Previous Thread
Next Thread
Print Thread
Drum brake keeps getting tighter and tighter(pic added) #773390
08/14/10 09:42 AM
08/14/10 09:42 AM
Joined: May 2003
Posts: 571
central PA
M
mopartial Offline OP
mopar
mopartial  Offline OP
mopar
M

Joined: May 2003
Posts: 571
central PA
75 A-body 7 1/4" rear original drum brake. 10" I think. Keeps getting tighter, now I'm driving with brake applied. I backed off on adjusters a coupla weeks ago so drums would turn freely. Now has tightened up badly again.

Why is this happening?

Last edited by mopartial; 08/25/10 01:12 PM.

If it aint broke, dont break it.
Re: Drum brake keeps getting tighter and tighter [Re: mopartial] #773391
08/14/10 09:53 AM
08/14/10 09:53 AM
Joined: Dec 2006
Posts: 602
N.E.Ohio
P
pacifica Offline
mopar
pacifica  Offline
mopar
P

Joined: Dec 2006
Posts: 602
N.E.Ohio
If you or someone else just had them apart then the self adjuster may be installed wrong. Either post pics or veiw a service manual and you will likely see the problem

Re: Drum brake keeps getting tighter and tighter [Re: pacifica] #773392
08/14/10 12:38 PM
08/14/10 12:38 PM
Joined: Jan 2003
Posts: 20,127
Niles , Ohio
T
therocks Offline
Its Lost
therocks  Offline
Its Lost
T

Joined: Jan 2003
Posts: 20,127
Niles , Ohio
I agree sounds like adjusters are backwards.Most times the arms are marked left and right.Just remember left is drivers side.Rocky


Chrysler Firepower
Re: Drum brake keeps getting tighter (see pic) [Re: therocks] #773393
08/25/10 01:00 PM
08/25/10 01:00 PM
Joined: May 2003
Posts: 571
central PA
M
mopartial Offline OP
mopar
mopartial  Offline OP
mopar
M

Joined: May 2003
Posts: 571
central PA
I will try to post pic. Looks correct to me. See anything wrong? Drum was LOCKED.

Sorry image rotated 90*. This is driver side. No problem on other side.

6158185-brake.JPG (101 downloads)
Last edited by mopartial; 08/25/10 01:03 PM.

If it aint broke, dont break it.
Re: Drum brake keeps getting tighter (see pic) [Re: mopartial] #773394
08/25/10 01:43 PM
08/25/10 01:43 PM
Joined: Jan 2003
Posts: 2,751
Gilbertsville, PA 19525
P
Pntastar69 Offline
master
Pntastar69  Offline
master
P

Joined: Jan 2003
Posts: 2,751
Gilbertsville, PA 19525
Check to see if the brake hose is collapsed/kinked. Could be collapsed inside. This would not allow fluid to return to the m/c hence, fully expanding the brake shoes against the drum.

Re: Drum brake keeps getting tighter (see pic) [Re: Pntastar69] #773395
08/25/10 03:04 PM
08/25/10 03:04 PM
Joined: Jan 2003
Posts: 20,127
Niles , Ohio
T
therocks Offline
Its Lost
therocks  Offline
Its Lost
T

Joined: Jan 2003
Posts: 20,127
Niles , Ohio
If it was the hose both would be locked as its the rear and both feed off the same hose.Check the adjuster and make sure its a L.Been a while since I played with them.Rocky


Chrysler Firepower
Re: Drum brake keeps getting tighter (see pic) [Re: therocks] #773396
08/25/10 05:24 PM
08/25/10 05:24 PM
Joined: Jan 2003
Posts: 2,751
Gilbertsville, PA 19525
P
Pntastar69 Offline
master
Pntastar69  Offline
master
P

Joined: Jan 2003
Posts: 2,751
Gilbertsville, PA 19525
Mmmm, aren't they split to each side from the brass dist block mounted on top of the rear?

Re: Drum brake keeps getting tighter (see pic) [Re: Pntastar69] #773397
08/25/10 05:54 PM
08/25/10 05:54 PM
Joined: Jan 2003
Posts: 73,809
U.S.S.A.
JohnRR Offline
I Win
JohnRR  Offline
I Win

Joined: Jan 2003
Posts: 73,809
U.S.S.A.
Quote:

Mmmm, aren't they split to each side from the brass dist block mounted on top of the rear?




Yes they are , but fed by a single hose, wit hthat in mind even though the left is closer to the dist block eventually the pressure would build and hold them both open .

Is the adjuster adjustment changing or are you havingto push the shoes back together ? Also how about a better picture ?

Re: Drum brake keeps getting tighter (see pic) [Re: Pntastar69] #773398
08/25/10 06:01 PM
08/25/10 06:01 PM
Joined: Jan 2003
Posts: 20,127
Niles , Ohio
T
therocks Offline
Its Lost
therocks  Offline
Its Lost
T

Joined: Jan 2003
Posts: 20,127
Niles , Ohio
Steel line to the whl cyls from the block.From what he says its the adjuster getting tight.If the line was collapsing it would pressure both.The little difference in length of the steel lines really wouldnt matter.Rocky


Chrysler Firepower
Re: Drum brake keeps getting tighter (see pic) [Re: mopartial] #773399
08/25/10 07:07 PM
08/25/10 07:07 PM
Joined: Apr 2007
Posts: 807
Toronto, Canada
D
dirtybee Offline
super stock
dirtybee  Offline
super stock
D

Joined: Apr 2007
Posts: 807
Toronto, Canada
i had the exact same thing happen on my '81 d150. i had freshened up the rear brakes and one side kept tightening up 'till it was locked and so hot i couldn't touch the wheel. turned out to be the guide for the adjuster cable was slightly bent and would cause the adjuster to tighten up when driving. it's the steel piece that looks like a 1/3 or 1/2 slice of pie that the cable routes around. i was 2 hours into a road trip when i found the problem that had been bugging me for weeks. i was on the side of the highway and a vicegrip solved the problem. it was a new part by the way. check all the small parts for any bends, kinks or warpage. good luck

Re: Drum brake keeps getting tighter (see pic) [Re: dirtybee] #773400
08/25/10 08:58 PM
08/25/10 08:58 PM
Joined: May 2003
Posts: 571
central PA
M
mopartial Offline OP
mopar
mopartial  Offline OP
mopar
M

Joined: May 2003
Posts: 571
central PA
Thanks for replies.

It is the adjuster ratcheting tighter and tighter. I am back together now and rolling along nicely. Wanna drive it some before weather gets ugly. If/when it tightens again I will check for free movement of that cable, and try to post a better pic next time.


If it aint broke, dont break it.
Re: Drum brake keeps getting tighter (see pic) [Re: mopartial] #773401
08/27/10 09:56 AM
08/27/10 09:56 AM
Joined: Apr 2003
Posts: 11,475
Looking for a way out of Middl...
IMGTX Offline
I Live Here
IMGTX  Offline
I Live Here

Joined: Apr 2003
Posts: 11,475
Looking for a way out of Middl...
The adjusters are side specific as well as brake size specific.

In all probability you have an adjuster on the wrong side or a left wheel adjuster on a right wheel (or vise Versa).







Powered by UBB.threads™ PHP Forum Software 7.7.1