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  1. #1
    New Member
    Join Date
    Jan 2014
    Posts
    14
    Location
    new port richey
    Tractor
    kubota b7100 / ls3033h

    Default Help. What's my problem? No lift power to bucket???

    No lift power to bucket... rev it to 2500 rpm and I can barely lift a round bale (700 pounds)... was never a problem before now. 250 hours on it, fluid looked good but I changed it and filters... same thing. Disconnected quick disconnects and plugged them back in. Adjustments under boot on control handle don't look like anything has moved, and it isn't just lift, but upward tilt that has very little power. Rear lift, pto, etc seem to be fine.

    It is an LS3033 HST.

    Dealer has no suggestions...

    Ideas???
    Last edited by vicg1; 07-14-2016 at 03:12 PM. Reason: additional info

  2. #2
    Gold Member
    Join Date
    May 2013
    Posts
    305
    Location
    Casco, Mi
    Tractor
    John Deere 325 Garden Tractor & LS R3039H

    Default Re: Help. What's my problem? No lift power to bucket???

    Quote Originally Posted by vicg1 View Post
    No lift power to bucket... rev it to 2500 rpm and I can barely lift a round bale (700 pounds)... was never a problem before now. 250 hours on it, fluid looked good but I changed it and filters... same thing. Disconnected quick disconnects and plugged them back in. Adjustments under boot on control handle don't look like anything has moved, and it isn't just lift, but upward tilt that has very little power. Rear lift, pto, etc seem to be fine.

    It is an LS3033 HST.

    Dealer has no suggestions...

    Ideas???
    Dealer has no suggestions!!!!!

    I'm guessing a main relief valve issue. Easily diagnosed with a hydraulic pressure gauge.

    I'd be calling LS corporate. Your dealer is subpar.

  3. #3
    New Member
    Join Date
    Jan 2014
    Posts
    14
    Location
    new port richey
    Tractor
    kubota b7100 / ls3033h

    Default Re: Help. What's my problem? No lift power to bucket???

    Quote Originally Posted by jaydee325 View Post
    Dealer has no suggestions!!!!!

    I'm guessing a main relief valve issue. Easily diagnosed with a hydraulic pressure gauge.

    I'd be calling LS corporate. Your dealer is subpar.
    I actually emailed them 3 weeks go and they never responded, so I called today and was put into a voice mail, still waiting for a call back...

  4. #4
    Platinum Member ozley's Avatar
    Join Date
    Mar 2005
    Posts
    676
    Location
    TN
    Tractor
    LS U5030C

    Default

    Quote Originally Posted by vicg1 View Post
    I actually emailed them 3 weeks go and they never responded, so I called today and was put into a voice mail, still waiting for a call back...
    I would go here Ken's Bolt on Grab Hooks <<Hydraulics>>
    And get the test set. They would give you a better guess.
    Attached Thumbnails Attached Thumbnails Help.  What's my problem?  No lift power to bucket???-image-1940874204-jpg  
    LS U5030C, International McCormick B-414 Gas

  5. #5
    Member
    Join Date
    Jul 2006
    Posts
    25
    Location
    Astoria, OR
    Tractor
    LS U5030

    Default Re: Help. What's my problem? No lift power to bucket???

    Quote Originally Posted by vicg1 View Post
    No lift power to bucket... rev it to 2500 rpm and I can barely lift a round bale (700 pounds)... was never a problem before now. 250 hours on it, fluid looked good but I changed it and filters... same thing. Disconnected quick disconnects and plugged them back in. Adjustments under boot on control handle don't look like anything has moved, and it isn't just lift, but upward tilt that has very little power. Rear lift, pto, etc seem to be fine.

    It is an LS3033 HST.

    Dealer has no suggestions...

    Ideas???
    It sounds like the set screw on the relief has backed off. Doesn't happen very often but does once in a while. The simplest way to check is tee in a 3000# pressure gauge into either the tilt or lift cylinder on the loader and max the stroke on the cylinder out to check the relief pressure. I don't recall the exact relief setting for that tractor off the top of my head but I think it's ~2300ish psi.
    Jeremy L.
    Ag-Bag Forage Solutions
    Astoria, OR

    LS, Deutz-Fahr, Hustler, Cub Cadet and lots of other stuff.

