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E57 will not stay up

Discussion in 'Meyer / Diamond Products Discussion' started by snowdays, Feb 1, 2009.

  1. snowdays

    snowdays Senior Member
    from Ohio
    Messages: 119

    My E57 will not stay up. When raised, it drops in less than 5 seconds. I have replaced both A and B valves with known good ones. I also have checked the packing cup, cylinder and ram condition. When it falls, I hear a gurgling sound inside the pump. What should I check next?
     
  2. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Did you replace the packing cup and cylinder base O-ring after you did you inspection? If not. tear it down again and change them while at the same time checking over the sump base with a fine tooth comb looking for any cracks in the casting.
     
  3. CARDOCTOR

    CARDOCTOR PlowSite.com Addict
    Messages: 1,310

    i have a similar problem when i lift the blade, over time it goes down about an inch and no further the pump is full of fluid

    JR
     
  4. snowdays

    snowdays Senior Member
    from Ohio
    Messages: 119

    Yes, I did the packing cup, cylinder base o-ring and upper o-ring along with the wiper. This one drops all the way down. Are the 47 bases known for anywhere specific or common to look for cracks due to wear or water freezing. I will tear down again and look closely for cracks inside. As always, thanks B&B for the knowledge.
     
  5. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    Your issue is very common and likely due to rust/pitting and the very top of the lift cylinder (usually about the first inch). Once it leaks down to a "good" area of the cylinder the packing cup can then seal against the good portion of the cylinder wall.
     
  6. B&B

    B&B PlowSite Fanatic
    Messages: 12,777

    They'll split near where the cylinder O-ring seats in the sump base.

    And also in the cavity between the sump base and the gear pump...although there they'll leak externally.