Real Annoying Deore Hydro Problem

Rampager · 09-12-2004, 07:30 PM

My rear Deore hyrdo (m-525 or something) has been giving me troubles latley. Whenever i go into a manual and tap my brake, or tap my rear brake anytime for that matter, the brake stays 1/2 on and makes a horribile squealing noise. It doesnt do this everytime, maybe once or twice an hour. Ive played around with the caliper alignment and everything, but no matter how i set it up, it still does it. Im rather savy when it comes to bikes, and i know how to do most things, but i cant fix this because i dont know whats causing it. Does anyone have an idea whats going on?

XXX_er · 09-12-2004, 08:09 PM

when it does it stop imediatley without using the rear brake

check and see whats hanging,are the pads not retracting, is the piston staying in,is the master cylinder hanging up?Then narrow it down further from there

at least you can duplicate the prob on a regualr basis

IFO · 09-12-2004, 11:59 PM

sounds like u may have a partly ceazed piston in your caliper...

either that or a pad thats not returning with the piston s its supposed to...

check the spring clip and remove the pads and watch the piston's motion out of/into the caliper bores...

watch to see if it seems sticky or sluggish...

Zedbra · 09-13-2004, 02:21 PM

I was going to say what IFO just did - sounds like a partly buggered piston - its a cheap fix.

drunken_duncan · 09-13-2004, 07:57 PM

haha, jarred, my old shimano (mechanical too) used to do that, take the pin out that holds the pads in and use some sand paper on it, the little pin gets a build up of crap on it and catches the spring/pad and doesn't like letting it go all the way back.

Rampager · 09-14-2004, 06:05 AM

Ben you dork, mines a hyrdo. Hows the new bike? Come up here and ride darnit.

drunken_duncan · 09-15-2004, 01:08 AM

im pretty sure the hydro has the pin to, maybe im just remembering this incorrectly.

XXX_er · 09-15-2004, 01:27 AM

Never worked on or used shimanos but I thot i read that all shimanos use the same pads?

Rampager · 09-15-2004, 02:07 AM

Im not too sure. Can anyone confirm this? All i know is that they are and go in different than hayes.

the flying moose · 09-15-2004, 02:13 AM

Quote:

Originally posted by XXX_er
Never worked on or used shimanos but I thot i read that all shimanos use the same pads?

im not sure about that. looking at this i see several different shimano pads.

http://www.bikeroom.com/items.asp?Cc=1100

IFO · 09-15-2004, 03:13 AM

Shimano uses several different designs and in fact also offers several different pad compound choices for each brake design...

Deore pads are NOT the same as XT pads...

sanrensho · 09-15-2004, 03:53 AM

Deore BR-M525 (hydro) and BR-M515 (mech) only come in resin/resin pads.

All other Shimano hydros are available in metal/metal, metal/resin, and resin/resin pad choices.

The above only applies to Shimano pads, not aftermarket pads.

LadysmithRyders · 09-15-2004, 04:38 AM

Did you get it working yet jarrad? I thought you were out working on it earlier, give me an update, i wanna hear which bike you are bringing into town tomorrow, if u get it fixed bring both eh??

Rampager · 09-15-2004, 05:25 AM

So. Any deore pads will fit any deore brakes? Will the clip thingy that goes between the pads come with them? Will the clip that holds it all together?

Cory, i took the pads out cause they were shot so theres no pads in there. Im gonna bring the atomik tomorrow, and thursday when im in Nanaimo, the bikes getting brought to the shop casue i think the problem wasnt with the pads and i cant figure it out.

.Robinson · 09-15-2004, 06:06 AM

Quote:

Originally posted by Rampager
My rear Deore hyrdo (m-525 or something) has been giving me troubles latley. Whenever i go into a manual and tap my brake, or tap my rear brake anytime for that matter, the brake stays 1/2 on and makes a horribile squealing noise. It doesnt do this everytime, maybe once or twice an hour. Ive played around with the caliper alignment and everything, but no matter how i set it up, it still does it. Im rather savy when it comes to bikes, and i know how to do most things, but i cant fix this because i dont know whats causing it. Does anyone have an idea whats going on?

is it fairly load and not really hi pitch?

09-12-2004, 07:30 PM	#1
Rampager Whistler Join Date: Jul 2003 Location: Ladysmith Posts: 3,017 Rep Power: 83410	Real Annoying Deore Hydro Problem My rear Deore hyrdo (m-525 or something) has been giving me troubles latley. Whenever i go into a manual and tap my brake, or tap my rear brake anytime for that matter, the brake stays 1/2 on and makes a horribile squealing noise. It doesnt do this everytime, maybe once or twice an hour. Ive played around with the caliper alignment and everything, but no matter how i set it up, it still does it. Im rather savy when it comes to bikes, and i know how to do most things, but i cant fix this because i dont know whats causing it. Does anyone have an idea whats going on?

