Rear brake caliper - SV650.org

Viney · 21-08-06, 09:37 AM

Im getting it looked at but just wanted to see if anyone had this problem as well.

Changed seals in rear caliper at the weekend. Put it all back, bleed it and alls good when applying normal to light pressure on the rear pedal. Put heavy pressure, so imitating hard braking, the claiper locks to the disc.

All stuff like clean pistons, as in shiney, no scores/marks, clean unmarked bores, etc are all present and correct. Release bleed nipples and it doesnt release, so not hydraulic lock. Pistons move in and out freely and not sticking.

Very very fustraiting indeed.

21-08-06, 09:41 AM

Are the pistons retracting, but the pads sticking to the disc or are the pistons not retracting?

Have you cleaned the disc? Are the pad retaining pins clean and in good condition?

TSM · 21-08-06, 09:46 AM

Possably could be air in the line/caliper and because of this its not retracting the pistons then you let off the brake. Did you push the pistons back before you blead the brake?

Viney · 21-08-06, 09:51 AM

Quote:

Originally Posted by TSM

Possably could be air in the line/caliper and because of this its not retracting the pistons then you let off the brake. Did you push the pistons back before you blead the brake?

Yes. Done all the normal stuff. The pins, disc, pads etc are all clean and greased. The pisons as i said, flow back and forth as you press them in. They slide in an out freely. Just when you whack the rear brake on hard, it locks. Squid is going to have a look, just wanted to know if anyone else had experienced it and if so what was it

21-08-06, 07:03 PM

ive had something similar on my fronts,

traced it down to a small bit of air in the master cyclinder,

only did it under hard braking,

the heat was causing the little bit of air to expand, and only slowly releasing, as it cooled down.

Viney · 07-03-07, 01:15 PM

ooo, looking for something lese in saerch and found this. I never replied. It turned out to be the rear pads twisting in the caliper. Bought new pads and all is fine!

07-03-07, 10:47 PM

Did you put the pads in the way they came out?

I once cleaned mine and had a similar problem, swapped the pads around and it was fine

21-08-06, 09:37 AM	#1
Viney Member Mega Poster Join Date: Jul 2003 Location: In the shadows to the left Posts: 7,700	Rear brake caliper Im getting it looked at but just wanted to see if anyone had this problem as well. Changed seals in rear caliper at the weekend. Put it all back, bleed it and alls good when applying normal to light pressure on the rear pedal. Put heavy pressure, so imitating hard braking, the claiper locks to the disc. All stuff like clean pistons, as in shiney, no scores/marks, clean unmarked bores, etc are all present and correct. Release bleed nipples and it doesnt release, so not hydraulic lock. Pistons move in and out freely and not sticking. Very very fustraiting indeed.

21-08-06, 09:46 AM	#3
TSM The Sick Man Mega Poster Join Date: Nov 2004 Location: Peckham.SE.LDN Posts: 4,768	Possably could be air in the line/caliper and because of this its not retracting the pistons then you let off the brake. Did you push the pistons back before you blead the brake? __________________ OTR: KTM 690 Duke R 2015 Full Akro SIDELINE: Kwak ZX636 A1P 2002, Red, R&G's, Yoshi, Double Bubble Screen GONE: Kwak ZX-7R P1, Full Akro, Undertray, Screen GONE: SV650S K2 Very Bruised & Without Fairing, Motovation Frame Sliders, R&G Ally Sprocket Toe Protector, HEL 2 Line Setup, GSXR K1 600 RWU Forks, Barnett Clutch & Springs, Penske 8981 Shock, Gilles Ti Rearsets, Steel Barends, Scottoiler, AFAM Chain & Sprockets, Twin FIAMM Horns, Skidmarx Bellypan, Full Micron Zeta Steel System, Cut down undertay. Forum Problems & Information / Site Suggestions

07-03-07, 01:15 PM	#6
Viney Member Mega Poster Join Date: Jul 2003 Location: In the shadows to the left Posts: 7,700	Re: Rear brake caliper ooo, looking for something lese in saerch and found this. I never replied. It turned out to be the rear pads twisting in the caliper. Bought new pads and all is fine!

07-03-07, 10:47 PM	#7
svrash Guest Posts: n/a	Re: Rear brake caliper Did you put the pads in the way they came out? I once cleaned mine and had a similar problem, swapped the pads around and it was fine

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21-08-06, 09:41 AM	#2
Scoobs Guest Posts: n/a	Are the pistons retracting, but the pads sticking to the disc or are the pistons not retracting? Have you cleaned the disc? Are the pad retaining pins clean and in good condition?

21-08-06, 07:03 PM	#5
Warren Guest Posts: n/a	ive had something similar on my fronts, traced it down to a small bit of air in the master cyclinder, only did it under hard braking, the heat was causing the little bit of air to expand, and only slowly releasing, as it cooled down.