front disc brake on 77 kawasaki kz400
front disc brake on 77 kawasaki kz400
my kz400 has a sticking disc, and i have removed the mastercylinder unit and i am trying to remove the the piston and i am unable due to a retainer ring that is rusted and difficult to remove, does anybody know how to more easily remove this ring, also if anybody has any input unto the cause of the caliber sticking please inform me, thank you
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kar_the_terrible
- Legendary
- Posts: 263
- Joined: Wed Mar 16, 2005 6:35 am
- Sex: Male
- Location: Pittsburgh, PA
I had a rear sticking disc that plagued me for a long time, suggestions offered and tried were. Mostly recommended in this order...
0) Check your master cylinder, gunk from old brake fluid can clog up a very small return hole in the m/c causing fluid pressure to build up in the caliper.
1) You may need a new caliper seal and rebuild kit. a bad or kinked seal can result in a stuck piston.
2) Brake line, could have collapsed inside and thus choked the return path of the fluid.
3) After checking all of the above, I finally realized that the aftermarket master cylinder rebuild kit was not the right one for my bike (even though it was advertised as so) and hence had to shell out $40 to a dealer for two pieces of rubber no larger than a penny and a spring
... yes very high tech stuff to blow away your money on.
In case you decide to replace any part, do a complete teardown and rebuild. Instead of shelling out to a dealer for a new m/c rebuild kit, i recommend purchasing a universal front master cylinder assembly for about $50, of course dont jump into that yet, teardowon your system in the above order and see if anything is amiss.
Be sure to use the proper tools, if those snap-rings/clips get bent, you will have a tough time putting everything back together.
0) Check your master cylinder, gunk from old brake fluid can clog up a very small return hole in the m/c causing fluid pressure to build up in the caliper.
1) You may need a new caliper seal and rebuild kit. a bad or kinked seal can result in a stuck piston.
2) Brake line, could have collapsed inside and thus choked the return path of the fluid.
3) After checking all of the above, I finally realized that the aftermarket master cylinder rebuild kit was not the right one for my bike (even though it was advertised as so) and hence had to shell out $40 to a dealer for two pieces of rubber no larger than a penny and a spring
... yes very high tech stuff to blow away your money on.In case you decide to replace any part, do a complete teardown and rebuild. Instead of shelling out to a dealer for a new m/c rebuild kit, i recommend purchasing a universal front master cylinder assembly for about $50, of course dont jump into that yet, teardowon your system in the above order and see if anything is amiss.
Be sure to use the proper tools, if those snap-rings/clips get bent, you will have a tough time putting everything back together.
'78 Yamaha XS400
'86 Yamaha Radian
'86 Yamaha Radian