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Brake Rotor pads won't fit - 1999 GMC Sierra

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Assuming the Auto Parts store gave you the correct parts for your vehicle it is most likely the Disc Piston that is causing the problem. You have to compress that piston using a Special tool. You can get it from the same auto parts store you got the pads from most likely. It will have a long flat metal strip to brace against the outer part of the caliper with a threaded adjuster that points toward the Piston itself and when you turn that down the piston will compress.

Posted on Aug 05, 2010

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1 Answer

Replace rear brake discs and pads


Depending on vehicle. Find level ground and park there. Put chocks in front and behind wheels not being lifted. Loosen lugs, jack up vehicle, set jack stands, lower vehicle on jack stands, remove lugs and wheel. Open hood remove brake fluid cap. Remove two bolts holding caliper, pull caliper off rotor disc and bracket, remove pads, place a used pad in front of caliper piston, use a c clamp to push caliper piston in caliper, remove c clamp and old pad, hang caliper up, remove 2 bolts holding caliper bracket, remove bracket, remove rotor, install new rotor, install caliper bracket, install new pads, install caliper, repeat this on other side, put cap back on brake fluid tank, remove bleeder fittings and keep pressing brake pedal until an even flow of brake fluid sprays out. Install bleeder fitting. Make sure brake fluid doesnt get on paint and is contained and disposed of correctly, top off fluid install wheels and raise car up remove jack stands, lower car and break in new pads

Nov 06, 2013 | Cars & Trucks

1 Answer

How to replace front discs and pads


Front brakes are very simple to do:
  • Pull off the front tires.
  • Remove the brake pads by removing the slide pin bolts where the piston assembly attaches to the caliper mounting bracket. The slide pin bolts are usually a 12 or 14mm bolt. Once the piston assembly is free slide the old brake pads out.
  • Compress the piston back into the caliper by using a large pair of channel lock pliers or a c-clamp. If you don't do this, you won't be able to get the new pads on.
  • Before you put the new pads on, replace the rotor.
  • Remove the two bolts for the caliper mounting bracket. They are in the back and are bigger than the slide pin bolts. Usually a 17 or 19mm bolt.
  • Pull off the caliper mounting bracket.
  • At this point the old rotor should slide right off. If it doesn't slide right off, look for a screw in the center of the rotor, some cars will have a screw there to hold the rotor on. If there's no screw and it still won't come off, try tapping it with a hammer. If you're replacing the rotor, don't be shy.
  • Put the new rotor on. Make sure to clean off any grease with brake cleaner that may be on the braking surface from packaging.
  • Put the caliper mounting bracket back on.
  • Put the new brake pads on. Make sure to use some anti-squeal grease on the back of the pads.
  • Put the caliper assembly back on with the slide pins. Grease up the slide pins as well.
  • Put the wheels back on.
  • Make sure to pump your brakes 10 - 15 times before you drive off. Because you compressed the piston back into the caliper, the piston will not be contacting the brake pads unless you pump the brakes.

Good Luck!
~Brandon

May 27, 2011 | 2002 Mitsubishi Lancer

2 Answers

I replaced front driverside brake pads and the caliper will not fit why ?


If the piston was not compressed completely back into caliper, ( I use a large C-clamp,) then the caliper/brake pads will not fit over the Rotor. Also when you compress the piston back into the caliper be sure the brake fluid resevoir doesn't overflow when the fluid returns during the compression process.

Apr 15, 2011 | 2004 Ford F350

1 Answer

How can I change the rotors and brakes on a 2006 Cadillac?


