front drum brake locking up and driving me crazy!

DarkoStoj

Founding Member

Sep 4, 2002

929

13

39

Detroit

Mar 22, 2008

#1

• Mar 22, 2008

• #1

I have no idea why my drivers brake locks up on my 65 mustang. its got manual front drum brakes with a single resivour master cylinder, and i've tried everything to get them working properly but no luck.

whenever i put any pressure on the brakes the drivers side just locks up no matter how tight/loose I adjust both sides. The brakes and all the hardware look like they are all in excellent condition and I just had the drums turned.

any ideas?

 

pabear89

Active Member

Apr 15, 2003

2,126

0

46

High in the Hills of So Ca with the Voices in My H

Mar 23, 2008

#2

• Mar 23, 2008

• #2

Flow or pressure not equal on both sides.

Line clogged to pass side or rubber brake hose balloning under pressure.

just a few places to look.

 

BarnStang

Founding Member

Mar 2, 2001

1,260

3

39

Hagerstown, MD

Mar 23, 2008

#3

• Mar 23, 2008

• #3

Or the pass side wheel cyl is seized, or partialy seized.

 

krash kendall

Active Member

Nov 19, 2004

1,258

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36

Aldergrove, B.C. Canada

Mar 23, 2008

#4

• Mar 23, 2008

• #4

My first thought would be a siezed or not pristine wheel cylinder on the opposite side as well.

-Always replace them in pairs.

 

BarnStang

Founding Member

Mar 2, 2001

1,260

3

39

Hagerstown, MD

Mar 23, 2008

#5

• Mar 23, 2008

• #5

Oh right...if the drivers side is seized, then it is not retracting all the way and causing that side to be more sensitive. Good catch. If you peel the rubber cover back and inspect, it should not be wet or show rust. It should be nearly dry inside.

 

DarkoStoj

Founding Member

Sep 4, 2002

929

13

39

Detroit

Mar 23, 2008

#6

• Mar 23, 2008

• #6

The drivers side wheel cyl works perfect, which is the one locking up. I didnt get a chance to check out the pass side wheel cyl though. Why would the drivers side lock up if the opposite pass side wheel cyl is bad?

 

krash kendall

Active Member

Nov 19, 2004

1,258

0

36

Aldergrove, B.C. Canada

Mar 23, 2008

#7

• Mar 23, 2008

• #7

The passenger side wheel cylinder (if partially siezed) is resisting the hydraulic pressure and won't expand. Whereas the driver's side cylinder slides smoothly and applies more braking force. The actual pressure in the system is always equal, so the cylinders in the best condition always recieve more braking action because the fluid takes the path of least resistance.

 

M

mustangdave

My rearend needs a stud and two nuts.

Founding Member

Feb 26, 2002

2,976

1

56

North Carolina

Mar 24, 2008

#8

• Mar 24, 2008

• #8

Sounds like you know what you're doing but just to make sure: if any fluid has been spilled or sprayed on the shoes, they will cause that side to lock up.

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

Mar 24, 2008

#9

• Mar 24, 2008

• #9

mustangdave said:

Sounds like you know what you're doing but just to make sure: if any fluid has been spilled or sprayed on the shoes, they will cause that side to lock up.

Click to expand...

I have heard that too.

 

U

USAF46270

Member

Sep 28, 2007

46

1

6

Sunny Florida

Mar 24, 2008

#10

• Mar 24, 2008

• #10

brakes

check the hose's, if the old hose is breaking down,
also check the steel line for a flat spot.

 

N

noblesteed

New Member

Sep 10, 2007

28

0

0

Mar 24, 2008

#11

• Mar 24, 2008

• #11

you mentioned that the drums have just been turned...by any chance did you replace front shoes at that time?maybe primary/secondary shoes mixed up??just a thought...