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  1. #1
    Join Date
    Feb 2011
    Posts
    212

    changing gear lube on IH cnc

    can anyone tell me where the drain plug is Also where the filler is ( I think it is the pipe on the top left on my mill ) also how much fluid to replace after I drain it


    Thanks in advance

  2. #2
    Join Date
    May 2008
    Posts
    1185

    Re: changing gear lube on IH cnc

    Filler is the vent cap. The drain is a plug on the underside of the head.

    A lighter oil is fine too for less heat.
    youtube videos of the G0704 under the name arizonavideo99

  3. #3
    Join Date
    Feb 2011
    Posts
    212

    Re: changing gear lube on IH cnc

    Quote Originally Posted by arizonavideo View Post
    Filler is the vent cap. The drain is a plug on the underside of the head.

    A lighter oil is fine too for less heat.
    Thanks I will look into it.

  4. #4
    Join Date
    Jun 2013
    Posts
    41

    Re: changing gear lube on IH cnc

    As Arizonavideo mentioned, the head is filled through the breather cap and the drain is inside the cavity under the head. The head will take about 3.75 quarts of oil (to center of sight glass). We recommend 30 weight non-detergent oil along with 8 oz. of standard Lucas oil additive. Add the Lucas first to avoid overfilling the head.

  5. #5
    Join Date
    Feb 2011
    Posts
    212

    Re: changing gear lube on IH cnc

    Great and the drain bolt is underneath the head it looks like a 1/2-13 bolt ? Or at least on mine that's the only bolt I see

  6. #6
    Join Date
    Jun 2013
    Posts
    41

    Re: changing gear lube on IH cnc

    It will definitely be metric. The factory has changed them slightly over the years. Currently they are 12mm x 1 thread with an O-ring and 10mm Allen head.

  7. #7
    Join Date
    Feb 2011
    Posts
    212

    Re: changing gear lube on IH cnc

    ok I will look when I get off of work and go from there. Thanks for you help

  8. #8
    Join Date
    Nov 2003
    Posts
    287

    Re: changing gear lube on IH cnc

    Take the cover off and dump the gears out along with the oil, Switch to belt drive. You will never regret it.

  9. #9
    Join Date
    Feb 2011
    Posts
    212

    Re: changing gear lube on IH cnc

    You have info on a direct replacement ? I would love a quite mill lol with higher rpm
    Quote Originally Posted by vertcnc View Post
    Take the cover off and dump the gears out along with the oil, Switch to belt drive. You will never regret it.

  10. #10
    Join Date
    Nov 2003
    Posts
    287

    Re: changing gear lube on IH cnc

    well Arizonavideo was making belt drives i think. i have drawings that i used to convert my MD001 which i believe is very similar. You would need a lathe and mill to make the parts. Mine uses a keyway machined in the spindle shaft.
    Its not really a cheap upgrade to get the full potential you would need a 3 phase motor and VFD

  11. #11
    Join Date
    Feb 2011
    Posts
    212

    Re: changing gear lube on IH cnc

    Well no have the 3 phase 3 hp motor already on this mill. I will look more into this.

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