Front brake
Step 1: Identify Front Disc Brake Components
brake_pads_rotor.jpg
Front Wheel Drive Brake Assembly
Most front disc brake components include: brake rotor, brake pads, brake caliper, caliper mount and brake flex hose. Brake service usual occurs between 20,000 and 40,000 miles depending on driver habits, road conditions and brake pad/ rotor materials used.
Step 2: Remove Brake Caliper to Replace Pads
brake_pad_set.jpg
Removing Brake Caliper Mounting Bolts
Locate primary caliper mounting bolts; apply wrench pressure counter-clockwise (When looking at the head of the bolt) to remove the bolts, upper and lower. Make sure the bolt threads are in good shape and replace if necessary.
Step 3: Remove Front Brake Caliper
remove_brake_caliper.jpg
Remove Front Brake Caliper
After removing the primary caliper mounting bolts lift the brake caliper off of the rotor and then tie or secure to the side, being careful not to bend or kink the brake caliper flex hose. Thoroughly inspect brake caliper and brake hoses for leakage, cracks or chaffing and replace as needed. Next remove the brake pads (If not mounted in the caliper) and secondary caliper mounting bolts. Notice how great protective gloves work, most technicians use them on the job today.
Step 4: Remove Brake Pads
remove_brake_pads.jpg
Remove Front Brake Pads
Once the brake pads have been removed, make sure if there is anti rattle hardware to transfer to the new brake pads. Some brake pad manufacturers will include the proper lube (Caliper slides) and anti-rattle hardware to ensure proper performance of their product.
Step 5: Remove Caliper Mount
remove_brake_pads_holder.jpg
Remove Caliper Mount Bracket
Finish removing secondary caliper mount bolts and remove caliper mount. Note: clean and lube caliper slides and pad friction surfaces of all foreign material or build-up.
Step 6: Remove Brake Rotor
brake_rotor.jpg
Remove Brake Rotor
With the caliper mount out of the way you can now remove the brake rotor. Sometimes it can get stuck so you may need to tap it with a hammer or use penetrating oil to free it up. Some manufacturers use small screws to hold the rotor on as well. Clean and inspect wheel studs, replace if any are damaged. Also clean bearing hub rotor mount surface to ensure the proper mounting of the new brake rotor. Inspect the ABS sensor wheel for cracks or damage and replace as needed.
Step 7: Depressing the Brake Caliper
compress_caliper.jpg
Resetting Brake Caliper
To install the new brake pads you must retract the brake caliper piston. Remove the master cylinder lid or open the brake caliper bleeder screw to allow excess brake fluid to be released if necessary. Install C clamp tool and gently tighten clamp until caliper piston is fully depressed. Note: use old brake pad to protect the caliper piston. Close the bleeders once the piston is retracted completely
Step 8: Installing New Brake Rotor
new_brake_rotor.jpg
Install Brake Rotor
Install new brake rotor, the new rotor is manufactured with a protective film over the rotor to keep it from rusting, remove protective film with brake cleaner before installing; also after the brake job is complete you may experience a small amount of smoke from the rotor when first used. This is normal and will go away after the first couple of uses.
Step 9: Installing New Front Brake Pads
new_brake_pads.jpg
Installing New Brake Pads
Reinstall the front brake caliper mount, and then install front brake pads. Make sure the pads are seated properly in the caliper mount; it must be a close fit to work properly..
Step 10: Reinstall Front Brake Caliper
front_brake_rotor_pads.jpg
Re-Install front Bake Caliper
Reinstall front brake caliper and reinstall caliper-mounting bolts, recheck all mounts and mounting bolts. Check the caliper slides to be sure there is no bind and that the caliper moves freely back and forth on the caliper slides. Bleed brake system per manufacturer's specifications to relieve any air trapped in the system. Before driving the vehicle, push the brake pedal down and let it up slowly, repeat until normal brake pedal operation resumes, this operation is forcing the brake pads to travel to the brake rotors.

