Brake Caliiper Sticking

91 Camry LE with all wheel disc brake and ABS has 67k + miles brought in for NY State Inspection today.

Dealership technician/mechanic reported that right rear disc pad worn significantly more so than the left rear pad. He claimed that right wheel felt difficult to turn while left wheel was easier. Diagnosed as a Sticking caliper at right rear brake.

[1] Would application of a lubricant and/cleaning around right rear brake caliper possibly solve this observed problem ? [2] Is it wise/necessary to replace both calipers (if only the right rear caliper is faulty)?

TNX.

Vince Long Island, NY

Reply to
Vince
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You can try this. I had success with one caliper, but had to replace another.

If you have a Dremel or similar tool, GOOD! this will save you from finger cramps.

Get some caliper grease, that expensive Moly-Kote is good, but...expensive... You can get an Oz or so for about $3 at a parts store.

Remove the whell, caliper, etc. like you would to replae the rotor. Support the caliper, and remove the slide by any means possible. I have hammered them, pounded them, used vice-grips, etc (gee, maybe that's why it didn't work on one caliper!)

Try not to damage the boot. You can reuse it if it's not ripped.

Take your Dremel and one of the barrel-looking sanding drums and sand the rust off the inside in the hole in the caliper. Sand the rust off the pin using Emery cloth. If you don't have a Dremel, wrap some Emery cloth around a deep socket that fits inside the hole and sand away. Sand the inside of the "pin hole" until it's bright and shiny, likewise with the pin. Get some 1200-1500 grit sandpaper and sand the pin nice and smooth, removing any grooving (On a Sunday afternoon...oh, sorry...) from the pin. Put a small amount of Moly-Kote on the inside of the "pin hole". Clean the boot and reinstall. Put a small amount Moly-Kote at one end of the boot, and slide the slide in from that side. It should slide smoothly, but not loosly. If not, grind away some more!

Good luck!

Reply to
Hachiroku

I would be wery careful with that Dremel, it might well loosen it up, but you also might get a leak. I have on several occasions with success used a power drill with a honing tool. That is a like a wisk with 3 adjustable spring loaded arms with small honing stones that goes into the cylinder. Use very light pressure and lots of oil. A quick Google search for "Caliper honing tool" came up with this first

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By the way, Such things would probably not happen if the brake fluid was properly changed at the prescribed intervals, and you actually should leave repairs on security equipment to professionals.

Good luck any way! Asbjørn

Reply to
Asbjørn

Yes, if you follow Hachiroku or Asborn's suggestions. Cleaning and lubricating involves reoving the caliper slides and bolts.

It is not necessary to replace both calipers, but I do recommend replacing brake pads and/or rotors as a set.

I would also recommend replacing the brake fluid if it has not been changed in 5 or more years.

Reply to
Ray O

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