Question about 1999 Oldsmobile Alero

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Don't know if the disc brakes need to be screwed back in when replacing the pads. Newer ABS brake pistons need to be turned while compressing to install new pads. Do these need to be turned while compressing?

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Yes on the rears anyway -

Posted on May 16, 2010

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1 Answer

Removing front discs


If your car has antilock brakes, changing the pads is a bit different than what most people are used to. With a normal (non-ABS) car, you just unbolt the caliper, press apart the old pads to retract the piston, then replace the pads. This procedure forces much of the brake fluid out of the caliper and back into the master cylinder. The fluid is put back once you step on the brakes.

With an ABS car, you CAN'T force the fluid back; if you do you'll damage the ABS valve body (£800). Instead, you must open the caliper bleed screw and drain the excess fluid out of the caliper while you press the piston back into the bore. This is very important! If you force the dirty, water-contaminated fluid back through the relatively fragile valve body, you'll ruin it.

Also, did you know that you are supposed to replace all of the brake fluid in an ABS car once each year? That's different from older-style cars too.

Jun 03, 2011 | 2004 Jaguar X-Type

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

1 Answer

New brake rear discs and pads on a ford mondeo 03 but can not get the caliper pisten to go back enough to fit pads


Loosen the brake fluid reservoir cap to allow pressure to escape. Use a large C clamp connecting it to the front of the piston and back of the housing. Turn the screw on the clamp to compress the brake piston then release the clamp. The piston will remain compressed allowing you the fit the housing over the new brake pads.

Jun 25, 2010 | 2001 Ford Focus

4 Answers

How do i release the brake caliper pistons to be able to fit new brake pads on a renault trafic 08 van. thank you


Renault trafic brake calipers on the front can be pushed in with a G-clamp, but rear calipers need to be wound in, if you look at the piston it has notches for a winding tool!

Jun 21, 2010 | Renault R5 Cars & Trucks

4 Answers

1996 olds aurora back brake pad replacement, how to compress the pads to get the caliper back over the pads?


Special tool is a 1" cube with tabs on each side that fits into indentations on the brake piston and can be purchased for $10-12 @ most discount parts stores. Use 3/8" ratchet with short extension and 'special tool to carefully turn piston onto internal hand brake screw. Take care to not tear dust boot. When piston is fully collapsed, make sure to align piston indentations perpendicular to brake pad as there are bumps on pad that fit into them. Also while screwing in piston either remove about 2/3 of brake fluid in master cylinder and refil afterwords or open the bleeder valve on brake piston assembly. Bleed if necessary.

Jul 18, 2009 | 1996 Oldsmobile Cutlass Supreme Coupe

3 Answers

ABS light on after replacing the front and rear brake pads .


u will need to check the wheel speed sensors behind the brake rotors to see if they got damaged or disconnected during the brake job, as long as the ABS light is on the Anti-lock brake system is disabled, regular braking without the need of ABS will feel fine.

Apr 01, 2009 | GMC Sierra 2500 Cars & Trucks

3 Answers

Cant compress piston on rear brake calipers


Use a caliper wind back tool which rotates the piston at the same time as pushing it back. Release the bleed screw to assist the wind back. If you use a brake hose clamp on the brake hose this will reduce the need to bleed the system.

Mar 23, 2009 | 2003 Volkswagen Passat

4 Answers

Replace rear brake pads on a 2000 grand marquis


rate as fixya if this is what you need. Thanks

  1. Remove the rear disc brake caliper (2K327).
  2. Remove the brake caliper bolts.
  3. Lift the rear disc brake caliper off the rear disc brake caliper anchor plate (2B582).
  1. sya~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not allow grease, oil, brake fluid or other contaminants to contact the brake pads.
    Remove the brake pads by pushing inward and rotating the pad up.
  1. NOTE: Use a block of wood or used pad to protect the piston and boots.
    Retract the caliper piston (2196) into the rear disc brake caliper.
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Mar 15, 2009 | 2000 Mercury Grand Marquis

1 Answer

2006 Ford Five Hundred anti-lock brake pad replacement


hi its rare the pads stick to the rotor but obviously this one was welded metal to metal so if the other sides not down to the metal you won,t have the same problem now getting the piston back into the caliper if you don,t have the tool its going to be fiddling but you need to get some pressure on the piston as to shove it back in not to much as you have stated it has to be screwed back in once a pressure has been applied [could try using you c-clamp ] then the slots in the piston insert something that will turn the piston it will locate and start to screw back your going to need pateince as it is fiddling with the correct tool you may need a few attemps but the other side should not be as bad as the piston has not gone past the point of return take your time and check for leaks when you have them all assembled yates210456

Oct 17, 2008 | 2006 Ford Five Hundred

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