master cylinders whats the diffrence?? - Wrist Twisters
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post #1 of 3 Old 07-08-2012, 09:55 AM Thread Starter
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Question master cylinders whats the diffrence??

Do any of you people know if there is a diffrence between a front brake res/master cylinder and a clutch one.... the reason is i have noticed that the clutch level window is facing forwards instead if back towards the rider like the front brake one so im thinking this isnt a clutch res/master cylinder. ps its a bandit 1200 1997.

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post #2 of 3 Old 07-08-2012, 10:59 AM
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In order to place the reservoir at the top it is necessary to make the clutch master cylinder a mirror of the brake master cylinder. That the reservoir sight glass is not visible while riding is a bit unusual, but since there should not be any fluid loss to displacement into the slave cylinder (the analog of the brake caliper pistons) it is not all that necessary to check the fluid level very often. Once a month or so should be fine, and is more a case of checking the condition / color of the fluid rather than the level.

Why? While the brake master cylinder piston normally moves very little, the clutch master goes through it's full stroke every time -- this movement works the fluid considerably more which will tend to break down the lubricating properties faster than the brake side of things. In consequence of this flushing the clutch hydraulic system fluid should be done once a year at least, and depending on annual mileage as frequently as every 6 months.


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post #3 of 3 Old 07-08-2012, 01:03 PM Thread Starter
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the clutch slave i think its called it the bit thats on the clutch pedal side started letting air into the system so i replaced the seal and flushed the system then refilled it as the dot4 had also gone dark with a fine grain like substance init . seems to be working although i not conviced it sorted out, you could hear the bubbles of air sqeezing out when you pulled the lever.... gear change was clunky more than normal thats when i noticed the res , wasnt sure if it had to be a diffrent one if the system worked in a diffrent way ect......

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