8630 quad-range planetary and brake piston housing
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Thread: 8630 quad-range planetary and brake piston housing

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    8630 quad-range planetary and brake piston housing

    working on the brake piston housing for the quad range planetary assy. on the side of the housing, around the oil tube there is a set screw with a nut retaining a spring and ball that rides on the shift valve, is there any guidance on how to properly set the depth of this set screw (spring tension), i do not have the old set screw to measure

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    johnH123's Avatar
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    It sounds like its just a detent. I would just count how many turns it takes to get it out and then put it in the same amount.
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    Quote Originally Posted by johnH123 View Post
    It sounds like its just a detent. I would just count how many turns it takes to get it out and then put it in the same amount.
    that's what i figured, but i wasn't for sure looking at it closer i don't really see why its adjustable, the older models use just a bolt at a set depth. either way thanks for the input!

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    flyweight's Avatar
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    hillbilly,

    Is this the set screw(21) you're asking about?

    Click image for larger version. 

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    Michael

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    flyweight's Avatar
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    If so, adjust it to where the lower valve(13) moves(while air testing) when shifting valve(6) up & down.
    If screwed down too far, the lower valve(13) may not move.
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    Michael

    2019 JD Z540R, 54" cutting deck w/MulchControl™
    1984 JD 750 Tractor
    1971 JD 15 Chainsaw, ← hasn't run since ~1975

    Also have a bunch of other useless stuff.










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    Quote Originally Posted by flyweight View Post
    If so, adjust it to where the lower valve(13) moves(while air testing) when shifting valve(6) up & down.
    If screwed down too far, the lower valve(13) may not move.

    Yes, that is what i was referring to and much appreciate the help!
    flyweight likes this.

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