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Tool Talk Discussion Forum

O/T Automotive front disk brakes

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frankiee

09-20-2007 11:53:22




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Are front disk brakes pads to just touch the rotors when not in use?
I just never thought of it much before.
My 99 Intrepid squeals sometimes going around corners (not the tires) and I am having a hard time finding it.
When I checked the wheels I spun them when front was jacked up and they were not sticking but I could hear the pads rubbing the rotor a bit on both sides. I can spin the wheels and get a few revolutions out of them.
Are the calipers to pull them right back away from the rotor??
Thanks

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rick in sc

09-22-2007 05:33:25




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
Are the pads worn way down? IF the pads are worn down AND IF the pads have wear indicators, (little metal tabs that touch the rotor when the pads are worn out), turning forces can cause the rotor to flex just enough to touch the tabs and cause a noise; typically a chirp/squeek. Rick



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Vern-MI

09-21-2007 12:14:59




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
See if the power steering pump is full of oil and also see if the belt is loose, dried out or worn out. Combination of worn dried out belt and weak spring in the automatic tensioner will cause the belt to squeal on the pulley when you put a demand on the pump by turning the front wheels.



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fzbcheve

09-20-2007 18:47:27




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
Had the same problem with a 1998 Pontac Grand Prix. Put on new tires, and the noise quit.
Can't figure out what was going on.



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Old Ford Mechanic

09-20-2007 18:44:16




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
Frankee,Some of the cars in the past several years have gone to ceramic material lining on the pads.If your vehicle had these on it originally then,they should be replaced with the ceramic pads.Most of the aftermarket brands have these pads but they are pricier than the other composit pads.They displace heat better than some of the other types and are quieter also.However most Brake Shops use the cheaper pads unless you request the better ones.Also if you are familar with the caliper system on your car you might clean up and lubricate the pins and slides and help the noise.Autozone and Advance Auto Parts are not the best place to purchase replacement pads for a vehicle.They buy the cheapest quality replacement parts they can.Thats why they can sell them so cheap and offer a lifetime warranty.They have almost nothing in them to start with.Brakes to me are the most important feature on my vehicles.So i have no problem paying a premium price for parts and service on them.I would advise anyone to do the same.After all its yours and your family's saftey at stake.

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jdemaris

09-20-2007 17:41:56




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
Automoive disk brakes come in two versions - "standard" and "low drag." Most cars have low drag and most trucks have standard. Usually, a cast-iron master-cylinder indicates "standard" brakes, and a soft-metal master cylinder with a plastic reservoir indicates a "low drag" system.



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Jiles

09-20-2007 16:03:12




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
Disc brakes are designed to be pulled back slightly by the rubber seal accompanied by the very slight sideway movement of the rotor.



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RobMD

09-20-2007 14:55:21




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
how thick are your pads? anythign under 3/16th of an inch should be replaced



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timcasbolt

09-20-2007 14:16:01




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
disc brake pads always rub. there is nothing in the caliper to retract the piston(s).



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CENTAUR

09-20-2007 12:37:32




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 Re: O/T Automotive front disk brakes in reply to frankiee, 09-20-2007 11:53:22  
I think you will find that the noise is being produced by the small metal warning tabs that are there to let you know it may be time to replace the pads.To check this bend the tabs away from the rotors if they are close and road test. CENTAUR



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