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Master cylinder sight glass replacement question 1982 XJ650RJ

Discussion in 'XJ Technical Chat' started by JMark, Apr 30, 2022.

  1. JMark

    JMark Member

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    Hey folks! I have my M/C cleaned up and ready for the new sight glass, and noticed in Len's instructions that it says to do the rebuild BEFORE installing the sight glass. This seems counterintuitive to me as reinstalling the piston, etc requires lubing with brake fluid and stuff, all of which I just cleaned OFF of the area for the permatex to adhere to. Am I missing something? I also don't see the advantage of waiting to install it after those are replaced.

    Thanks!
     
    JMark, Apr 30, 2022
    #1
  2. bensalf

    bensalf Well-Known Member

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    i installed my sightglasses (3 of ) after strip down and before repaint and rebuild,
    i used the watch glass crystal and black silicon sealant (RTV), didnt have any problem with rebuilding piston etc as it only needs a smear of fluid to rebuild
     
    bensalf, May 1, 2022
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  3. JMark

    JMark Member

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    Thanks! That's what I was thinking.
     
    JMark, May 1, 2022
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  4. XJ550H

    XJ550H Well-Known Member Premium Member

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    XJ550H, May 1, 2022
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    JMark likes this.

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