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Master cylinder question

Discussion in 'XJ Technical Chat' started by Jzap99, Mar 29, 2008.

  1. Jzap99

    Jzap99 Member

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    I pulled my master cylinder off to paint and noticed the rubber sleeve thing that surrounds the rod the brake lever pushes in has a rip in it, does it need to be replaced?
     
    Jzap99, Mar 29, 2008
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  2. danno

    danno Member

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    I believe the purpose of that sleeve is to keep the plunger dry,so it won't rust. I put a rebuild kit in a Honda master cylinder,and forgot to install that boot,er,uh sleeve,The end result was that the plunger rusted, the rust pits tore the master cylinder seal and created a brake fluid squirt gun.Perhaps another member can chime in with further insight.
     
    danno, Mar 29, 2008
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  3. PainterD

    PainterD Active Member

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    That's a seal to keep the dirt out of the inside of the master cylinder. It does serve a purpose. You will more than likely have to get a re-biuld kit to get just the rubber as I don' think it's sold separately.
     
    PainterD, Mar 29, 2008
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  4. rpgoerlich

    rpgoerlich Member

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    Yeh, same thing here with the rust on the plunger tearing up the seal on the '80 xj650 when I got it.

    I didn't think you could get that rubber sleeve separate form the rebuild kit, can you ?
     
    rpgoerlich, Mar 29, 2008
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  5. PainterD

    PainterD Active Member

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    Ah, if there is rust on the plunger, you may need to rebuild it anyway?
    Chacal may be able to help you. He has alot of parts for these bikes he will sell you. PD
     
    PainterD, Mar 29, 2008
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  6. labelleb

    labelleb Member

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    You can get that part at BikeBandit.com I am ordering one for my 82 XJ650. Think it was $7.50 for that part alone.
     
    labelleb, Mar 29, 2008
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