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Thread: Lockdown Leadscrew nut Loose (part 57)

  1. #1
    Join Date
    Dec 2007
    Location
    Lafayette La.
    Posts
    126

    Default Lockdown Leadscrew nut Loose (part 57)

    I'm having aproblem with the lockdown leadscrew nut being loose on the crank side.
    I can't crank down enough because when i get down to about 30 lbs the screw wobbles
    out. I just get clicks and not enought head pressure. I need to tighten the lead screw jam nut
    but there is hardly any space to do so. Do I need to take the leadscrew (part 29) out completely
    and go at the Leadscrew jam nut swith a Socket? has anybody had this problem before?

    help!
    Carwright "A" machine
    carvetight spindle
    Heavy duty Traction Belts
    Designer 1.187
    Homemade CNC machine
    Homemade 3-d printer

  2. #2
    Join Date
    Nov 2008
    Location
    Vancouver Island
    Posts
    8,193

    Default

    If I recall, the nut is supposed to float. That may not be the cause of your problem. (If it wobbled out as you say and turned, the head would become unlevel, woundn't it?)

    Look again at the situation. Check for head level, jamming corner posts, striped threads,...

  3. #3
    Join Date
    Dec 2007
    Location
    Lafayette La.
    Posts
    126

    Default

    i've done all of that,Leveled the head several times , lubed the posts --it's so wobbly that it's seems that's the only thing that
    it could be .
    it's not turning, it's just wobbly.
    Carwright "A" machine
    carvetight spindle
    Heavy duty Traction Belts
    Designer 1.187
    Homemade CNC machine
    Homemade 3-d printer

  4. #4
    Join Date
    Dec 2007
    Location
    Lafayette La.
    Posts
    126

    Default

    Ok that's not it -- I tightened this screw up a bit and I'm still getting 25 lbs on the front
    roller and 30 lbs on the back roller.

    I'm thinking it's the clutch, How can I stiffen the clutch a little to give me the proper
    pressures. washers ? stretch the spring?
    Carwright "A" machine
    carvetight spindle
    Heavy duty Traction Belts
    Designer 1.187
    Homemade CNC machine
    Homemade 3-d printer

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