Brake Pads "cheen-cheen" Screeching Sound While Braking

rajivanoj · 9th August 2009, 22:29

TNG pads cost about Rs.750 , i couldnt remember the exact price but +/- 50. But as others said Rane, TVS girling are better ones, me too have asked for Rane or TVS, but in the spares shop, where i bought, they had only Sumitomo OE and TNG brand.

ghpk · 10th August 2009, 01:16

Ooops, I found one wheel on my santro is giving braking creeps.
Done 35k KM in 3+ yrs.

Can someone please suggest good brake pads.

rajivanoj · 10th August 2009, 08:40

Go for OE, if not available or cost matters, then go for Rane , TVS girling (but TVS has two qualities, go for better one which might be costlier than other)

Dont go for cheap imported unbranded or unknown ones.

sgiitk · 10th August 2009, 10:14

Quote:

Originally Posted by wolfinstein

No question of glazing ..! All pads OEM or Aftermarket are roughend with Sandpaper before being installed..! + Even if they are not a few spins will rough them

I know this abominable practice is unfortunately quite common The pad (or shoe) surfaces should never be sanded with sand or emery paper. You risk picking up the grit on the lining and then damaging the system for a long time.

If the replacement pads were metallic (longer life) then the squeal is more likely. Also, the discs should have been honed/faced before replacing the pads. Was this done?

gpa · 10th August 2009, 11:52

Quote:

Originally Posted by sgiitk

I know this abominable practice is unfortunately quite common The pad (or shoe) surfaces should never be sanded with sand or emery paper. You risk picking up the grit on the lining and then damaging the system for a long time.

sgiitk,

Sanding down or cleaning the pad surfaces with emry paper is common in most MASS. However, I have seen that the mechanics blow a shot of highly compressed air for a minute or so over the pads before they are put back into the calipers. Does this clear the pads of any grit?

If this process is not advisable, then what is the best way to get the pads and shoes cleaned? Am nearing the 20k kms service on my Alto and will be needing a thorough cleaning of the front pads.

Will be keen to have your inputs.

Thanks in advance,
gpa

serpente · 10th August 2009, 17:14

One reason for the screeching sound could also be water. It usually happens in rainy days when you drive your car a few hours after a drive on wet roads. The metal of the pads gets rusted because of the water. There might be water getting into the pads when the car is washed.

shantnusharma · 24th October 2009, 13:27

Hi,

I have got new break pads for my optra (not from GM A.S.S) and since then it is giving me that screeching sound, showed it to the mechanic and he replaced the pads, stating that they were faulty but the other set is also giving me similar problem ....initially for couple of hundred KM there were ok but then again now I get that sound..specially at high speed braking.
Can someone help please..
Regards
Shantnu

bruno.1989 · 25th October 2009, 19:51

i hav experienced this sound in my bike. bajaj pulsar 150. i dismantled the brake pad.. and i noticed metal filling on the brake pad. and so i removed it using emery sheet. and after few months i noticed the problem again.. can anyone help me out????

shantnusharma · 26th October 2009, 13:25

What brakepads are recommended for Optra 1.6, apart from OEM?

novice · 26th October 2009, 14:10

Quote:

Originally Posted by shantnusharma

Hi,

I have got new break pads for my optra (not from GM A.S.S) and since then it is giving me that screeching sound, showed it to the mechanic and he replaced the pads, stating that they were faulty but the other set is also giving me similar problem ....initially for couple of hundred KM there were ok but then again now I get that sound..specially at high speed braking.
Can someone help please..
Regards
Shantnu

In 90% of the cases the squealing noise after change of pads is caused due to lack of greasing. When pads are changed always remember to apply grease to pad outer surfaces and other moving parts of the brake system i.e caliper etc.,

shantnusharma · 2nd November 2009, 18:57

kool, so will take my car to the mechanic this weekend and will ask him to apply grease on caliper... and will let you know if the problem is resolved..
Thanks !

novice · 3rd November 2009, 13:17

Quote:

Originally Posted by shantnusharma

kool, so will take my car to the mechanic this weekend and will ask him to apply grease on caliper... and will let you know if the problem is resolved..
Thanks !

also to the pad outer surface...

sgiitk · 3rd November 2009, 14:26

Quote:

Originally Posted by gpa

sgiitk,

Sanding down or cleaning the pad surfaces with emry paper is common in most MASS. However, I have seen that the mechanics blow a shot of highly compressed air for a minute or so over the pads before they are put back into the calipers. Does this clear the pads of any grit?

using Sandpaper and/or Emery is a BIG NO-NO, but is a widespread practice. if they must then let them use a file. This was there will be no embedded grit. I have forced the jokers to skip the emery/sandpaper bit.