Dec 18, 2010 | 2006 Cadillac STS

1 Answer

How to remove front rotor


remove front wheel, undo the retaining bolts from the brake caliper and remove it, do not undo the fluid line that runs to the caliper or you will have to bleed the brakes, just tie the caliper up under the guard somewhere
remove the metal cap from the middle of the rotor, remove the retaining pin from the nut and remove the wheel bearing from the stub axle, the rotor should now be free to remove from the car.
fit the new rotor, grease the bearings if required and tighten to remove any slop in the rotor, once that is done you can put the retaining pin back in place.
You may have to press the caliper piston in to get enough clearance to fit the brake pads over the new rotor, this can be done with a "G" clamp, just remove the outer pad, place a small piece of wood over the face of the inner pad where the "G" clamp is going to sit to protect the pad and wind the clamp to compress the piston, replace the outer pad and fit back into the caliper before you put the caliper over the rotor and bolt it on
hope this helps

Jul 08, 2010 | 1998 Jaguar XJ8L

1 Answer

Replace rear brake pads


Rear disc brake pads offer better performance and are not as affected by moisture like conventional brake shoe style brakes are. Rear disc brakes are similar to front disc brakes. The main difference is that rear disc brake systems must incorporate the emergency brake system. There are two methods widely used for the emergency brake with rear disc systems. The first system is a brake shoe inside the brake disc that is actuated by the emergency brake lever. The second is a screw style actuator inside the brake caliper. When activated the brake pads are forced into the brake disc and held tightly by the emergency brake lever.
READ COMPLETELY BEFORE STARTING
Step 1 - Identify Rear Disc Brake Components
rear_brake_pads.jpg Rear disc brake assembly includes; rear brake disc, rear brake pads, brake caliper mount and a caliper mounting screw. (Note: Some vehicles do not have the rotor mounting screw.)
Step 2 - Removing the Rear Brake Caliper Mount Bolts
rear_brake_pads_2.jpg To replace rear brake pads and rotors the rear brake caliper needs to be removed. First loosen the rear brake caliper mount bolts and remove them. Turn counter clockwise.
Step 3 - Lift Rear Brake Caliper from The Caliper Mount
rear_brake_pads_3.jpg After the caliper mount bolts have been removed, gently lift the brake caliper from the caliper mount. Inspect the caliper slides; they should move freely in the caliper mount. Remove rear brake pads and hardware.

Step 4 - Removing Caliper Mount Bolts
rear_brake_pads_4.jpg With a socket wrench or other appropriate removal tool, loosen the rear brake caliper mounting bolts. Remove bolts and lift the caliper mount and remove it from the vehicle. Remove the retaining screw from the disc mounting hole. Tap the rotor gently to release any rust that has accumulated between the rotor and bearing hub. Lift brake rotor from wheel hub holding on tightly, using both hands. You do not want to drop the rotor.

Step 5 - Removing Rear Brake Rotor
rear_brake_rotor.jpg Remove the retaining screw from the disc mounting hole, tap the rotor gently to release any rust that has accumulated between the rotor and bearing hub. Lift brake rotor from wheel hub, hold on using both hands and do not drop.

Step 6 - Install New Brake Rotor
rear_brake_rotor_2.jpg Check the new rotor against the old brake rotor to make sure they are the same size. Clean the mating surface on the wheel hub before the new brake rotor is installed. Reinstall rotor retainer screw.
Step 7 - Reset Rear Brake Caliper
rear_brakes_7.jpg Before new brake pads can be installed, the rear brake caliper must be reset. The reset tool winds the piston back into position so the new brake pads will fit. This style of brake caliper will not compress with a clamp tool; it can only be reset with the proper reset tool.
Step 8 - Reinstall Rear Caliper Mount and Install New Rear Brake Pads
rear_brake_rotor_3.jpg After the caliper has been reset, reinstall caliper mounting bolts and make sure the bolts are tight. Then match up the old brake pads to the new brake pads. They should be exactly the same except, of course; the old ones will be worn out. Check the new brake pads for proper fit and install any brake hardware that is required.
Step 9 - Remount Rear Brake Caliper
rear_brake_rotor_4.jpg Reinstall the brake caliper, align brake pad hardware and reinstall caliper mounting bolts. (Note: align the rear peg of the brake pad to the groove in the caliper piston.) Recheck and retighten all caliper and caliper mount bolts. Bleed brake system to relieve any air in the system. Before driving the vehicle, push the brake pedal down and let it up slowly. This operation forces the brake pads to travel to the brake rotors. DO NOT DRIVE VEHICLE until proper brake pedal operation resumes. When test driving vehicle listen for any unusual noises during the operation of the brakes.
WARNING! Always have the vehicle under inspection on level ground, in park with the emergency brake on. Always wear protective eyewear, gloves and necessary clothing before inspection or work begins. Never crank an engine over when anyone is near the battery or engine. Always have an operational fire extinguisher close by, obey all first aid instructions in the event of an injury. Never stand in front or behind a vehicle when cranked over or running. When engine is cranked over keep hands and clothing away from rotating components. Never move a car without proper brake pedal operation.

