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  1. #11
    Silver Member ksbrdmkr's Avatar
    Join Date
    Aug 2013
    Posts
    165
    Location
    Paola, KS
    Tractor
    NH TN55S, DK45SE Cab,

    Default Re: Hydrostat Whine

    The "whine" has let me know when I have ignored the 4wd light and nor clicked off the 4wd when on the road.
    NH TN55S, Kioti DK45SE, Kubota G4200HST, Grasshopper 618, Ford E350 power stroke, Jeep Comanche

  2. #12
    Gold Member
    Join Date
    Apr 2014
    Posts
    443
    Location
    Oak Ridge, NJ
    Tractor
    Kioti 2014 CK2510 TLB

    Default Re: Hydrostat Whine

    I've read here where people experience less whine with different UTF. IDK. I'm just about to change my fluids and wouldn't mind less whine.
    2006 Kawasaki 360 Prairie
    1988 Honda Fourtrax 300
    Stihl 025

  3. #13
    Super Member Coyote machine's Avatar
    Join Date
    May 2009
    Posts
    5,318
    Location
    Southern VT
    Tractor
    '10 Kioti DK 40se/hst KL-401 FEL, loaded tires, KB-2485 bhoe, Tuffline TB160 boxblade, Woods QA forks, MIE Hydraulic bhoe thumb & ripper tooth, Igland 4001 winch, & GR-20 Log Grapple. Woods BBX72" Mower. Diamondplate aluminum canopy.

    Default Re: Hydrostat Whine

    Quote Originally Posted by Buggs67 View Post
    I've read here where people experience less whine with different UTF. IDK. I'm just about to change my fluids and wouldn't mind less whine.
    Good luck with fluid change getting rid of the whine. All I know is the DK-40 squeal in reverse instantly goes away, never to return, with the kit that Kioti developed for the issue.
    2010 DK-40se/hst, Kioti KL-401 FEL, (reversible Kioti cutting edge), 72" Ratchet Rake. Fit Rite Top-N-Tilt hydraulics & diverter valve. HLA Series 2000 7' snowplow, Aquiline MPC rear chains. Samuri Sickle bar.

    Scag Wildcat: Kawasaki 26HP, with bagger. Dr. brush mower, & 42" lawn deck, Dr. self propelled, 6.5HP Trimmer mower. Pro-Mow 3 gang mower, no HP.

    Bunch of STIHL chainsaws: 011x 2, MS192T, MS200T, MS180C, MS230, MS270 (Wood Boss), 038 Farmboss, '86 anniversary edition.

  4. #14
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    17,724
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Hydrostat Whine

    Quote Originally Posted by Coyote machine View Post
    Good luck with fluid change getting rid of the whine. All I know is the DK-40 squeal in reverse instantly goes away, never to return, with the kit that Kioti developed for the issue.
    Yes it does. The kit is nothing more than a T fitting and a 2 foot piece of high pressure hose dead ended. It is a lot like the dead ended pipes that plumbers put on supply lines to stop "water hammer" from happening.
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  5. #15
    Veteran Member KiotiKowboy's Avatar
    Join Date
    Apr 2014
    Posts
    1,466
    Location
    Northeastern Oklahoma
    Tractor
    Kioti DK50SE HST Cub Cadet UTV Swisher RC17552BS NRA_Life

    Default Re: Hydrostat Whine

    OK ... I was in the DK50 today, cabbed, for an hour or so and paid special attention to the HST. Unless I lugged the rpms, the HST was almost unnoticeable. Maybe I'm just lucky.

    Someone mentioned fluid - I use the TSC Travelers UTF. I felt it was a higher quality than the Xtreme the dealer sold.

  6. #16
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    17,724
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Hydrostat Whine

    Quote Originally Posted by KiotiKowboy View Post
    OK ... I was in the DK50 today, cabbed, for an hour or so and paid special attention to the HST. Unless I lugged the rpms, the HST was almost unnoticeable. Maybe I'm just lucky.

    Someone mentioned fluid - I use the TSC Travelers UTF. I felt it was a higher quality than the Xtreme the dealer sold.
    I rarely can hear mine over the engine unless I am really loading it in Med or HI
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  7. #17
    Super Member Coyote machine's Avatar
    Join Date
    May 2009
    Posts
    5,318
    Location
    Southern VT
    Tractor
    '10 Kioti DK 40se/hst KL-401 FEL, loaded tires, KB-2485 bhoe, Tuffline TB160 boxblade, Woods QA forks, MIE Hydraulic bhoe thumb & ripper tooth, Igland 4001 winch, & GR-20 Log Grapple. Woods BBX72" Mower. Diamondplate aluminum canopy.

    Default Re: Hydrostat Whine

    Quote Originally Posted by k0ua View Post
    Yes it does. The kit is nothing more than a T fitting and a 2 foot piece of high pressure hose dead ended. It is a lot like the dead ended pipes that plumbers put on supply lines to stop "water hammer" from happening.
    It's been a while, but IIRC, the T is a new/different/revised piece from what OE fitting was and it allows flow to the length of hyd hose. Once in place all hydro squeal is gone.

