Front brake issues
Brandish
10-22-2009, 09:29 PM
Hey all,
I just had the brakes done on my '00 SE about a year and a half ago, and now I'm having the same problems I initially had when they were done then. I had pads replaced on the front, shoes on the rear. Not too long afterwards I started experiencing a creaking noise coming from one of the calipers. I did a search on this in the forum, and found that the caliper pins are notorious for causing this noise. Is there a way to fix this? The last time this happened, I had the entire caliper replaced, as shortly after the creaking started, I was hearing a grinding noise when the brakes were applied. Mechanic told me the caliper was siezed, caused premature wear on the pads and gouged the rotors to shyte. Now I'm getting the grinding noise on the drivers side, and the creaking noise on the passenger side. Do I need to replace everything again? Thanks for any help!
I just had the brakes done on my '00 SE about a year and a half ago, and now I'm having the same problems I initially had when they were done then. I had pads replaced on the front, shoes on the rear. Not too long afterwards I started experiencing a creaking noise coming from one of the calipers. I did a search on this in the forum, and found that the caliper pins are notorious for causing this noise. Is there a way to fix this? The last time this happened, I had the entire caliper replaced, as shortly after the creaking started, I was hearing a grinding noise when the brakes were applied. Mechanic told me the caliper was siezed, caused premature wear on the pads and gouged the rotors to shyte. Now I'm getting the grinding noise on the drivers side, and the creaking noise on the passenger side. Do I need to replace everything again? Thanks for any help!
INDY86
10-23-2009, 03:31 PM
Sounds like the pins were reinstalled without being cleaned and lubed. At this point I would replace the pins with new or clean up old ones and true up the rotors. If pads dont look chewed up you should be able to reuse them.
The_Mechanic_33
10-23-2009, 05:09 PM
Do not reuse brake pads.
The friction material in semi-metallic pads is held together by an organic binder, usually a type of phenolic material. As the pads get hot, the binder boils, and burns, from the top surface of the pad.Some pads, like the Performance Friction pads, deposit a layer of carbon in the surface of the rotor. They need that layer of carbon to perform at peak efficiency.Burnishing Pads and Rotors
provided by 2002 Helms GM Service Manual page 5-70.Caution: Road test a vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.
Burnishing the brake pads and brake rotors is necessary in order to ensure that the braking surfaces are properly prepared after service has been performed on the disc brake system.
This procedure should be performed whenever the disc brake rotors have been refinished or replaced, and/or whenever the disc brake pads have been replaced.
1. Select a smooth road with little or no traffic.
2. Accelerate the vehicle to 48 km/h (30 mph).
Important: Use care to avoid overheating the brakes while performing this step.
3. Using moderate to firm pressure, apply the brakes to bring the vehicle to a stop. Do not allow the brakes to lock.
4. Repeat steps 2 and 3 until approximately 20 stops have been completed. Allow sufficient cooling periods between stops in order to properly burnish the brake pads and rotors.
As for the caliper slide pins remove the rubber and hone(smaller size like a 17mm. flex hone) the bore a little to remove rust and expand the i.d of the bore back to spec. then install rubber hardware and lube inside and pins. should slide with little force.
http://t2.gstatic.com/images?q=tbn:RtRmoisfNA4-ZM:http://www.globalautoparts.biz/images/tool_images/flexhoneanchor.jpg
The friction material in semi-metallic pads is held together by an organic binder, usually a type of phenolic material. As the pads get hot, the binder boils, and burns, from the top surface of the pad.Some pads, like the Performance Friction pads, deposit a layer of carbon in the surface of the rotor. They need that layer of carbon to perform at peak efficiency.Burnishing Pads and Rotors
provided by 2002 Helms GM Service Manual page 5-70.Caution: Road test a vehicle under safe conditions and while obeying all traffic laws. Do not attempt any maneuvers that could jeopardize vehicle control. Failure to adhere to these precautions could lead to serious personal injury and vehicle damage.
Burnishing the brake pads and brake rotors is necessary in order to ensure that the braking surfaces are properly prepared after service has been performed on the disc brake system.
This procedure should be performed whenever the disc brake rotors have been refinished or replaced, and/or whenever the disc brake pads have been replaced.
1. Select a smooth road with little or no traffic.
2. Accelerate the vehicle to 48 km/h (30 mph).
Important: Use care to avoid overheating the brakes while performing this step.
3. Using moderate to firm pressure, apply the brakes to bring the vehicle to a stop. Do not allow the brakes to lock.
4. Repeat steps 2 and 3 until approximately 20 stops have been completed. Allow sufficient cooling periods between stops in order to properly burnish the brake pads and rotors.
As for the caliper slide pins remove the rubber and hone(smaller size like a 17mm. flex hone) the bore a little to remove rust and expand the i.d of the bore back to spec. then install rubber hardware and lube inside and pins. should slide with little force.
http://t2.gstatic.com/images?q=tbn:RtRmoisfNA4-ZM:http://www.globalautoparts.biz/images/tool_images/flexhoneanchor.jpg
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