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Thread: Master cylinder no fluid

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    Master cylinder no fluid

    Hey guys iv been trying to bleed my td42 but cannot get fluid to come out the master cylinder as we are bleeding it does this mean time for a new one?

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    Are you saying nothing comes out of the bleed nipple?
    Is it loose enough to get the bleeding brake oil out as you pump?
    What sort of bleeding method are you using? Vacuum pump or bleed bottle while pumping the brake pedal?
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    Quote Originally Posted by dom14 View Post
    Are you saying nothing comes out of the bleed nipple?
    Is it loose enough to get the bleeding brake oil out as you pump?
    What sort of bleeding method are you using? Vacuum pump or bleed bottle while pumping the brake pedal?
    Trying to bleed the line off the clutch master cylinder and cannot get fluid to pump out while some one pumps the clutch

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    Anyone pls help me

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    i know it is a silly question but is there fluid in the resivour. where are you trying to bleed it from, at the master cylinder or the slave cylinder. if the fluid becomes contaminated it can sometimes form a gunk plug at the hole where the fluid goes into the master cylinder, it might pay to clean out the resivour

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    Quote Originally Posted by nipagu7 View Post
    i know it is a silly question but is there fluid in the resivour. where are you trying to bleed it from, at the master cylinder or the slave cylinder. if the fluid becomes contaminated it can sometimes form a gunk plug at the hole where the fluid goes into the master cylinder, it might pay to clean out the resivour
    Yeah mate got fluid in the resivour it is very gunky im thinkin from a mix of dot 3 and 4 done it wat would i use to clean it with?

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    Patrol God mudnut's Avatar
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    Dot 3, dot 4 and 5.1 are made with the same base (glycol) and are compatible, but dot 5(silicon) is not.

    You can add a dot 4 to a dot 3 system, and dot 5.1 to a dot 4 system, but never the other way around.

    Is there any rust visible in the system at all?

    I have always used new brake fluid as a cleaner. You might want to buy a cheap syringe to suck the gunk out of the line.
    Last edited by mudnut; 3rd December 2017 at 04:25 PM.
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    yeah, as mudnut says, get a cheap syringe or a piece of clear tube 4mm diameter about 500mm long and suck it out, be careful not to injest it, is nasty stuff. i usually wipe the resivour clean with a lint free cloth before refilling. if the fluid still does not go thru, see if you can pressurise the resivour a little some how. if still no go the master cylinder might need a over haul.

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    Would i be able to use a air gun

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    Not advisable . If you don't have a moisture separator or trap after the compressor and if you have an in-line oiler, you will further contaminate the system. Take the bleed nipple out and check its not blocked.
    Last edited by mudnut; 5th December 2017 at 05:37 PM.
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