    Quote Originally Posted by KiotiKowboy View Post
    OK ... I was in the DK50 today, cabbed, for an hour or so and paid special attention to the HST. Unless I lugged the rpms, the HST was almost unnoticeable. Maybe I'm just lucky.

    Someone mentioned fluid - I use the TSC Travelers UTF. I felt it was a higher quality than the Xtreme the dealer sold.
    If you had the squeal in reverse it would be very apparent - there is no mistaking it if it's present. It's NOT about the fluid type used, it IS about the internal valve(s) on some of the DK series, and the retrofit kit is the absolute cure. Can't speak specifically to the CK series - that noise/whine/ issue could be similar cause/effect or not.
    2010 DK-40se/hst, Kioti KL-401 FEL, (reversible Kioti cutting edge), 72" Ratchet Rake. Fit Rite Top-N-Tilt hydraulics & diverter valve. HLA Series 2000 7' snowplow, Aquiline MPC rear chains. Samuri Sickle bar.

    Scag Wildcat: Kawasaki 26HP, with bagger. Dr. brush mower, & 42" lawn deck, Dr. self propelled, 6.5HP Trimmer mower. Pro-Mow 3 gang mower, no HP.

    Bunch of STIHL chainsaws: 011x 2, MS192T, MS200T, MS180C, MS230, MS270 (Wood Boss), 038 Farmboss, '86 anniversary edition.

  8. #18
    Super Star Member k0ua's Avatar
    Join Date
    Jun 2009
    Posts
    17,724
    Location
    Branson, Mo.
    Tractor
    Kioti DK35se Hydrostat

    Default Re: Hydrostat Whine

    The squeal in reverse is nothing like the normal hydro whine.. The squeal in reverse sounded like fingernails on a chalkboard, more or less. It was very rare on my DK35se, I had to run it hard in hot weather for a couple of hours nonstop, then it would start. But I have run it for many hours nonstop in 90 degree heat and the problem is gone after the instal of the kit.
    James KUA

    Kioti DK35se hydrostat with 2 QA buckets, 48 inch. King Kutter Rotary Cutter. 750 lbs ballast box. Loaded tires, Construction Attachments SSQA Lightweight Pallet forks. EA 50 inch single lid "wicked" Grapple. Satisfied Everlast PA160 welder owner How to add a link to a post . Best way to search TBN


  9. #19
    Super Member Coyote machine's Avatar
    Join Date
    May 2009
    Posts
    5,318
    Location
    Southern VT
    Tractor
    '10 Kioti DK 40se/hst KL-401 FEL, loaded tires, KB-2485 bhoe, Tuffline TB160 boxblade, Woods QA forks, MIE Hydraulic bhoe thumb & ripper tooth, Igland 4001 winch, & GR-20 Log Grapple. Woods BBX72" Mower. Diamondplate aluminum canopy.

    Default Re: Hydrostat Whine

    Quote Originally Posted by k0ua View Post
    The squeal in reverse is nothing like the normal hydro whine.. The squeal in reverse sounded like fingernails on a chalkboard, more or less. It was very rare on my DK35se, I had to run it hard in hot weather for a couple of hours nonstop, then it would start. But I have run it for many hours nonstop in 90 degree heat and the problem is gone after the instal of the kit.
    Wasn't saying they were the same noise. What I stated above is that if the squeal in reverse is present on a particular tractor one doesn't have to do anything but drive it and the squeal will show up, especially in reverse. Other whines, from a hydro, are in a different category, they may come and go, and can't be heard at the other end of most neighborhoods, like the reverse squeal can.
    2010 DK-40se/hst, Kioti KL-401 FEL, (reversible Kioti cutting edge), 72" Ratchet Rake. Fit Rite Top-N-Tilt hydraulics & diverter valve. HLA Series 2000 7' snowplow, Aquiline MPC rear chains. Samuri Sickle bar.

    Scag Wildcat: Kawasaki 26HP, with bagger. Dr. brush mower, & 42" lawn deck, Dr. self propelled, 6.5HP Trimmer mower. Pro-Mow 3 gang mower, no HP.

    Bunch of STIHL chainsaws: 011x 2, MS192T, MS200T, MS180C, MS230, MS270 (Wood Boss), 038 Farmboss, '86 anniversary edition.

  10. #20
    Elite Member coobie's Avatar
    Join Date
    Sep 2004
    Posts
    3,054
    Location
    S.Michigan
    Tractor
    Kubota RTV 900, JD 740,Kioti DK 40 with KL401 loader .

    Default Re: Hydrostat Whine

    Quote Originally Posted by Coyote machine View Post
    Good luck with fluid change getting rid of the whine. All I know is the DK-40 squeal in reverse instantly goes away, never to return, with the kit that Kioti developed for the issue.
    100 percent agree.My Kioti dealer installed the kit CM is speaking of and the whine was totally gone.
    Kioti DK40se hst cab with KL401 loader,Kubota RTV 900,John deere X740,Kioti 73 inch tiller.Ingersoll 4020 3pt,troy bilt tiller,Billy goat brush cutter.

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