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  1. #1
    Hi all
    i have a 3040 T machine. Had it for a few weeks now and slowly been learning my stuff
    its running with mach3 and I have managed a few good results. However it has developed a fault where the z axis will lift and stall partially but mach 3 still shows it's going up
    same problem going down sort of shunting as if it's getting stuck on the screw thread?
    can anyone shed any light on how to fix
    many thanks guys

  2. #2
    Check wiring to Z axis first.

  3. #3
    Ok thank you
    i have looked at the connections they seem ok but not delved too deep
    I will delve a bit further

  4. #4
    Quote Originally Posted by Janste View Post
    Hi all
    i have a 3040 T machine. Had it for a few weeks now and slowly been learning my stuff
    its running with mach3 and I have managed a few good results. However it has developed a fault where the z axis will lift and stall partially but mach 3 still shows it's going up
    same problem going down sort of shunting as if it's getting stuck on the screw thread?
    can anyone shed any light on how to fix
    many thanks guys
    Without the machine being powered and turning the motor by hand does it feel that it is binding if so that will need to be sorted. ..Clive

  5. #5
    Hi clive
    it isn't biding when I turn the knob at the top of the motor it's notchy but just like the other motors
    any other ideas I may try

  6. #6
    If you can swap connections around, try changing with another axis to see if the problem is transferred. If it is , it's electrical. If not it is mechanical.

  7. #7
    If Mach is showing it as moving but it's not is the Z axis coupling slipping?
    Neil...

    Build log...here

  8. #8
    I will try swapping the connections around and see what happens
    also will look to see if the z axis coupling slipping (not sure where to look for this tho?)

    thank you all for the positive replies
    I have heard the wiring to there are a little suspect
    would I be able to purchase better wiring from say Maplin (what size gauge etc)
    or is it a more specialized shop

    thanks

  9. #9
    Quote Originally Posted by Janste View Post
    I will try swapping the connections around and see what happens
    also will look to see if the z axis coupling slipping (not sure where to look for this tho?)
    It connects the Z axis stepper motor to the Z axis ballscrew/leadscrew....looks a bit like this probably...Click image for larger version. 

Name:	5pcs-Stepper-Motor-Flexible-Coupling-top-tight-L25xD20-5x8mm.jpg 
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    Neil...

    Build log...here

  10. #10
    thanks
    will I find allen type head bolt in the holes that may need tightening

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