  6. #6
    Super Star Member LD1's Avatar
    Join Date
    Apr 2008
    Posts
    15,368
    Location
    Central Ohio
    Tractor
    Kubota MX5100

    Default Re: Help. What's my problem? No lift power to bucket???

    Ditto, get a gauge.

    Take off one of the quick connects on the loader valve....usually the male end. Go to a hydraulic shop, get a coupling to fit, a 3000psi gauge, and whatever adapter needed to connect the two.

    Then go home, connect instead of one of the loader hoses. Actuate the coorsponds valve and report back what the pressure was.

    Till you do that, best anyone can do is take a WAG
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    MX5100 DIY Remotes
    MX5100 Diverter install

    Ford 5500 Backhoe
    Kubota MX5100HST w/LA844
    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
    Sachs-Dolmar 120SI Ported
    (4) Sachs-Dolmar 116SI Ported
    Dolmar PS540
    Sachs-Dolmar 115i
    Sachs-Dolmar 117
    Sachs-Dolmar 112

  7. #7
    New Member
    Join Date
    Jan 2014
    Posts
    14
    Location
    new port richey
    Tractor
    kubota b7100 / ls3033h

    Default Re: Help. What's my problem? No lift power to bucket???

    I'm on it guys! Will be back out there working Monday. Will update with my findings. Thanks for the tips!

  8. #8
    New Member
    Join Date
    Jan 2014
    Posts
    14
    Location
    new port richey
    Tractor
    kubota b7100 / ls3033h

    Default Re: Help. What's my problem? No lift power to bucket???

    Well here it is.

    I was away on vacation, came back, and looked at the tractor. I was actually getting ready to measure my line fittings to order that gauge kit... it's been over a month, with 4 calls to LS (manufacturer, not dealer) and each time they tell me someone in their tech department will call me... they never have.

    I noticed in the first minute or so of running it seems to have power to lift... touching the hydraulic lines they are really hot after a little driving, so hot they will burn you... so I start thinking. I have had this tractor 2 years now. I routinely clean the screen in front of the radiator... but after looking at it the HST cooler is in front of the screen! The screen was in front of the radiator when I got the tractor and I put it back in the same place every time I cleaned it... well with the HST option you get an HST cooler and the screen should go in front of that as well, not between it and the radiator! Seems like the screen was put in place by the factory or dealer in the position which would be correct for a manual transmission tractor, not an automatic with a second hydraulic fluid cooler.

    I cleaned the HST cooler with water, a ton of dirt came out of it (2 years worth). Now when running the tractor for an hour the hydraulic hoses are warm, but not hot... and definitely no where near hot enough to burn... Guess what? My bucket now lifts just fine.

  9. #9
    Super Star Member LD1's Avatar
    Join Date
    Apr 2008
    Posts
    15,368
    Location
    Central Ohio
    Tractor
    Kubota MX5100

    Default Re: Help. What's my problem? No lift power to bucket???

    Glad you got it fixed.

    My mx5100 is the same way. HST cooler in front of radiator screen. Always make sure I keep it clea
    ".........there is only one way to find out."
    "Ok, hold my beer and watch this.........."


    MX5100 DIY Remotes
    MX5100 Diverter install

    Ford 5500 Backhoe
    Kubota MX5100HST w/LA844
    2005 Dodge 3500 4x4 Diesel
    8N Rebuilt and restored
    Bushhog 306
    3 Homemade wood hauling trailers
    Dolmar 6400 84cc ported
    Sachs-Dolmar 120SI Ported
    (4) Sachs-Dolmar 116SI Ported
    Dolmar PS540
    Sachs-Dolmar 115i
    Sachs-Dolmar 117
    Sachs-Dolmar 112

  10. #10
    Platinum Member ozley's Avatar
    Join Date
    Mar 2005
    Posts
    676
    Location
    TN
    Tractor
    LS U5030C

    Default

    I would change that fluid soon I would think it has been cooking for awhile now. There is a lot of expensive parts counting on that fluid.
    LS U5030C, International McCormick B-414 Gas

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