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need pump help asap

Discussion in 'Pesticide & Herbicide Application' started by vaacutabove, Nov 29, 2012.

  1. vaacutabove

    vaacutabove LawnSite Bronze Member
    Posts: 1,006

    I have a d30 with milky looking the clear oil fill. Pulled the diaphragms and they are good. Less than a year old. It has been keep out side has been chilly but not to bad. Any ideas or put it back together and fill it w oil and run it. Is there a reason why it would would mix with water.
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  2. TurfWerks

    TurfWerks LawnSite Senior Member
    Posts: 309

    Since you have it appart replace the diaphrams and the rubber one in the dome. You have a hole somewhere. Make sure to clean out all old oil and fill with clean new..
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  3. vaacutabove

    vaacutabove LawnSite Bronze Member
    Posts: 1,006

    Do i have to put pressure on the dome when i put it back
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  4. TurfWerks

    TurfWerks LawnSite Senior Member
    Posts: 309

    Yes you have to apply pressure to the dome. Just takes an aircomprssor.. doesn't require a lot if air though..
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  5. vaacutabove

    vaacutabove LawnSite Bronze Member
    Posts: 1,006

    How much i thought it was like a few psi like a hand pump
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  6. TurfWerks

    TurfWerks LawnSite Senior Member
    Posts: 309

    I don't remember off hand seems like between 15 and 20.. could be wrong though...
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  7. RigglePLC

    RigglePLC LawnSite Fanatic
    Posts: 11,768

    I agree to replace the diaphragms. Water in oil is the usual cause of the milky look. Replace the diaphragms as they may have tiny cracks that are not really visible. You might as well have new diaphragms with fresh clean oil, and have a clean start for next year.
    I never bothered to replace the top rubber in the dome.
    Don't let pump freeze--costly to replace. Cover it with your electric blanket--or whatever you have.
     
  8. TurfWerks

    TurfWerks LawnSite Senior Member
    Posts: 309

    I agree cover it up good in the cold.. I usually clean my pumps and run rv antifreeze in them..
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  9. TurfWerks

    TurfWerks LawnSite Senior Member
    Posts: 309

    While I'm storing them that is..
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  10. WestGaPineStraw

    WestGaPineStraw LawnSite Senior Member
    Posts: 763

    I have one, you either have a pin hole in your diaphragm or it was frozen from the cold and pulled the diaphragm out of seat. Milky oil is water in the oil.

    The pulsating dampner, the dome piece, should have 20% psi of your spraying pressure.
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