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Thread: Master Cylinder Rebuild Help Please

Discuss the Austin Healey Sprite and the MG Midget. Two different but similar cars sometimes referred to collectively as the Spridget.

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    Jedi Warrior
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    Master Cylinder Rebuild Help Please

    OK- I'm an idiot.

    Rebuilding the master cylinder on our MK III Sprite w/a Moss 3/4" kit and referencing the Workshop Manual Figure M.5.

    Items 13- Secondary cups: these seat with the cup facing to the right?

    Items 10-Main Cups- these seat with the cup facing to right also, so that the spring sits in the cup, and centered on the little rubber nipple at the bottom of the cup?

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    Jedi Trainee Joe Schlosser's Avatar
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    Re: Master Cylinder Rebuild Help Please

    If my memory is correct, the edges of the two cups face the direction of motion of the piston when you apply the brakes. If that is to the right side of the pic of the shop manual then you got it right
    Joe Schlosser
    SCCA National License, Retired
    60 Bugeye, since 1966
    SCCA FP, sold but not forgotten

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    Jedi Warrior
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    Re: Master Cylinder Rebuild Help Please

    Thanks Joe! Too much self doubt the other day. Bench bled it today, installed, fingers crossed.

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    Yoda Jim_Gruber's Avatar
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    Re: Master Cylinder Rebuild Help Please

    And if that doesn't work you can always resleeve them in brass. Getting to those inside cups without scoring the bore can be troublesome.
    Jim Gruber - Apollo Beach, FL
    Bugsy I - '68 Sprite w BE Bonnet - Gone but not forgotten
    Bugsy IV - '60 Bugeye - 1,275+.040 and a 5-Speed - CA Car - 2nd Owner from new - 10/12 Painting done, reassembly, cutting, and buffing in progress.

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