Jun 01, 2010 | 1995 Saab 900

1 Answer

How to replace rear brake pads on 2006 dodge sprinter 3500


replacing brake pads is pretty simple but because the results of not doing it correctly is pretty severe (can you say accident) I recomend you get a Haynes manual for your vehicle. Generally they can be purchased for approximately $20 at autozone. The basics for replacing brake pads (as opposed to brake shoes) is to losen the brake caliper so it can be moved up off the brake rotor. Then the old pads pop out. Next the brake caliper piston is pushed back into the caliper and the new pads fit in. Now the caliper is placed back over the brake rotor. Again, get the manual.

Feb 10, 2010 | 2006 Dodge Ram 3500 Truck

1 Answer

Changing the rotors how do you get them off


remove the wheel, remove the brake caliper (whole) just remove the two mounting bolts that hold it to the "hub"
theres one or two screws in the face of the rotor, unscrew them, pull it off - a rubber mallet might help!
Clean up the hub with a wire brush before fitting the new rotor. screw in the 2 screws on the face of the new rotor. Fit new brake pads and squeeze the pistons open to slide the caliper and pads over the new rotor, refit the two mounting bolts to the brake caliper, press the brake pedal to seat the pads on the rotor. refit and tighten the wheel, go for short drive and test the brake gently, if all is fine start on the second rotor, just repeat the process again.
LEAVE FEEDBACK PLEASE! Good Or Bad.

Jan 21, 2010 | 2002 Nissan Pathfinder

2 Answers

1999 Chev Blazer 6cyl 4.3L 4WD Rear Brake assy - I have replaced 2 Brake Pads and Rotor. After replacing and a test drive... Its making a scrapeing noise and now the rotor is extreamly hot and descolored....


I replaced the rotors and pads on my right hand drive Blazer and had the same problem ,dont worry in a couple of days normal running the pressure goes away and you dont get the heat problem.
Its just the new pads bedding in.

J.C.
U.K.

Jul 17, 2008 | 1999 Chevrolet Blazer

1 Answer

Front Rotoe removal 1990 Toyota 3Runner


Take off the disk pad, release the pressure.
1. Loss the brake fluid small fitting on the cylinder, then use one hand slowly loss the fitting and use another hand with flat screw driver pressure the brake pad toward the piston of the cylinder AT THE SAME TIME , as soon as you release the pad a little bit, close the fitting right away, DO NOT LET THE AIR GET INTO YOUR BRAKE LINE. After you release the pad, TIGHT the fitting.

2. Take off two screws behind the cylinder which connected to the body and remove the cylinder first and then take off the rotor.

3. When you put back, don’t touch the fitting, after you finish it, check everything is O.K. then start the car, pump the brake several times, until you feel the brake is normal.


For your safety, use emergency brake and also put something behind your rear wheel to completely stable the car.

Good luck, hope this can help you.
Frank

May 24, 2008 | 1990 Toyota 4Runner

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