06 660 brake problem

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06 660 brake problem

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06 660 brake problem - 10/2/2008 8:59:02 PM

sscard

Posts: 1800
Joined: 1/30/2008
From: Cedar Hill, TX
Status: offline

friend replaced his brake pads on his 660 yesterday, called me to help him after it didnt work, i went over and found the whole caliper moving when you hit brake handle
this is the front right caliper
i had an extra that i just replaced with bad bolt holes, tapped em and installed it and now it wont get any pressure
any ideas
we have bled 3 full resoviors out and still no pressure

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Post #: 1

RE: 06 660 brake problem - 10/3/2008 2:01:27 PM

txjgrizz

Posts: 127
Joined: 7/28/2008
From: Southeast, Texas
Status: offline

This was the same problem I was having not too long ago. If its the front brake, all I do now is fill the resevoir, leave lid off, & open bleaders on the both calipers. Let it sit until fluid is steadily draining from the bleader & then tighten. DO NOT PUMP THE BRAKE. It took a few minutes for the gravity to pull it down & push the air. Re-fill fluid if necessary & install the resevoir cap & make sure the rubber seals. Pump the brake & you should have pressure. It took a few rides and pumping the brakes but will eventually work the air up to the resevoir. Typical bleeding practices didnt work. The rear caliper is worse so avoid breaking the lines.

If its not self draining then its another issue that I had as well & I will tell you what I did.

< Message edited by txjgrizz -- 10/3/2008 2:04:44 PM >

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Post #: 2

RE: 06 660 brake problem - 10/3/2008 3:37:50 PM

mud_dog450

Posts: 5518
Joined: 6/20/2004
From: Northeastern Indiana
Status: offline

Sometimes brake caliper pistons will get air pockets behind them where a conventional or any other type of bleeding just doesn't work.

Remove the master cylinder cover and diaphragm, pull the caliper off and remove the brake pads. With a pair of Channel-Locks push the piston to it's seat in the caliper, then pump the piston back out a ways, then repeat. The back and forth motion of the piston will help dislodge any air pockets that may have developed. After doing this about 15-20 times, install the pads, caliper, and reassemble the master cylinder. Then perform a simple pump, hold, bleed procedure to remove the air from the calipers.

If this does not work, you may need to remove the pistons, thoroughly clean the calipers, then try it all again.

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Post #: 3

RE: 06 660 brake problem - 10/4/2008 9:19:17 PM

Swamp Star

Posts: 286
Joined: 8/13/2008
From: Forsyth Georiga
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i have this problem in my rear breaks and have narrowed it down to the master cylinder but i just dont wanna go pay what yamaha wants for a new one and im gun shy of a used one

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Post #: 4

RE: 06 660 brake problem - 10/4/2008 10:05:37 PM

sscard

Posts: 1800
Joined: 1/30/2008
From: Cedar Hill, TX
Status: offline

txjgrizz wins the prize
that got it
thanks a milliion, they left for wolf pen gap last night and it was working when they left

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