pads and rotors replaced now caliper sticks on 95 discovery

[jmonsrvr]

.....front passenger side caliper possibly sticking. took it to shop to get brakes and rotors replaced. couple of days later i noticed that when i hit the brakes hard at speed it pulled to the left. also i have the most annoying squeal when braking just before a stop and going really slow that was never there.

could the shop have caused the caliper failure (possible- will check this weekend).


it only pulls when hard braking at speed.


thanks gang...need a brakes expert for a 95 discovery

cheers

 

[DarylJ]

Brought my truck to a shop and now I'm not happy with the work they did. I'd like to accuse them of damaging 17 year old calipers.

Seriously....your first call here is to the shop. BRING IT BACK. Good shops will be happy to address your concerns about the repair.

 

[Blue]

Anything leaking in the vicinity of that front passenger rotor? Fluid on the rotor will render it nearly useless resulting in pulling to the opposite side.

 

[I HATE PONIES]

Shouldn't a sticking caliper pull all of the time except while braking?

Is one rim getting hotter than the other?

 

[jmonsrvr]

thanks for the replys.. this is a shop i frequent when needed. I called them the day i found out about the issue. they will totally work with me. I wanted to know for my own piece of mind if this is something that could have happened during the rotor and brake replacement
anyway...

@ daryl j- calipers are two years old not 17, thank you for stating the obvious and for your non related story. shame on you for trying to put that on a shop.

@blue nothing leaking. thats the first thing i checked- no fluid on inside of tires, around calipers, etc etc.. bone dry.

@I hate ponies- you would think right. From my understanding is that caliper pistons can "stick" sometimes and other times they can just be totally stuck.

I have not had time to pull the tire and look for myself, but i will tomorrow. (hopefully)

truck will go back to shop later this week when i get home.

 

[p m]

If one caliper is sticking, you can usually tell which one by comparing wheel temperatures near the hub after a few city blocks. It happened to me more than once.

As far as remedy - I am not sure there is one beyond a new caliper. The caliper cylinder walls and pistons are wearing out, allowing the pistons to extend ever so slightly cocked, and not return.
Clean and lightly lubricated pads' retaining pins and good springs may help things.

 

[DarylJ]

@ daryl j- calipers are two years old not 17, thank you for stating the obvious and for your non related story. shame on you for trying to put that on a shop.

truck will go back to shop later this week when i get home.

So you don't understand sarcasm directed at you and are following my advice.

Well, whatever gets you there.

 

[I HATE PONIES]

@I hate ponies- you would think right. From my understanding is that caliper pistons can "stick" sometimes and other times they can just be totally stuck.

Totally stuck should heat one rim and not the other and pull constantly. The sometimes stick would do the same when they are stuck.

What likely happened here is that this piston was quite happy in it's comfort zone with the old pads. When installing the new pads the caliper piston was likely forced out of it's comfort zone. It happens when a caliper piston won't retract far enough to allow the caliper to fit over the new pads. If you force the piston back into the recently unused area to get the caliper on it will try to remain in it's comfort zone. The caliper doesn't nescessarliy stick it just can't retract as far as it needs to.

 

[jmonsrvr]

@I hate ponies- you would think right. From my understanding is that caliper pistons can "stick" sometimes and other times they can just be totally stuck.

Totally stuck should heat one rim and not the other and pull constantly. The sometimes stick would do the same when they are stuck.

What likely happened here is that this piston was quite happy in it's comfort zone with the old pads. When installing the new pads the caliper piston was likely forced out of it's comfort zone. It happens when a caliper piston won't retract far enough to allow the caliper to fit over the new pads. If you force the piston back into the recently unused area to get the caliper on it will try to remain in it's comfort zone. The caliper doesn't nescessarliy stick it just can't retract as far as it needs to.

ahh very, interesting.. and that very well could be since that rover has not seen new brakes for a couple of years and has been spending most of its time down in southern baja doing trips. when i got the truck back to the states a week ago the front pads where pretty much gone and the front rotors where beyond specs. actually sketchy when you think of it. coming over the mtns just south of ensenada going south or north with no brakes = death.

I'll be getting a new caliper to replace the faulty one, but for my own memory/data banks wanted to know what could cause this...

thanks for all the replys. including yours daryl. my reply to you was sarcastic as well hard to convey over an online board- even with a funny face next to it. cheers