Question about 2003 Audi A6

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Brake caliper piston

I am putting new rotors & pads on my audi a8.
is there an easy way to screw the piston back into the caliper?

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Yes it is with the Audi caliper return tool. But you can also use a proper spring style spanner wrench but this is balky at best. If you try to use a pliers you will marr the piston walls thus causing you to have to buy more parts. The same caliper too, or at least a similar one is used for Porsche and it should work also. I have not see a generic tool that fits the European cars well but you may find one, that depends on where you are located at.

Posted on Nov 01, 2008

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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

Change brake pads on a 1995 Ford escort wagon


Its not as hard as you think. Loosen your lug nuts on the tires. jack up the vehicle. PLEASE use jack stands(safety first). remove the lugs, take off the tires. Open the hood(reason coming). Now you need a ratchet, star head socket, small extension, flat tip screw driver, a large C-clamp, and the new brake pads. With the ratchet, small extension, and socket, behind the caliper, are 2 bolts. Fit the socket inside the bolts and remove them. BEFORE you take the caliper off, put the flat tip screw driver between the rotor (large flat disk the pads are against), and the pad. Lightly pry the pad away form the rotor. Now remove the caliper. remove the old pads. Now very important, check the rotor. Make sure that its smooth. No gouges in it. If there are, REPLACE them. Remember, safety first. Now undo the cap on your brake fluid reservoir. Now on the piston on the caliper, place the C-clamp and tighten. You will compress the piston back down into the caliper. When all the way down, remove the clamp. Now put the new pads on, and put the caliper back on. tighten the 2 bolts, and put the tire on, Its that easy, Oh, put the bake fluid cap back on. The reason you open the cap is if there is too much fluid in the lines when you compress the piston, it won't damage the brake fluid cap on the reservoir.

Dec 27, 2010 | 1995 Ford Escort

2 Answers

Woh can i change brake disks and pads on audi a8 2005, rear hand brakes aon this model r electric and the piston on the caliper wont open to allow the new discs and pads into place. is there any way that i...


I'm assuming you have Lucas calipers, On that type of caliper you have to depress the piston and at the same time turn it clockwise.
You have to have the bleeder screw open when you do this.
I took a large size C-clamp to clamp down on the piston,then used a giant pair of channel locks to turn the piston.
You have to keep adding more pressure to the clamp while doing this it's somewhat awkward.
You must screw the piston all the way down for the new pads to fit.
Good luck,Gary

Dec 01, 2010 | 2005 Audi A8

4 Answers

Put new pads on my 05 ford excursion 4x4 and I cant get the caliper to go back on the rotor. there are 3 pcs involved, the rotor, the caliper, and a bracket that the caliper mounts to. first I put on the...


youll have to clamp the brake hose,undo the bleed screw,and push the piston[s] back in,then shut off bleed screw,undo clamp on hose,and try assembly again.bracket first,then pads into bracket,then slide caliper over pads,and then put bolts holding caliper back in ,with a bit of grease on the slides.

Jul 01, 2010 | 2005 Ford Excursion

1 Answer

Brake pad replacement 2004 audi a4 and rotor how do i do and what tools are neccessary?


YOU NEED REMOVE A LITTLE BRAKE FLUID FROM MASTER CYLINDER.THEN YOU RAISE VECHICLE SAFELY.SUPPORT IT WITH JACK STAND.MAKE SURE VECHICLE IS ON LEVEL SOLID GROUND.REMOVE TIRE OR WHEEL.THEN YOU NEED A LARGE C - CLAMP.PLACE C - CLAMP OVER BRAKE CALIPER AND BRAKE SHOE BACKING.TIGHTEN C - CLAMP JUST ENOUGH PUSH CALIPER PISTON BACK IN CYLINDER BORE TO REMOVE CALIPERS FROM ROTORS.TO REMOVE BRAKE CALIPER YOU NEED 2 OPEN AND BOX END WRENCHES ONE TO HOLD CALIPER SLIDE PINS AND THE OTHER WRENCH FOR LOOSEN CALIPER BOLTS.THEN YOU REMOVE CALIPER AND REPLACE FRONT BRAKE SHOES.IF YOU NEED TO REMOVE BRAKE ROTORS JUST REMOVE THE BRAKE CALIPER CARRIER SUPPORT BOLTS THE REMOVE THE BRAKE CALIPER CARRIER SUPPORT THEN REMOVE ROTOR.YOU NEED TO REPLACE BOLTS WITH NEWS AND USE LOCK TIGHT.THEN YOU PUT IN NEW BRAKE PADS IN CALIPER PUT CALIPER BACK ON SUPPORT CARRIER.REPLACE WITH NEW BOLTS USE LOCK TIGHT THEN TORQUE BOLTS TO 26 FT LBS.MAKE SURE MASTER CYLINDER COVER IN PLACE.WHEN YOU FINISH REPLACING BOTH FRONT BRAKE PADS PUMP BRAKE PEDAL TO SEAT BRAKE SHOES AGAINST BRAKE ROTORS SO YOU WILL HAVE FIRM BRAKES WHEN YOU APPLY THEM. THEN CHECK YOUR BRAKE FLUID LEVEL IN MASTER CYLINDER MAKE SURE ITS NOT LOW. MAKE SURE YOU HAVE FIRM BRAKES BEFORE DRIVING.IF YOU HAVE ANY PROBLEMS CHANGING FRONT BRAKE PADS YOU CAN GO TO ANY AUTO PARTS STORE AND BUY A HAYNES REPAIR MANUAL.

