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Why would the brakes be locking on?

Since changing the front brake pads the brakes seem to be locking on. We changed the front left caliper thinking that was the problem. But its still doing it.

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Have you cleaned the pad slides and are the pistons releasing, when you push the pedal the fluid forces the piston forwards some times they do not release as they should but other times the piston pushes against the pad which then pulls the opposite side applying that pad and that is were it locks so its the outside pad jamming not the piston side I had that on my Iveco on all 4 wheels the pads got that hot the friction material detached from the steel, if you do clean the slides remember to use copper grease not normal.

Posted on Nov 11, 2014

Testimonial: "Thank you for your responses. But it turns out he put the inners on the outside and outers on the inside. Silly! But they weren't labelled clearly. So wasted money on buying new caliper."

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Air in the breakline? did you bleed it after you were done?
otherwise something is sticking, time to get out the copper grease!

Posted on Nov 11, 2014

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2005 Chevy Equinox left front brake caliper locks up


Your vehicle should have rear drum brakes...They have to be adjusted manually for correct adjustment...People say they self adjust but it is not good enough....by adjusting the rear it will decrease the pressure on the front and deliver equal braking...This will help eliminate caliper pressure overload....I'm not saying that is your caliper problem but it is insult to injury and will save the life of front brakes.....Now your caliper problem..FYI..A rule of thumb is anytime you change a caliper you should always replace both calipers to have identical braking pressure".The same with brake hoses and rear wheel cylinders.....The caliper that froze in the first place got hot and boiled the brake fluid and quite possibly partially collapsed the caliper brake line/hose inside as Clint and Frank stated....I am going to guess that the first caliper froze under normal conditions however got hot enough to internally damage the caliper line/hose...Then you may think of the pressure regulator being bad in which case could be a problem......So this is what you do".Since we know the left front caliper line/hose has been exposed to heat it needs to be replaced anyway...also the fluid was boiled and it needs to be changed / bled...The new caliper that froze should be ok unless it was bad off the shelf which is rare but possible."..Change the line/hose,bleed the brake system and let the mechanic test drive before you pay and leave..The mechanic will know before driving if the new caliper that froze is bad or not by rotating the wheel...This is the cheapest way...And you will know if the pressure regulator is bad or not just by bleeding system........I hope this helps....."Brooks/Metalpoet....."....

Jun 13, 2014 | 2005 Chevrolet Equinox

2 Answers

1992 Suzuki sidekick has front brakes locking up after a short drive. Problem started after right front caliper piston was frozen and left front caliper slides were frozen. Replaced right front caliper and...


stop and do not drive, get a brake man, in the loop, danger !


this is cause by the MC, the master cylinder, no ABS in 92
not replacing relic calipers in pairs is dumb, sorry risking life and limb using old 20 year old calipers is not bright. a fact, not opinion.
are both caliper locking, at ONCE?
that is the key question .
reasons. (answer for BOTH clipers locking at once)
1: bad calipers ,no piston lasts for 21 years, ever. (relic)
2: the MC piston is not retraced,

#2 is caused for 2 or 3 reasons,,,,
2a; brake pedal adjusted such that the factory play behind piston rod is not zero or minus, causing the MC to lock hydraulically.
2b; the booster was changed and the PP mechanic (weak) did not
RTM , they did not adjust the new booster, calibration ring stated in the FSM.
3: if one caliper (good) locks the rubber flex line is breaking down
inside and is clogged. 21 year old lines are not good to trust.
not life and limb or mine when you hit me...
that too, is fact.

the guide pins must be free, and antisieze lubed or with special
99cent OTC brake grease (very high temp rated,) ask.
the pistons rust. DOT3/4 is hygroscopic and will rust in 21 years.
not a guess. fact.
One other point, 21 year old caliper seals will no longer have
stiction, they fail to retract the piston and the pad drag. wasting fuel and pads. new seals. better, newly rebuilt Raybestos calipers
will make them safe.
fixing brakes in a serial fashion is asking for trouble.
do not cheap out on brakes.

Aug 21, 2013 | 1992 Suzuki Sidekick

1 Answer

Overheating brakes


I think the problem is the brake pad or caliper, brake pad are too thick or the caliper are not good casted.
First try to confirm if you get a right brake caliper ,then confirm the brake disc ,brake pad, if they all ok, tear down the bracket of caliper, put into brake pad, then put into brake rotor.
http://www.fiverhope.com/category-4-b0-Brake-caliper.html

Jun 27, 2013 | Cars & Trucks

1 Answer

92 cadilac left front brake caliper locking up installed new caliper same problem


check your pressure hose connected to the caliper,also check whether your brakes master cylinder is not faulty,abs sending unit ,or if you have changed the brake pads in front see whether the back metal side of the pad is fair face and not any curve or uneven surface,because had happened to me .

