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Recent content by AC-Power

  1. AC-Power

    Hydraulic Scissor Lift

    Thanks itsmoked. The problem with the lift actually was nothing hydraulic....it was just a bad ZETTER relay (automotive type, black cube, 30amp, one set of form C contacts). I bought the lift from Edmonton, approx a 3hr drive away from Calgary, but I have a 1-ton dually truck, so I got a local...
  2. AC-Power

    Hydraulic Scissor Lift

    Ok, as promised here is the picture of the recently repaired lift raised to 26' (platform height) above grade. I repaired this in my home's driveway, so the o/h lines feeding my house are in the picture. Again, thanks for your help! I TOTALLY benefited from your help! I have another post...a...
  3. AC-Power

    Hydraulic Scissor Lift

    Ok, I will do that. Once it quits raining here in Calgary, AB, I'll take a pic or two. It started yesterday, and is supposed to keep going until Wed/Thur. Too, I will check out the "threadminder" link you've suggested in this ENG-TIPS forum.
  4. AC-Power

    Is a grounding bushing still required

    I don't know the codes in MN, but it seems that using a grounding bushing is going to falter the reason why the CNC manufacturer wants an isolated ground, that is, an independent ground separate to the buildings common ground through its structure. When placed, levelled and secured, its likely...
  5. AC-Power

    SAW Welding

    I had this problem sometime ago. I will check our office history to see what it is we did to correct it.
  6. AC-Power

    Hydraulic Scissor Lift

    Ok, I finally got a pressure gauge. Checked the output at the proportional (prop) valve, nothing. Upon any command for hydraulic pressure, the prop valve routed the oil back to the tank. I checked for DC power at the prop valve, nothing! I thought I checked that before, but it appears I must...
  7. AC-Power

    Hydraulic Scissor Lift

    Ok, Thanks Again LittleInch. I'll go get a pressure valve today, and the necessary fittings. I'll let you know. Again, I take your suggestions very seriously....you are FAR more knowledgeable on this than myself as an electrician. Best Regards
  8. AC-Power

    Hydraulic Scissor Lift

    My replies are in RED: Ok, I did perform the first suggestion of LittleInch's most previous comment: LittleInch = "The pump should be producing flow (It does)and if controlled correctly (It is. Pump Inlet from reservoir, pump output to pressure compensated proportional valve, motor turning...
  9. AC-Power

    Hydraulic Scissor Lift

    Thanks So Much 3DDave and LittleInch for your advice. I really do take it seriously, and I apply your suggestions each day (or the next day, time permitting) that you recommend. The two of you are far smarter than I am with this. Naturally, I do good with electrical, but my experience in...
  10. AC-Power

    Hydraulic Scissor Lift

    The hydraulic pump is a positive displacement pump.....should it freely spin manually with only muscular force? The input and output oil line hoses are still connected, I haven't touched them. I don't feel it building pressure and producing resistance when rotating it by hand. Is this right?
  11. AC-Power

    Hydraulic Scissor Lift

    @LittleInch Good Day and Thanks for your reply. I am respondingRED: Did you follow the checklist in the service manual? I already accomplished the suggested remedies in the service manual, no success Are you holding in the enable button all the time while asking it to do anything? The...
  12. AC-Power

    Hydraulic Scissor Lift

    BTW - The hydraulic pump is still attached to its respective hydraulic oil lines. I only removed the pump from the motors mounting bolts. Pump is still connect to it's oil lines and still in the lifts hydraulic compartment.
  13. AC-Power

    Hydraulic Scissor Lift

    The spider coupling is fine.https://files.engineering.com/getfile.aspx?folder=ed4dcff6-2ccc-492e-a318-d21b223141ff&file=IMG_3567.JPG
  14. AC-Power

    Hydraulic Scissor Lift

    Picture herehttps://files.engineering.com/getfile.aspx?folder=6dc4cfa6-01ec-42b8-836a-77c1cabb49fa&file=IMG_3574.JPG
  15. AC-Power

    Hydraulic Scissor Lift

    I removed the motor from SkyJack scissor lift, and then removed the hydraulic pump from the motor. The hydraulic pump spins freely by muscular force! Is that right?
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