Front Brake replacement problem

Canuck · 08-06-2009, 03:54 PM

Hey guys,

Ran into a problem after i installed the front brake pads.

They are in contact with the disc without having pressure on the handle.

do i need to air bleed the brakeline now?
or.. use a "C" Clamp to push the pressure back on the master cylinder(if that is the correct term)?

or... is there always supposed to be a hair of contact between the pads and the disc...??

Canuck · 08-06-2009, 03:55 PM

CORRECTION...
Brake Piston**

Canuck · 08-06-2009, 04:27 PM

Either way... i have begun to bleed the brake system and... of course somehow screwed up..

now i have constant "sponginess" and my brakes have no power.

Great.

So... umm I dont know where i went wrong here but i guess ill read the manual on bleeding the system OVER ..and OVER in hopes of getting it right.

(I really need to just leave things alone.. ) *sigh*

Sarris · 08-06-2009, 04:55 PM

Brother;

Disc brake pads are always in contact with the rotor and the caliper piston. That's the way they are supposed to be.

To address the sponginess, re-bleed the brakes using someone else to pump the lever for you.

The procedure is, pump the lever 5 times and hold. Open the bleeder on the caliper, releasing fluid and air. Close the bleeder and release the lever.

Repeat until the lever feels firm again. (4 or 5 times is usually sufficient) Be sure you keep the fluid reservoir full.

Good luck.

Canuck · 08-06-2009, 05:10 PM

Sarris its working now... i had to be more patient with letting the airbubbles come out fully.

then i could feel the tension..

As long as you say so Sarris.. I just thought that there would be a hair between the pad and the disc but its not enough to really feel any resistance so I'll let it slide..

Thanks for the input

by the way .. i dont think i kept the reservoir full 100 percent of the time..

bonehead · 08-07-2009, 07:25 AM

Just remember to wash off any brake fluid that gets on paint or chrome, it will eat it away in no time.

Canuck · 08-07-2009, 11:05 AM

Funny you said that bonehead...

Put the master cylinder cap on my seat... left marks...

I guess fate is directing me towards a custom seat :lol:

bonehead · 08-07-2009, 11:18 AM

Ya, sorry I did,nt read the post sooner. Brake fluid will really screw paint and such up.

TO-GZ · 08-09-2009, 02:58 PM

If you don't have a second person handy to hold the brake lever while you bleed the line, try using an elastic band or zip tie to hold the lever in.

08-06-2009, 03:54 PM	#1
Canuck Senior Member Join Date: Aug 2008 Location: Vancouver Island Posts: 159	Front Brake replacement problem Hey guys, Ran into a problem after i installed the front brake pads. They are in contact with the disc without having pressure on the handle. do i need to air bleed the brakeline now? or.. use a "C" Clamp to push the pressure back on the master cylinder(if that is the correct term)? or... is there always supposed to be a hair of contact between the pads and the disc...?? Login or Register to Remove Ads
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08-06-2009, 03:55 PM	#2
Canuck Senior Member Join Date: Aug 2008 Location: Vancouver Island Posts: 159	Re: Front Brake replacement problem CORRECTION... Brake Piston**
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08-06-2009, 04:27 PM	#3
Canuck Senior Member Join Date: Aug 2008 Location: Vancouver Island Posts: 159	Re: Front Brake replacement problem Either way... i have begun to bleed the brake system and... of course somehow screwed up.. now i have constant "sponginess" and my brakes have no power. Great. So... umm I dont know where i went wrong here but i guess ill read the manual on bleeding the system OVER ..and OVER in hopes of getting it right. (I really need to just leave things alone.. ) sigh Login or Register to Remove Ads
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08-06-2009, 04:55 PM	#4
Sarris Senior Member Join Date: May 2007 Location: New Port Richey, Florida USA Posts: 1,348	Re: Front Brake replacement problem Brother; Disc brake pads are always in contact with the rotor and the caliper piston. That's the way they are supposed to be. To address the sponginess, re-bleed the brakes using someone else to pump the lever for you. The procedure is, pump the lever 5 times and hold. Open the bleeder on the caliper, releasing fluid and air. Close the bleeder and release the lever. Repeat until the lever feels firm again. (4 or 5 times is usually sufficient) Be sure you keep the fluid reservoir full. Good luck. __________________ Prudent riders live longer than moron riders.
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08-06-2009, 05:10 PM	#5
Canuck Senior Member Join Date: Aug 2008 Location: Vancouver Island Posts: 159	Re: Front Brake replacement problem Sarris its working now... i had to be more patient with letting the airbubbles come out fully. then i could feel the tension.. As long as you say so Sarris.. I just thought that there would be a hair between the pad and the disc but its not enough to really feel any resistance so I'll let it slide.. Thanks for the input by the way .. i dont think i kept the reservoir full 100 percent of the time.. Login or Register to Remove Ads
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08-07-2009, 07:25 AM	#6
bonehead Senior Member Join Date: May 2009 Location: elgin,tx Posts: 907	Re: Front Brake replacement problem Just remember to wash off any brake fluid that gets on paint or chrome, it will eat it away in no time. __________________ Standing with the PGR until they stand for me.
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08-07-2009, 11:05 AM	#7
Canuck Senior Member Join Date: Aug 2008 Location: Vancouver Island Posts: 159	Re: Front Brake replacement problem Funny you said that bonehead... Put the master cylinder cap on my seat... left marks... I guess fate is directing me towards a custom seat :lol:
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08-07-2009, 11:18 AM	#8
bonehead Senior Member Join Date: May 2009 Location: elgin,tx Posts: 907	Re: Front Brake replacement problem Ya, sorry I did,nt read the post sooner. Brake fluid will really screw paint and such up. __________________ Standing with the PGR until they stand for me.
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08-09-2009, 02:58 PM	#9
TO-GZ Junior Member Join Date: Jul 2009 Location: Toronto Posts: 1	Re: Front Brake replacement problem If you don't have a second person handy to hold the brake lever while you bleed the line, try using an elastic band or zip tie to hold the lever in.
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