1025R momer deck dropping
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    AirCav's Avatar
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    1025R momer deck dropping

    I was cutting the grass today and I noticed that when I raised the mower deck to the transport position using the SCV, in a short time it would just return to the lowest position. At first I thought i might have jostled the control and I went so far to even lock the SCV valve in place and it still falls. Will drop from the transport position to the set cutting height (I have it set at about 3 inches ) in less than 30 seconds. Any ideas?

    I noticed as I hadn't cut the grass in a while (lots of rain) so I wanted to cut it high and then redo it in a couple of days

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    Captain Hook Kennyd's Avatar
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    Unfortunately, its quite normal. The lift cylinder bleeds off quickly so you must use the dial set to the lockup position to hold the deck from falling.
    Kenny

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    Bonehead Club Lackey Levi's Avatar
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    Quote Originally Posted by Kennyd View Post
    Unfortunately, its quite normal. The lift cylinder bleeds off quickly so you must use the dial set to the lockup position to hold the deck from falling.
    Kenny if that's the case can you tell me what's wrong with mine as it never falls. I've left it in the up position for days and it stays right there. So in my case it wouldn't be normal. Is it supposed to bleed off and if so is there something wrong with mine?
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    etcallhome's Avatar
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    AirCav has hyd lift ,,, guessing you have mechanical lift
    Gene

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    Bonehead Club Lackey Levi's Avatar
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    Quote Originally Posted by etcallhome View Post
    AirCav has hyd lift ,,, guessing you have mechanical lift
    You're absolutely right etcallhome. So that makes a difference?! Good to know.
    1026R -- 60D mmm -- H120 Loader -- Curtis 150 Tiller -- DR 3 point Chipper -- Howse Middle Buster -- Brinly 16 Blade Disk -- Kodiak 5' Box Blade -- 12-42 lb. suitcase weights -- Lawn roller -- Upgraded seat springs from psrumors -- Kennyd's bolt on hooks & clevis -- BXpanded tooth bar -- CMI 6' wagon -- Heavy Hitch Cultivator /garden bedder / hiller attachments --

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    Captain Hook Kennyd's Avatar
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    Quote Originally Posted by Levi View Post
    You're absolutely right etcallhome. So that makes a difference?! Good to know.
    Yes, that's the difference. The SA (single acting) cylinder use to lift the deck in the hydraulic set leaks down badly, not sure why Deere continues them-there are certainly better SA cylinders out there that don't drift like those do.
    Levi likes this.
    Kenny

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    DeereNC's Avatar
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    Hydraulic cylinders aren't Deere's strong point... We had a field cultivar where one side would seep down, especially when it was folded up. All newer ones will seem down over night when left unfolded.

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    Quote Originally Posted by Kennyd View Post
    Yes, that's the difference. The SA (single acting) cylinder use to lift the deck in the hydraulic set leaks down badly, not sure why Deere continues them-there are certainly better SA cylinders out there that don't drift like those do.
    I thought that leak down was due to the SCV and not the cylinder itself?


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    Captain Hook Kennyd's Avatar
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    Quote Originally Posted by Milharri View Post
    I thought that leak down was due to the SCV and not the cylinder itself?
    Probably a little of both, but in this case since they bleed off so fast I'd say mostly the cylinder is at fault.
    Kenny

    -John Deere 3720 Deluxe Cab TLB
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    Quote Originally Posted by Kennyd View Post
    Probably a little of both, but in this case since they bleed off so fast I'd say mostly the cylinder is at fault.
    Ok. I was just going by what Brian told me when I was asking about top link bleed down (speaking of that I should post a review and video of my top link from him). I am not a hydraulics expert but I try to understand what's happening.


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