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Front brake issue #3051895
06/20/22 06:21 AM
06/20/22 06:21 AM
Joined: Oct 2004
Posts: 1,056
Ball Ground GA
T
TrueTripleX Offline OP
super stock
TrueTripleX  Offline OP
super stock
T

Joined: Oct 2004
Posts: 1,056
Ball Ground GA
I have stock disc brakes on my 69 B body. Just last week, the left front started "grabbing". Example, when driving 30 miles per hour, coming to a standard slow stop, with very little brake peddle pressure, the left brake will lock up. It releases ok when the peddle is release, but will lock up again if pressure is re-applied. And we are talking using very little brake peddle pressure. What are your thoughts.

Re: Front brake issue [Re: TrueTripleX] #3051935
06/20/22 09:33 AM
06/20/22 09:33 AM
Joined: Apr 2003
Posts: 3,293
Tulsa, Oklahoma
340Cuda Offline
master
340Cuda  Offline
master

Joined: Apr 2003
Posts: 3,293
Tulsa, Oklahoma
Delete...

Last edited by 340Cuda; 06/21/22 11:23 AM.
Re: Front brake issue [Re: 340Cuda] #3051951
06/20/22 10:26 AM
06/20/22 10:26 AM
Joined: Sep 2003
Posts: 16,896
north of coder
moparx Offline
"Butt Crack Bob"
moparx  Offline
"Butt Crack Bob"

Joined: Sep 2003
Posts: 16,896
north of coder
look close at the caliper and mounts, especially if it is a slider type caliper.
those types often get "divots" worn into the brackets, which causes the caliper to apply unevenly. this can cause different symptoms, including what you are experiencing.
the caliper piston can get somewhat crooked in it's bore, due to bad o-rings, also causing the issue you are experiencing.
beer

Re: Front brake issue [Re: 340Cuda] #3051952
06/20/22 10:30 AM
06/20/22 10:30 AM
Joined: Aug 2007
Posts: 559
WA
T
tman Offline
mopar
tman  Offline
mopar
T

Joined: Aug 2007
Posts: 559
WA
Some simple diagnostic steps. From checking caliper to the flexible brake hose

https://www.youtube.com/watch?v=1Mor9N9Rv2w&t=0s

Re: Front brake issue [Re: tman] #3051955
06/20/22 10:36 AM
06/20/22 10:36 AM
Joined: Feb 2014
Posts: 1,518
central il.
S
second 70 Offline
pro stock
second 70  Offline
pro stock
S

Joined: Feb 2014
Posts: 1,518
central il.
Check brake hose on opposite caliper. If that hose goes bad 100% of fluid goes to the good side causing it to lock up.







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