I noticed my jeep was pulling slightly to the pass side when i was breaking so I pushed the brake moderately and my passenger rear tire was locking up just with moderate pedal application. The other tires are not locking up and it dont pull when its driving normally with no break application. Anyone have any ideas on what could be causing this?

 

bump

 

I've had that happen a number of times on vehicles when an axle seal allows grease onto the shoes(rear drums,right?). Look under the vehicle at the back of that brake to see if it's wet.

 

Yep, likely a contaminated brake pad. Leaking wheel cylinder will do it. Pull the drum and have a look.

 

Ill pull the drum this weekend and have a look.

 

What happened? I think I have a similar problem..

 

Sounds like a bad wheel cylinder. Had the same problem and replaced mine, now probs ever since!

 

Yes it was a bad wheel cylinder. It had leaked onto the pad. Changed cylinder and cleaned/sanded pad. All good now.

 

Double on that sounds like shoe contamination. when was the last time you had the drums off to inspect clean and adjust. also if the front brakes are working as they should it may force the rears to work that much harder.

 

My fix was just the adjuster had been adjusted all the way tight. I've only had it about 1000 miles and never noticed it until I drove in the rain.
There was also a lot of gunk in there, 2 cans of brake cleen and its much nicer.

I screwed the adjusted all the way in, put it back together, then tightened it until it just touched the drums (could hear it).