Rear passenger drum locks up...

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MancheMike

NAXJA Forum User

Location

Denver, CO

• Jul 11, 2011

• #1

2001 XJ. Tap the brakes at 15mph or under and the right rear locks up.

I backed off the adjuster, and it worked great for a few days. Now, its back to locking up again.

Popped off the drum, it looks good, as do the shoes. No signs of fluid leak anywhere.

Ideas/opinions? Wheel cyl? Bad adjuster? how can I keep it from ratcheting itself up to the point it locks 'em up?

 

old_man

NAXJA Forum User

Location

Loveland, Colorado

• Jul 11, 2011

• #2

Did the brakes recently get replaced? If so it sounds like the leading and trailing brake shoes got swapped.

 

M

MancheMike

NAXJA Forum User

Location

Denver, CO

• Jul 11, 2011

• #3

old_man said:

Did the brakes recently get replaced? If so it sounds like the leading and trailing brake shoes got swapped.

Click to expand...

Not to my knowledge...

Picked this one up wrecked, it sat for the last 4 months (at least). No idea what the prior owner/owners had done or not.

Is there an easy way to tell by looking at them which is which? Different dimensions?

 

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fulltimer

NAXJA Forum User

Location

spring valley,Il

• Jul 12, 2011

• #4

smaller shoe in front , by smaller i mean shorter

 

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clean96XJ

NAXJA Forum User

Location

CT

• Jul 12, 2011

• #5

recently and in the past had rear drum lockin up issues.

Turns out the OTHER side(nonlocking up side) was the issue.

open other side up.
check for leaks, misaligned parts, wear on pads..

my problem was a misaligned adjuster bracket.

takes 15 min JUST DO IT!

 

M

MancheMike

NAXJA Forum User

Location

Denver, CO

• Jul 12, 2011

• #6

I'll check the size of the leading shoe, and will examine the oppo side for issues also.

Any other ideas/suggestions?

 

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BrokenSockets

NAXJA Forum User

Location

Ayr, Ontario

• Jul 12, 2011

• #7

Bad soft line not allowing pressure to bleed back?

 

Matthew Currie

NAXJA Member #760

Location

Vermont, land of big clay

• Jul 13, 2011

• #8

Check the adjustment again on both brakes. I've found usually that one brake locks up when the other has failed to adjust.

 

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deucestudios

NAXJA Forum User

Location

Malvern, PA / JFC

• Jul 13, 2011

• #9

check the hard line running across the axle for dents or kinks.
make sure the other side adjuster is on the right way, and is working.

 

M

MancheMike

NAXJA Forum User

Location

Denver, CO

• Jul 13, 2011

• #10

clean96XJ said:

recently and in the past had rear drum lockin up issues.

Turns out the OTHER side(nonlocking up side) was the issue.

open other side up.
check for leaks, misaligned parts, wear on pads..

my problem was a misaligned adjuster bracket.

takes 15 min JUST DO IT!

Click to expand...

Had a relative take it apart today (I was at work). According to his email:

"Think I found it… cable aligning adjuster was out of guide on driver side"

 

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clean96XJ

NAXJA Forum User

Location

CT

• Jul 14, 2011

• #11

my problem was on drivers side too.
swear i installed it correctly.

suspect like too much slack in the cable when releasing after braking hard.

keeping an eye on problem.

 

Matthew Currie

NAXJA Member #760

Location

Vermont, land of big clay

• Jul 14, 2011

• #12

clean96XJ said:

my problem was on drivers side too.
swear i installed it correctly.

suspect like too much slack in the cable when releasing after braking hard.

keeping an eye on problem.

Click to expand...

A common problem with the aftermarket parts is that the pivot (that little guide that hooks under the top brake spring) does not have a deep or tight enough spigot to stay in the hole of the brake show as you put it all together. It falls slightly out of the hole, but the spring is still able to hook through it. It looks pretty good as you're assembling it, but leaves the cable slack. It can be hard to notice unless you're keeping a close eye on the position of the adjusting pawl. It will usually stay together all right once it's together right, but it's a poor design. The OEM ones were pressed into the shoe a little better, I think.