Art
Last edited by 67SATisfaction; 12/06/17 04:42 PM.
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