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chrislabram

Joined:

Feb 10

Posts: 5

chrislabram says:

Sticking Front Brakes

I have a ZZR600 (1990) and even after changing the front brake pads, the brake still stick ON. They have been fitted with genuine pads and I did clean the cylinders and checked they were all free and went in and out. When the calipair is off the bike the pads are free and slide on the retaining pin.
 
Any suggetion?

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  • Posted 5 years ago (21 February 2010 11:22)

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jaffa90

Joined:

Mar 09

Posts: 8609

jaffa90 says:

brake

Welcome chris,from what you say it sounds like the piston in the reservoir tank is partly seized.:unsure:

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chrislabram

Joined:

Feb 10

Posts: 5

chrislabram says:

Brake problem

So simple if you think about it. So next weekend it a strip down of the "master cylinder".

Many thanks for the suggestion.

Regards

Chris

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magmann

Joined:

May 06

Posts: 115

magmann says:

/

Before you go striping apart your  master cylinder, possibly wasting time and money, reconsider carefully. The ZZR600 calipers are vulnerable to corrosion. The dust seals are likely to fill with green corrosive gunge and this will make the pistons stick. Even if they were seen to move in and out after cleaning, did you carefully check the state of the dust seals by eyeball and in a good light? If the pistons tend to pull the seals outwards with distortion when you pump  the pistons outwards, then you need a caliper strip/rebuild and new seals, both dust and oil. You should be able to check the movement of the master cylinder piston  by a visual check. I would say that if this was faulty, it would most likely be worn seals or piston bore, which would result in spongy braking, even with no air in the system.

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paulderekjohnson

Joined:

Feb 08

Posts: 1988

Such as....

......This

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Majoreyeswater

Joined:

Mar 09

Posts: 21

Dust seals

Good advice - i'd go with the dust seal too first - pull the buggers out and see if it helps.I had the same problem on my GTR with brakes binding for MOT.

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chrislabram

Joined:

Feb 10

Posts: 5

chrislabram says:

brakes

I fancy upgrading to yours? April's RIDE mag came out with yours better than the Yam FJR

Thanks for support :winkie:

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chrislabram

Joined:

Feb 10

Posts: 5

chrislabram says:

brakes

Will check all dust shields - already ordered master cylinder repair kit -  £35 inc postage. But I do live on the Isle of Wight. Ok spares cost but its good riding. 

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