I am having trouble with the left rear brake, seams as though the outer pad is going away at twice the speed of the inner pad. this is the second time I had to replace the pads on this axel and found the outer pad worn out, I am thinking that the piston might have some rust issues not letting it back off,any one else had this type of trouble?

You have a stuck piston. Take pads out and check the protective boots, One may be split and the piston is rusted, if so, new caliper time and brake hoses as well.

Then, you can check the parking brake shoes too.

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Regards

Warren

Currently 1965 220Sb, 2002 FORD Crown Vic Police Interceptor

Had 1965 220SEb, 1967 230S, 280SE 4.5, 300SE (W126), 420SEL

ENTER > = (HP RPN)

Not part of the in-crowd since 1952.

Yep a piston is stuck. Throw on a set of rebuilt calipers, and new hoses, flush and make sure to tighten the heck out of the caliper bolts.

While your back there yank off the disc if it hasn't been off in awhile and check/lube/clean the parking brakes. A lot of times the shoes are gone and need replacing.

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2020 GMC Sierra Denali
2007 Tiara 3200

You can rebuild the calipers with little trouble. Change the rubber brake hose while you are at it. The rebuild kits are like $20 bucks or so. Go ahead and do all four corners. What you spend on 4 rebuild kits and 4 new rubber hoses and new pads all around will be less or close to the cost of 2 reman calipers.
Very straight forward process, PLUS you have this board to help along the way if you get stuck!!!!! Do some searches on here.

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If it ain't broke take it apart and find out why.

1983 300SD, 4 speed
1994 C280
1987 300TD wagon
1996 HD Road King

Ride in Peace Eric Peterson, Harley of Macon

well thank you for every ones responce to my question, I looked up at phils and the rebuild was like $80 have to try some after market places.