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IndustryArena Forum > MetalWorking Machines > Uncategorised MetalWorking Machines > Clogged oil lines, Leadwell MCV OP CNC Mill
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  1. #1
    Join Date
    Mar 2011
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    Clogged oil lines, Leadwell MCV OP CNC Mill

    Hi guys.

    Its been slow progress again, this time with the lubrication lines.
    So the lubrication lines are blocked, I have pulled a few lines out and unclogged them but the other lines are difficult to access.
    I have cleaned out the oil tank, replaced the oil pump motor and is working well but unfortunately the X and Y line are blocked and im hesitant to use the machine until these lines are ok. (I have manually oiled the X Y slides)
    So just wondering is there a cleaner I can pump through the lines? I read on the internet some people using ATF im guessing that is automatic transmission fluid? Is Kerosene ok? Will this harm the seals or the plastic oil lines?
    Any advice would be great, but im really trying to avoid pulling the table off get to the other oil lines.

    Thanks
    Bart

  2. #2
    Join Date
    Jan 2005
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    15362

    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Quote Originally Posted by toranacar View Post
    Hi guys.

    Its been slow progress again, this time with the lubrication lines.
    So the lubrication lines are blocked, I have pulled a few lines out and unclogged them but the other lines are difficult to access.
    I have cleaned out the oil tank, replaced the oil pump motor and is working well but unfortunately the X and Y line are blocked and im hesitant to use the machine until these lines are ok. (I have manually oiled the X Y slides)
    So just wondering is there a cleaner I can pump through the lines? I read on the internet some people using ATF im guessing that is automatic transmission fluid? Is Kerosene ok? Will this harm the seals or the plastic oil lines?
    Any advice would be great, but im really trying to avoid pulling the table off get to the other oil lines.

    Thanks
    Bart
    Are you sure the lines are blocked, normally the oil restrictors are what get blocked and most need replacement as the don't clean out very well

    What is the pressure of the oil pump?? most are too low, if you can try some high pressure on the lines with a penetrating oil you may get them clear
    Mactec54

  3. #3
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    230

    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Thanks Mactec54

    You're right about the lines, the lines are ok but the restrictors are very blocked. Like crap cacked in there really bad. I managed to pull them off and cleaned them which was very hard to get to.
    I prefer to replace them because i dont want to put them back in and have to remove them again so soon.
    Where would i buy these? I know the restrictors have M8 metric thread.
    Click image for larger version. 

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  4. #4
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Few more pictures of the other manifold.
    Attachment 484960
    Click image for larger version. 

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  5. #5
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Quote Originally Posted by toranacar View Post
    Few more pictures of the other manifold.
    Attachment 484960
    Click image for larger version. 

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    Here is a supplier

    https://www.bijurdelimon.com/industries-served.html

    https://www.bijurlubrication.com/
    Mactec54

  6. #6
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Thank you, awesome.

  7. #7
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Hi guys, just wondering what the torque settings would be for the rail bolts?
    Are the torque settings critical or should they just be tight?

    Thanks
    Bart

  8. #8
    Join Date
    Jan 2013
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    474
    Quote Originally Posted by toranacar View Post
    Hi guys, just wondering what the torque settings would be for the rail bolts?
    Are the torque settings critical or should they just be tight?

    Thanks
    Bart
    Depends what tensile strength the bolts have and their size. Use a chart for this, the bolts could be 8.8cr to 10.8 so the torque settings are very different.

  9. #9
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    230

    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Just trial fitting one of the rails. pretty straight forward.
    Broke one of the bolts when tightened down the rail so i think ill replace all 52 of the bolts.

    Attachment 486314

  10. #10
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    Mar 2011
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    So i got stuck into it and removed the old rails.
    Cleaned and stoned and cleaned again, tapped the threads to make sure they're clean. Cleaned again and sprayed WD40 to make sure rust can't start.
    Before install ill clean again before i mount the new rails as it gets dusty.

    Attachment 486254

    Attachment 486256

  11. #11
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    230

    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    So I discovered an oil leak on one of the main lubrication hoses and started to replace it. Then i discovered one of the other lubrication (small) tubes was broken.
    So to do this properly i decided to take the table off and replace all the plastic oil tubes.
    I found a company called Enzed who make hoses and hose end fittings.
    I don't think the oil pressure is that great in these tubes.
    Also while at this point the linear slides are a bit noisy.

    Attachment 485414

  12. #12
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    Jan 2005
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    15362

    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Quote Originally Posted by toranacar View Post
    So I discovered an oil leak on one of the main lubrication hoses and started to replace it. Then i discovered one of the other lubrication (small) tubes was broken.
    So to do this properly i decided to take the table off and replace all the plastic oil tubes.
    I found a company called Enzed who make hoses and hose end fittings.
    I don't think the oil pressure is that great in these tubes.
    Also while at this point the linear slides are a bit noisy.

    Attachment 485414
    Looks like it needs a major cleanup, Enzed have been around for 50 Years they used to only specialize in Hydraulic lines and fittings, your tubing is nylon, and you can get that at most pneumatic cylinder / fitting's suppliers as well if they don't have it, a lot of machines use 4mm or 3/32" nylon tubing the larger flexible tubes, you will most likely have to use the same ends and have new hose attached with new crimp sleaves which Enzed may not have, sometimes you have to custom make the crimp sleeves, you may get lucky and be able to use what they have for those hoses
    Mactec54

  13. #13
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Thanks Mactec54
    Ill specify to Enzed they are nylon

  14. #14
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Ill definitely clean up with degreaser and vacuum.

    I should mention the linear slides are a little noisy. Maybe i should look at replacing them but not too sure where i would find them for a Leadwell MCV OP

  15. #15
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Quote Originally Posted by toranacar View Post
    Ill definitely clean up with degreaser and vacuum.

    I should mention the linear slides are a little noisy. Maybe i should look at replacing them but not too sure where i would find them for a Leadwell MCV OP
    Linear Rails and Bearings have good standards so any company that sell Linear rails and Bearings will be able to match them up, if you can't find a manufacturers name on them there will be a number on the Linear Bearing that will indicate what you have and in most cases who made them
    Mactec54

  16. #16
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Thanks again mate

  17. #17
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    0,045mm = 0.00177165"

  18. #18
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Quote Originally Posted by toranacar View Post
    0,045mm = 0.00177165"
    You want it better than that, if the Bearing blocks are Preloaded, if they are not Preloaded, I would still try for around 0.0006" / 0,016mm, you may have to scrape the shoulders where needed to correct it

    Make sure you are using the correct edge of the rail; some are marked which is the Datum Edge / Reference Edge of the Rail, this edge has to go against the shoulder.
    Mactec54

  19. #19
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Oh there's a mark, i didn't know that, still learning i guess
    Thank you mate.

  20. #20
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    Re: Clogged oil lines, Leadwell MCV OP CNC Mill

    Hi guys, Im just measuring the parallel on my rails and im getting 0.045mm from one end of the rails to the other. I dont have the manual which tells me if this is outside machines specification.
    Just wondering if anybody can suggest this is ok or not??
    Attachment 487118
    Attachment 487120
    Attachment 487122

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