850 BRAKES BINDING

Apr 2nd, 2003, 20:42

Can anyone help, My 97 850 tdi's brakes have recently began squealing
I have now found that the brakes have begun to bind. On investigation I found that the f/n/s was binding heavily this would ease on its own after a few minutes. I couldn't see any obvious reason for them sticking. Has anyone any experience of this and how to free them off.

Apr 7th, 2003, 02:48

Remove the pins for the brake pads and inspect. Use sandpaper to smooth any rough spots and grease with silicone dielectric grease or one of the sicone grease products designed specifically for the slider pins. If pins are bad, then replace. Inspect pad thickness and replace pads if too worn. Worn pads require the caliper piston to fully extend. If you still have a problem, then replace the caliper. I replaced one on my old BMW 325 with a rebuilt part. Worked fine and never had another problem with it.

Apr 7th, 2003, 13:40

Thankyou for your sugestion ,however I have now found that the rubber piston boot has come away from the piston.

markas · Apr 8th, 2003, 18:53

Hi ya,

had this problem on both my passengerside calipers. I had binding especially on the rear and the front the caliper pistons had gone rusty with the pads rattling around in them. I in the end replaced all my calipers, pads and rear discs are they had become warped due to the rear binding.

Mark

Apr 2nd, 2003, 20:42	#1
bobebeck Guest Location:	850 BRAKES BINDING Can anyone help, My 97 850 tdi's brakes have recently began squealing I have now found that the brakes have begun to bind. On investigation I found that the f/n/s was binding heavily this would ease on its own after a few minutes. I couldn't see any obvious reason for them sticking. Has anyone any experience of this and how to free them off.

Apr 7th, 2003, 02:48	#2
kshaw Guest Location:	RE: 850 BRAKES BINDING Remove the pins for the brake pads and inspect. Use sandpaper to smooth any rough spots and grease with silicone dielectric grease or one of the sicone grease products designed specifically for the slider pins. If pins are bad, then replace. Inspect pad thickness and replace pads if too worn. Worn pads require the caliper piston to fully extend. If you still have a problem, then replace the caliper. I replaced one on my old BMW 325 with a rebuilt part. Worked fine and never had another problem with it.

Apr 7th, 2003, 13:40	#3
bobebeck Guest Location:	RE: 850 BRAKES BINDING Thankyou for your sugestion ,however I have now found that the rubber piston boot has come away from the piston.

Apr 8th, 2003, 18:53	#4
markas VOC Member Last Online: Mar 7th, 2024 14:11 Join Date: Dec 2002 Location: Stafford	RE: 850 BRAKES BINDING Hi ya, had this problem on both my passengerside calipers. I had binding especially on the rear and the front the caliper pistons had gone rusty with the pads rattling around in them. I in the end replaced all my calipers, pads and rear discs are they had become warped due to the rear binding. Mark __________________ Polishing Mark VOC 850 class winner 1998 to 2007 Rejoined 2022

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