Results 1 to 10 of 10
  1. #1
    New Member
    Join Date
    Jan 2013
    Posts
    11
    Location
    Battle Creek, MI
    Tractor
    Yanmar YM336D

    Default Yanmar YM336D Popping out of 4th gear on Powershift

    Is there something to inspect or adjust that will stop the tractor from popping out of gear when trying to use the 4th gear range? It does not do this in range gears 1-3. It seems like its not fully shifting into 4th. I can use 1st gear on the powershift with keeping slight pressure on the range shifter. When trying to use third its really trying to kick it out of gear. Any help or suggestions would be greatly appreciated.

    Jim

  2. #2
    Bronze Member
    Join Date
    Jul 2005
    Posts
    65
    Location
    Honesdale, PA
    Tractor
    YM336D

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    Most likely you need to shim the shift shaft. All the ones I have seen have a loose shaft that partly slides with the shift fork. Put some shims over the end of the shaft so it can't slide, allowing the fork to fully engage in the detent.

  3. #3
    New Member
    Join Date
    Jan 2013
    Posts
    11
    Location
    Battle Creek, MI
    Tractor
    Yanmar YM336D

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    Thanks for the quick response. Can you remove the range shift lever from the top and put the shims in from there? I saw springs and ball bearings and got scared! Can you walk me through where the shims go? I really appreciate the help.

    -ym336d-range-shift-jpg
    Last edited by jsdepottey; 01-28-2013 at 12:16 PM.

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

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    Excessive play in the shift tower (ball,bushing,pin,shift shafts if applicable etc) can cause short throw also a bent lower shifter section under the pin (unlikely) could also. If there is up and down or twisting movement in the shift handle that would be my first place to check. It could be more serious but the shift tower assembly is my guess. 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
    New Member
    Join Date
    Jan 2013
    Posts
    11
    Location
    Battle Creek, MI
    Tractor
    Yanmar YM336D

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    Quote Originally Posted by Car Doc View Post
    Excessive play in the shift tower (ball,bushing,pin,shift shafts if applicable etc) can cause short throw also a bent lower shifter section under the pin (unlikely) could also. If there is up and down or twisting movement in the shift handle that would be my first place to check. It could be more serious but the shift tower assembly is my guess. hth
    Thanks for the advice. I will check the up/down and twist free play when I get home. Can I open the cover where the shift range shaft connects and inspect there without letting springs and ball bearings loose?

  6. #6
    Elite Member Car Doc's Avatar
    Join Date
    Mar 2009
    Posts
    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    I believe you can. I have a similar transmission and never had the top off but the 4 little bolts at the base of the shifter handle would be where I would start make sure its in neutral to simplify re installation. I just checked mine and I have absolutely no up/down/twist in mine and it works ok.

    So just a heads up if yours is tight also you may have to go a bit deeper and take the cover off under the shifter which I cant advise you on that (at this moment anyway) because of the creep lever. I have no idea w/o researching it how it engages its shift fork etc down below so proceed with caution there. Should be no big deal but knowing something before hand is way better than learning after there is a question.
    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."

  7. #7
    Platinum Member
    Join Date
    Oct 2002
    Posts
    725
    Location
    Pomfret,Connecticut
    Tractor
    yanmar 336d w ldr,C,Cub,many attachments

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    does the low gear lock out have any effect on 4th gear ? mine will act as the one described,but not always and it just feels like it not going in all the way,all the othrers are a nice easy shift,not loose or worn at all

  8. #8
    New Member
    Join Date
    Jan 2013
    Posts
    11
    Location
    Battle Creek, MI
    Tractor
    Yanmar YM336D

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    Quote Originally Posted by grainger12002 View Post
    does the low gear lock out have any effect on 4th gear ? mine will act as the one described,but not always and it just feels like it not going in all the way,all the othrers are a nice easy shift,not loose or worn at all
    Not sure what the low gear lock out is, I just got the tractor. Is that the little rotating knob at the back of the shift assembly? I can't get mine to rotate. The shift is definitely not smooth and easy all the time. Sometimes I need to shift into other ranges before I can select the one I want.

    Car Doc, I do have play up/down and twist. Looks simple enough to take the cover off but then what?

    Gjamtrac, what part do you add shims to?

    Thanks again for the help.

  9. #9
    Elite Member Car Doc's Avatar
    Join Date
    Mar 2009
    Posts
    3,246
    Location
    Kansas
    Tractor
    YM3810D Yanmar

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    Quote Originally Posted by jsdepottey View Post

    Car Doc, I do have play up/down and twist. Looks simple enough to take the cover off but then what?

    Gjamtrac, what part do you add shims to?

    Thanks again for the help.
    Replacement or repair of worn parts at that point. How much play depends on how bad the shifter throw is affected thats the part I can not advise you on from here. But studying the geometry of the mechanism should explain my train of thought on the problem I hope.

    I am curious about the shifter shaft shimming procedure also he apparently has seen this so I may be way off in left field?
    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."

  10. #10
    Bronze Member
    Join Date
    Jul 2005
    Posts
    65
    Location
    Honesdale, PA
    Tractor
    YM336D

    Default Re: Yanmar YM336D Popping out of 4th gear on Powershift

    The ends of the shift shaft are smaller than the rest of the shaft, put 1/4" or 5/16" I.D. shims onto the rear end of the shaft to push the shaft forward, or you can use thin flat washers.

Similar Threads

  1. YM336D Powershift
    By jdoug in forum Yanmar
    Replies: 12
    Last Post: 08-15-2014, 01:05 PM
  2. Replies: 3
    Last Post: 03-27-2012, 10:37 AM
  3. Popping out of gear
    By 8ball3290 in forum Yanmar
    Replies: 76
    Last Post: 03-12-2012, 07:45 AM
  4. Yanmar powershift
    By Gary Fowler in forum Owning/Operating
    Replies: 2
    Last Post: 06-25-2008, 03:36 PM
  5. Powershift or gear drive?
    By Legdoc in forum Kubota Buying/Pricing
    Replies: 3
    Last Post: 03-29-2008, 05:46 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.