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  1. #1
    Gold Member
    Join Date
    Mar 2005
    Posts
    254
    Location
    Talladega county, Sylacauga, AL
    Tractor
    Yanmar YM2020D Satoh Beaver III Yanmar 1500

    Default YM2020D new tires hard to release 4wd

    Just installed new set of tires from Hoye. before disengaging 4wd was easy release now it takes some extra pressure to move the leaver. I have tried changing the air pressure in the tires with some fair to poor results. currently change from forward to reverse will get pressure off. Any ideas

  2. #2
    Gold Member
    Join Date
    Mar 2002
    Posts
    466
    Location
    So MD
    Tractor
    Yanmar FX24D replaced with Massey GC2400

    Default Re: YM2020D new tires hard to release 4wd

    You're doing the right thing. Some pressure may be needed even in new tractors. The difference in circumference of the tires IIRC is ~5%, and when the difference exceeds that it may put pressure on the drive shaft. Just don't drive on road when in 4WD.

  3. #3
    Veteran Member
    Join Date
    Dec 2009
    Posts
    2,432
    Location
    gilmer tx
    Tractor
    yanmar 2002d

    Default Re: YM2020D new tires hard to release 4wd

    Did you get the same size tires?

  4. #4
    Elite Member Car Doc's Avatar
    Join Date
    Mar 2009
    Posts
    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: YM2020D new tires hard to release 4wd

    Try turning the front wheels rt or left while its still moving just at the point you want to move the 4wd lever. Mine does that also there is really no problem its just the ft/rr bias that has to be there so the fronts can turn w/o binding. They need to run a bit faster than the rears so I think what you have is normal albeit different than it was. hth
    Yanmar YM3810D, LT duty 3pt hoe, 6' KK2 tiller, 6' KK box blade, 6 1/2' KK disc, 5' Howse bush hog, 5' Howse back blade, 9" Yellow PHD, 3 Husky chain saws 346XP NE, 359, 372XP. 07 HD Heritage Softail, Crack injectors, check compression, take 2 beers and call me. "Hey you didn't build that."

  5. #5
    Platinum Member Scotty Dive's Avatar
    Join Date
    Feb 2010
    Posts
    775
    Location
    Ct
    Tractor
    Yanmar 2020D

    Default Re: YM2020D new tires hard to release 4wd

    I really don't have much to add to this because I have no experience with shifting from 4wd to 2wd on my 2020 on the original rice tires - I changed them out almost immediately after I bought my tractor - I bought the rims from Hoye but had to source my tires locally because at the time Hoye could not get tires. I tend to keep my tractor in 4wd at all times due to my property - hills, grass, and snow. However, I do agree, its hard to shift from 2wd to 4wd and I have to put the gear in neutral and the powershift in neutral to do it.

    Original Rice Tires -
    Front 6-14
    Rear - 9-24
    Turf Tires - Carlisle R-3's
    Front 24 X 8.50 x 14
    Rear 13.6-16
    Thanks,

    Scotty Dive
    Yanmar YM2020D "Git er Done Too"
    Pictures! http://s139.photobucket.com/albums/q...t=dfc00199.pbw
    Yanmar Tractor Database - Click Link, then click file and download the excel file.: https://drive.google.com/file/d/0BxR...it?usp=sharing

  6. #6
    Super Member California's Avatar
    Join Date
    Jan 2004
    Posts
    5,399
    Location
    Sonoma County
    Tractor
    Yanmar YM240, YM186D, and another YM186D

    Default Re: YM2020D new tires hard to release 4wd

    If it's really bound up - drive backward in a zig zag pattern while tugging on the lever. That's from an old Jeep owner's manual.

  7. #7
    Gold Member
    Join Date
    Mar 2005
    Posts
    254
    Location
    Talladega county, Sylacauga, AL
    Tractor
    Yanmar YM2020D Satoh Beaver III Yanmar 1500

    Default Re: YM2020D new tires hard to release 4wd

    Thanks. Several things I had not thought about. I did buy the same size tire from Hoye who said they were as close as one can get now that the original tires are no longer available. Only thing abou5t the R1 tires that are not as good as the rice tires is that in my heavy red clay soul the R1's load yp with mud and spin.

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