Aug 25, 2012 | Cars & Trucks

1 Answer

When applying brake pedal in a quick stop seems the front right wheel is locking up what could be the problem


Sounds like the right front brake caliper is locking up. Make sure they change the brake hose, when you have the caliper replaced. Both sides should be done at the same time, along with the brake hoses and pads. They will also have to check the rotors, due to the heat from the brake locking up, they warp and may not be reusable.

Oct 25, 2010 | Nissan Sentra Cars & Trucks

2 Answers

I have sticking calipers on front brake pads of a 2007 chevrolet silverado pick-up. The pads are new.


you have to replace caliper if its sticking could damage ur rotor as well as strain ur engine because of the locking up

Feb 20, 2010 | 2002 Chevrolet Blazer

1 Answer

Good night please how can I change brake from my car saturn 1997 fron will



REMOVAL & INSTALLATION

Front Disc Brakes
See Figures 1 through 8
Always replace the brake pads in sets, meaning BOTH front wheels.
  1. Raise the front of the vehicle and support it safely using jackstands, then remove the front wheels.
  2. Remove the lower caliper lock pin.

The Saturn brake pad replacement procedure states that after removing the lower caliper pin, you can simply pivot the caliper to a vertical position in order to remove the brake pads. This procedure, when attempted on a 1992 SC with ABS, looked as if it would place excessive stress on the brake line. No changes in steering position seemed to alleviate this tension, so a full pivot for pad removal was not attempted. Another option is to remove the upper caliper pin, but not the lower pin, and simply pivot the caliper down for possible access. However, to prevent damage to the brake line you may wish to remove both guide pins and support the caliper assembly from the strut using a coat hanger or length of wire.
  1. Pivot the caliper up or down on either guide pin or remove both guide pins and support the caliper from the strut using a coat hanger or length of wire.
  2. Remove the 2 brake pads and the pad clips from the caliper support Discard the old pad clips.
  3. Check the caliper pins, pin boots and the piston boot for deterioration or damage.

To install:
  1. Either by hand or using a C-clamp, bottom the piston all the way into the caliper bore.
  2. Carefully lift the inner edge of the piston boot by hand to release any trapped air.
  3. Install new pad clips into the caliper support.
  4. Install the inner and outer brake pads into the support. If installed, remove the temporary support wire from the caliper.
  5. Pivot or position the caliper body on the upper guide pin into position. Compress the boots by hand as the caliper is positioned onto the support.
  6. Lubricate the smooth ends of the lock and guide pins with silicone grease, then install the pin and tighten to 27 ft. lbs. (36 Nm). Do not get grease on the pin threads.
  7. Repeat the procedure for the opposite side brake pads.

Oct 10, 2009 | 1997 Saturn SL

1 Answer

Front brakes not releasing properly.


Sounds like the caliper needs replaced. Sometimes the pistons lock in the caliper and cause the brakes to drag. When the mechanic changed the brakes before, he pushed the pistons in all the way to accomodate the new brake pads. Now that they are wearing back down, it is getting to the warped spot in the caliper and starting to stick.

Jun 25, 2009 | 1998 Ford F150 Regular Cab

2 Answers

2001 brake pad replacement 2001 nissan quest


The hard part is pressing the caliper piston abck into the caliper so you can get the new, thicker pads over the rotor. A large C Clamp works best.

SECTION 206-03: Front Disc Brake 2001 Villager Workshop Manual
REMOVAL AND INSTALLATION Pads —Front Disc Brake Removal
  1. Remove the wheel and tire assembly. For additional information, refer to Section 204-04 .
  1. Remove the front disc brake caliper bolts. torx bit. T20?
  1. Support the front disc brake caliper from the front strut and spring assembly using mechanics wire.
  1. Remove the front disc brake pads.
    1. Remove the outboard front disc brake pad.
    1. Remove the inboard front disc brake pad.
Installation
  1. s1v~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Make sure the master cylinder reservoir does not overfill and spill brake fluid while retracting the front disc brake caliper piston.
    NOTE: It is necessary to fully retract the front disc brake caliper piston in the bore before installing the front disc brake pads.
    Install the front disc brake pads.
    1. Install the inboard front disc brake pad.
    1. Install the outboard front disc brake pad.
Caution. The outer pads are left and right. put left on driver side.
  1. Position the front disc brake caliper on the front-wheel knuckle and install the brake caliper pin bolts.
  1. s1v~us~en~file=ani_caut.gif~gen~ref.gif WARNING: It is necessary to depress the brake pedal several times to position the front disc brake caliper piston before driving the vehicle.

Apr 23, 2009 | 2001 Nissan Quest

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