09-13-2004, 02:21 PM	#4
Zedbra Beer Shop Steward Join Date: Mar 2003 Location: Squish Posts: 12,592 Rep Power: 21474849	I was going to say what IFO just did - sounds like a partly buggered piston - its a cheap fix. __________________ Squampton B Team

09-15-2004, 03:53 AM	#12
sanrensho Registered User Join Date: Jun 2003 Location: NV Posts: 7,137 Rep Power: 592698	Deore BR-M525 (hydro) and BR-M515 (mech) only come in resin/resin pads. All other Shimano hydros are available in metal/metal, metal/resin, and resin/resin pad choices. The above only applies to Shimano pads, not aftermarket pads. __________________ "The song of a bird...We used to ask Ennesson to do bird calls. He could do them. How he could do them, and when he perished, along with him went all those birds..."-Return from the Stars, Stanislaw Lem "We just walk around, and sometimes we go out and dance, and then we listen to the environment."-Ralf Hutter, Kraftwerk

09-15-2004, 04:38 AM	#13
LadysmithRyders www.ladysmithryders.com Join Date: Sep 2004 Location: Ladysmith, Van Isle Posts: 134 Rep Power: 9	Did you get it working yet jarrad? I thought you were out working on it earlier, give me an update, i wanna hear which bike you are bringing into town tomorrow, if u get it fixed bring both eh?? __________________ www.ladysmithryders.com

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09-12-2004, 08:09 PM	#2
XXX_er Registered User Join Date: Nov 2002 Location: central B.C. Posts: 10,967 Rep Power: 6350181	when it does it stop imediatley without using the rear brake check and see whats hanging,are the pads not retracting, is the piston staying in,is the master cylinder hanging up?Then narrow it down further from there at least you can duplicate the prob on a regualr basis

09-12-2004, 11:59 PM	#3
IFO Cove STD goodness...Yummy Join Date: Nov 2002 Posts: 13,651 Rep Power: 4442274	sounds like u may have a partly ceazed piston in your caliper... either that or a pad thats not returning with the piston s its supposed to... check the spring clip and remove the pads and watch the piston's motion out of/into the caliper bores... watch to see if it seems sticky or sluggish...

09-13-2004, 07:57 PM	#5
drunken_duncan Troller of shit threads Join Date: Aug 2003 Location: Drunken duncan , B.C. Posts: 1,742 Rep Power: 0	haha, jarred, my old shimano (mechanical too) used to do that, take the pin out that holds the pads in and use some sand paper on it, the little pin gets a build up of crap on it and catches the spring/pad and doesn't like letting it go all the way back.

09-14-2004, 06:05 AM	#6
Rampager Whistler Join Date: Jul 2003 Location: Ladysmith Posts: 3,017 Rep Power: 83410	Ben you dork, mines a hyrdo. Hows the new bike? Come up here and ride darnit.

09-15-2004, 01:08 AM	#7
drunken_duncan Troller of shit threads Join Date: Aug 2003 Location: Drunken duncan , B.C. Posts: 1,742 Rep Power: 0	im pretty sure the hydro has the pin to, maybe im just remembering this incorrectly.

09-15-2004, 01:27 AM	#8
XXX_er Registered User Join Date: Nov 2002 Location: central B.C. Posts: 10,967 Rep Power: 6350181	Never worked on or used shimanos but I thot i read that all shimanos use the same pads?

09-15-2004, 02:07 AM	#9
Rampager Whistler Join Date: Jul 2003 Location: Ladysmith Posts: 3,017 Rep Power: 83410	Im not too sure. Can anyone confirm this? All i know is that they are and go in different than hayes.

09-15-2004, 03:13 AM	#11
IFO Cove STD goodness...Yummy Join Date: Nov 2002 Posts: 13,651 Rep Power: 4442274	Shimano uses several different designs and in fact also offers several different pad compound choices for each brake design... Deore pads are NOT the same as XT pads...

09-15-2004, 05:25 AM	#14
Rampager Whistler Join Date: Jul 2003 Location: Ladysmith Posts: 3,017 Rep Power: 83410	So. Any deore pads will fit any deore brakes? Will the clip thingy that goes between the pads come with them? Will the clip that holds it all together? Cory, i took the pads out cause they were shot so theres no pads in there. Im gonna bring the atomik tomorrow, and thursday when im in Nanaimo, the bikes getting brought to the shop casue i think the problem wasnt with the pads and i cant figure it out.