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Anyone familiar with Hypro D-50 pumps?

Discussion in 'Pesticide & Herbicide Application' started by Pilgrims' Pride, Jun 2, 2005.

  1. Pilgrims' Pride

    Pilgrims' Pride LawnSite Senior Member
    from MA.
    Messages: 481

    I've been doing some heavy tree spraying lately and I notice that the oil in the pump is frothy and white.
    I've also lost some pressure.
    I'm guessing that somehow the oil is getting water in it now.
    Can I rebuild?
    Can I rebuild on the frame or will I need to take it off?

    Thanks in advance,

  2. SodKing

    SodKing LawnSite Bronze Member
    Messages: 1,641

    You should be able to replace the diaphragms on the frame but usually it is easy to take it iff the truck and do it.
  3. Enviro Green

    Enviro Green LawnSite Senior Member
    Messages: 324

    Yes, you have busted at least one diaphragm. You need to replace them asap, you have lost lubrication and need to fix this problem.

    Call lesco and order the parts and they will also send you a tech sheet to help you and you can also call them for technical assistance.

    It's easy, takes about one hour or so and you don't have to take anything off a truck provided you can get to the pump easily.

    Rebuild your pumps at least once per year, twice if you work them a lot.

  4. Pilgrims' Pride

    Pilgrims' Pride LawnSite Senior Member
    from MA.
    Messages: 481

    What parts should I order or is there a general rebuild kit?

  5. lawn king

    lawn king LawnSite Silver Member
    Messages: 2,408

    Lesco will do the job for around $150. if you don't have the time. Scott.
  6. GreenUtah

    GreenUtah LawnSite Senior Member
    from SLC, UT
    Messages: 866

    there are diaphragm kits available for all the pumps in the hypro lines, it will include the diaphragms and most of the o rings for the valves and inlets. I'd say it's definitely faster and easier to unbolt the pump and put it on a workbench, some of the bolts in the head will take some monster effort to get undone, easier to do if you can spin it to you than having it bolted up to the motor. there are many sources for parts for the hypros from lesco to farm supply places to pump houses. You need to know your model number and the rest is just a matter of finding the best price. BTW, if you have your owners manual for it with the parts explosion, you'll see the diaprhagm kit number toward the bottom.
  7. ToniDavies

    ToniDavies Sponsor
    Messages: 140

    Here is a link to the Hypro D50 manual that will help you out.
  8. ToniDavies

    ToniDavies Sponsor
    Messages: 140

  9. Runner

    Runner LawnSite Fanatic
    Messages: 13,497

    Many of times, the diaphram kit and the o-ring kit are two seperate items. Make sure you get both.
  10. cemars

    cemars LawnSite Senior Member
    Messages: 387

    One of the great things about Hypro pumps is that they are easy to repair/rebuild. I recommend doing this work yourself because once you have a few repairs under your belt you will be a Hypro pro. The parts are usually stocked at Lesco although they are a bit pricey. You will also need a quart of 10W-30.

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