MileCruncher · 3rd November 2009, 17:26

I'm not sure I have read/heard any auto company recommending applying grease of the brake pads either on disk contact surface or otherwise. One should apply grease only on the caliper pin and that is it.

Screeching sound on a new pad is generally there as the outer pad surface is slightly harder material compared to the rest and till the time the pad sets on the disk. In your case shantnu, I feel that the pad material is not right. The best Brake Pads in India are generally made by TVS Girling so I suggest you use them, unless you get GM authorised spares from the stockist/A.S.S directly.

SPARKled · 3rd November 2009, 17:34

Had this problem in my new Spark. The dealership guys opened up the calipers and did brake bleeding and rubbing with sand paper. This did not help. The other dealership applied grease, not sure where, but the problem is now solved.

9th August 2009, 22:29	#46
rajivanoj BANNED Join Date: Mar 2007 Location: Coimbatore Posts: 398 Thanked: 52 Times View My Garage	TNG pads cost about Rs.750 , i couldnt remember the exact price but +/- 50. But as others said Rane, TVS girling are better ones, me too have asked for Rane or TVS, but in the spares shop, where i bought, they had only Sumitomo OE and TNG brand.
	() Thanks

10th August 2009, 01:16	#47
ghpk BHPian Join Date: Mar 2009 Location: Ghaziabad Posts: 870 Thanked: 211 Times	Ooops, I found one wheel on my santro is giving braking creeps. Done 35k KM in 3+ yrs. Can someone please suggest good brake pads.
	() Thanks

10th August 2009, 08:40	#48
rajivanoj BANNED Join Date: Mar 2007 Location: Coimbatore Posts: 398 Thanked: 52 Times View My Garage	Go for OE, if not available or cost matters, then go for Rane , TVS girling (but TVS has two qualities, go for better one which might be costlier than other) Dont go for cheap imported unbranded or unknown ones.
	() Thanks

10th August 2009, 17:14	#51
serpente BHPian Join Date: Nov 2008 Location: mumbai Posts: 83 Thanked: 0 Times	One reason for the screeching sound could also be water. It usually happens in rainy days when you drive your car a few hours after a drive on wet roads. The metal of the pads gets rusted because of the water. There might be water getting into the pads when the car is washed.
	() Thanks

24th October 2009, 13:27	#52
shantnusharma Newbie Join Date: Oct 2009 Location: Jaipur Posts: 14 Thanked: 0 Times	Optra Break Pad Issue Hi, I have got new break pads for my optra (not from GM A.S.S) and since then it is giving me that screeching sound, showed it to the mechanic and he replaced the pads, stating that they were faulty but the other set is also giving me similar problem ....initially for couple of hundred KM there were ok but then again now I get that sound..specially at high speed braking. Can someone help please.. Regards Shantnu
	() Thanks

25th October 2009, 19:51	#53
bruno.1989 Newbie Join Date: Nov 2008 Location: Chennai Posts: 4 Thanked: 0 Times	Screeching sound.... i hav experienced this sound in my bike. bajaj pulsar 150. i dismantled the brake pad.. and i noticed metal filling on the brake pad. and so i removed it using emery sheet. and after few months i noticed the problem again.. can anyone help me out????
	() Thanks

26th October 2009, 13:25	#54
shantnusharma Newbie Join Date: Oct 2009 Location: Jaipur Posts: 14 Thanked: 0 Times	What brakepads are recommended for Optra 1.6, apart from OEM?
	() Thanks

2nd November 2009, 18:57	#56
shantnusharma Newbie Join Date: Oct 2009 Location: Jaipur Posts: 14 Thanked: 0 Times	kool, so will take my car to the mechanic this weekend and will ask him to apply grease on caliper... and will let you know if the problem is resolved.. Thanks !
	() Thanks

3rd November 2009, 17:26	#59
MileCruncher Senior - BHPian Join Date: Jan 2009 Location: MH01 Posts: 4,235 Thanked: 592 Times View My Garage	I'm not sure I have read/heard any auto company recommending applying grease of the brake pads either on disk contact surface or otherwise. One should apply grease only on the caliper pin and that is it. Screeching sound on a new pad is generally there as the outer pad surface is slightly harder material compared to the rest and till the time the pad sets on the disk. In your case shantnu, I feel that the pad material is not right. The best Brake Pads in India are generally made by TVS Girling so I suggest you use them, unless you get GM authorised spares from the stockist/A.S.S directly.
	() Thanks

3rd November 2009, 17:34	#60
SPARKled Senior - BHPian Join Date: Aug 2009 Location: Navi Mumbai Posts: 1,110 Thanked: 656 Times	Had this problem in my new Spark. The dealership guys opened up the calipers and did brake bleeding and rubbing with sand paper. This did not help. The other dealership applied grease, not sure where, but the problem is now solved.
	() Thanks