Jun 16, 2010 | 2004 Audi A4

2 Answers

How easy it to change front brake pads on a toyota rav 4


not hard at all.remove tires.then remove 2 screws either 12mm or 14mm that hold the brake caliper in place.remove caliper but DO NOT disconnect the brake line from the caliper.get a C-CLAMP in order to get the caliper piston pushed back in.remove old brake pads and install new ones in the same order as the old ones were removed.you will want to check the rotors to make sure they are in good condition before you install the new pads,then put caliper back on and tighten screws to specs.do the same on the other side and always remember to PUMP YOUR BRAKE PEDAL A FEW TIMES IN ORDER FOR THE CALIPER PISTONS TO ENGAGE ON THE NEW PADS. hope this info helps.good luck and take care, manny

Mar 30, 2010 | 2006 Toyota RAV4

1 Answer

All new brake shoes on 97 jeep front callibers still sticking


The problem lays with the Caliper itself and/or the brake hose connected to the Caliper.
However if you replaced the pads, did you also replace the Rotors or have them Turned? The old pads wear the rotor. New pads on old rotors that have not been replaced or turned may end with rubbing or stuck brakes.
A simple way to test whether it's one and/or the other:
1. Remove the Caliper from the rotor, remove the pads. Keep for now the caliper attached to the brake hose.
2. Very slowly push on the brake, exposing more of the piston out of the bore. Not all the way. Usually until the rubber dust seal/boot is fully extended.
3. Check the seal/boot for cracks and tears, and if clean or not. Bad seals may prevent the piston from re-seating.
4. Using a c-clamp and pushing straight in: Try repushing the Caliper Piston back into the Caliper Bore (the cup back into the hole). It should go back in realitively easy.
5. If it doesn't go back in easy: Again slowly pump the brake and re-push the pistons back out to full extended seal/boot (but not the piston out of the bore).
6. Detached the brake hose from the caliper.
7. Again using a c-clamp and pushing straight in: Try again to repush the caliper piston back into the bore without the hose attached. If it goes back-in relatively easy - the caliper is okay...it is the brake hose.
8. If the caliper piston does not go back in easily - Replace the caliper.
9. When Installing the new (reman) caliper, remember to bleed the brakes.
TRY EITHER OR #10 OR #11 BELOW:
After the new Caliper is reattached to hose and has been bled:
10. Again push on the brake petal to fully extend the caliper piston fully (rubber seal/boot fully extended) Again do not push the piston out of the bore! Try pushing the piston back into the bore. If it does not re-seat relatively easy: Replace the brake hose.
11. Another method: After replacing the new caliper back on the rotor: Assumng the entire front end (2WD front wheel drive) or entire vehicle (2WD rear wheel drive) or (4WD all the time) is jacked up off the ground
a. Put the lug nuts back on the rotor.
b. Have helper Start the vehicle and place in Drive. Don't step on gas!
c. Have then let off the brake and then engage the brake.
d. When they let off the brake watch to see if the Rotor is turning or not, if rubbing or not. Or if still sticking.
e. With a new caliper, turned or new rotors, and still a problem? It is the brake hose!
12. Replace the brake hose and try again.

Another method but more expensive:
OR Replace the calipers, brake hoses; bleed and test!

If this helped or not; or if you need additional help or have addtional questions let me know on fixya.com!

Nov 28, 2009 | 1997 Jeep Grand Cherokee

1 Answer

Replacing brake pads on audi A8L 2006


take calipers off take pads out use "c" clamp to push caliper piston back in caliper, check rotors for grooving if grooved re machine or replace put new pads on re bolt to the hub & should be good to go repeat process for the other three unless you have rear drums

Oct 23, 2009 | 2006 Audi A8

2 Answers

Changing rotors and breaks


When you replace the pads you have to retract the pistons into the bore. As the pads wear they stay extended from the brake caliper. The new thinkness of the pads will not allow the pads the slip over the rotors until you retract the pistons. Your pistons may be the type that have to be turned back into the bore.Good luck.

Mar 12, 2009 | 1998 Ford Expedition

1 Answer

Changing rear breaks


Try tapping around the rotor hat (the area that actually fits over the hub, where the lug bolt holes are) with a hammer. That usually will loosen up a rotor that's stuck due to heat, dust, etc. As for compressing the rear piston, they're a screw-in design, not a compression design like the front calipers. You need a piston retracting set (you can borrow them from AutoZone), and with that you can screw the pistons into the calipers. After removing the reservoir cap underhood, screw them all the way in so that you have ample clearance for the new pads over the new rotors, then pump the brakes a few times before you hit the road (put the reservoir cap back on first).

Oct 12, 2008 | 2001 Audi A8

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