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  1. #371
    New Member
    Join Date
    Aug 2012
    Posts
    18
    Location
    Boise, ID
    Tractor
    2005 JD L118

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Quote Originally Posted by joebob View Post
    Hi Guys;
    Look in my other posts for the method I used. Let me Know if you need further info.
    Cheers
    Joebob
    Hey Joebob. A couple of us have looked through your other posts, but still not clear on surfaces you machined. Attached is picture of K46 tranny. Could you load this into MS Paint on your computer, mark/highlight the surfaces of parts you machined, and post it for us?

    I'm especially wondering about the pump and motor. Those are the large cylindrical parts that look like "six shooter revolvers", having spring loaded pistons that ride in cylinder cavities like bullets in a revolver. Did you not see any scoring on piston exteriors or the walls of the cavities the pistons ride in? You didn't do any machining of these pistons or their cylinders? I'd think that if there was scoring on other surfaces, that scoring arose from impurities in the oil grinding away, and I'd think that would score piston cylinders too and cause leaking between pistons & their cylinder walls???


    -k46v-jpg

  2. #372
    New Member
    Join Date
    Aug 2012
    Posts
    3
    Location
    Pomfret, Connecticut
    Tractor
    JD X300

    Default Re: TuffTorq K46 Repair Guide with Pictures

    I posted this a couple days ago as a new thread...may not have been the smartest move but I am new to this type of form. While mowing with my 2007 JD X300 (actually when I was repositioning the tractor) last weekend I completely lost forward, reverse and parking brake. Not really confident that I had the same problem as others who went with the K46 rebuild, I gave it a shot anyway, following the instructions posted by lotsofgreengrass (thanks). I figured, what the heck, it seems to have working for almost everyone else who tried the rebuild, and it probably wouldn't be a complete waste of money either way.

    What was unique about my problem, compared to all others who attempted the rebuild, was that I lost all transaxle responsiveness immediately. I didn't notice a gradual loss of power...the unit was whiny and underpowered to begin with. My biggest reason to doubt that a rebuild would fix the issue is because of the immediate loss of F, R and brake and I could push the tractor with the brake engaged.

    I have a bad habit of replacing unneeded parts, to substitute for my lack of mechanical troubleshooting skills. I am into this for $180 already. Seeing that I have no brake, I have to assume the failure is within the gears, somewhere after the disk that engages the brake. I didn't see any excessive ware on the gears but you can hear the gears within the transaxle grinding (operating the unit on jacks, the wheels will turn until you apply a small amount of pressure. They are easily stopped and that's when you can hear the grinding.

    Any suggestions on what else may need to be replaced? Differential gear?

  3. #373
    New Member
    Join Date
    Aug 2012
    Posts
    2
    Location
    tulancingo hidalgo
    Tractor
    tractopodador crafman con motor kholes 26 hp

    Default Re: TuffTorq K46 Repair Guide with Pictures

    hi。。。 my name is jonathan i am from mexico I have a problem with the oil dipstick and I have not wanted to know which oil to use and how much to take
    thank you very much for the guide

  4. #374
    New Member
    Join Date
    Aug 2012
    Posts
    3
    Location
    Pomfret, Connecticut
    Tractor
    JD X300

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Update on my K46 issues: I had been reluctant to pull the gears completely apart thinking that any issues would be visible by turning the assembled gears. I did drop the transaxle again last night, this time disassembling differential gear down to the axle. All parts looked good (again only 177 hrs on this) UNTIL I got to the right side axle. Lo and behold, the inside teeth of the gear that fits onto the right side axle were rounded off as were the opposing teeth on the axle itself. This resulted in the symptoms I posed originally: immediate loss of F/R/Brake accompanied by grinding noise, transaxle would operate the wheels (machine on jacks - where it has been for the past two weeks) until a small amount of pressure is applied to the wheels - at which point the grinding would start again.

    Ordered
    AXLE SHAFT, RIGHT 31.37 ea
    DIFFERENTIAL GEAR KIT 25.72 ea
    SNAP RING (the one above the fan - ordered a few of them) .26 ea
    SEALING CAP (while I am at it) 2.42
    2nd day UPS Air (have to mow the jungle before it gets more out of control) 31.15

    Total just around $90. Having also replaced the motor, pump, filter and oil change, I am optimistic she'll be back in operation by the weekend. More to come...

  5. #375
    Bronze Member
    Join Date
    Nov 2002
    Posts
    54
    Location
    Manchester MI.
    Tractor
    Case 530CK

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Ida;
    I 'm not very computer literate, can't do paint. I have'nt even graduated to dummy status. The surface I'm talking about is on the block that the cylinders revolve against. I did'nt do anything w/ the pistons & bores, I did'nt notice anything wrong there, perhaps ther're not so critical. Hope this helps. Let me know.
    Cheers
    Joebob

  6. #376
    New Member
    Join Date
    Aug 2012
    Posts
    2
    Location
    tulancingo hidalgo
    Tractor
    tractopodador crafman con motor kholes 26 hp

    Default Re: TuffTorq K46 Repair Guide with Pictures

    JOEBOB hello I have a problem with my tractor because instead of moving forward and going backward instead of going forward going backwards but eh force reviewed some videos and I lack insurance or bolt that goes inside the module with the pistons not great if you could help me?

  7. #377
    Bronze Member
    Join Date
    Nov 2002
    Posts
    54
    Location
    Manchester MI.
    Tractor
    Case 530CK

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Keto; Dont understand what you're talking about. Can anyone take a piccie of the surface of the block that the motor & pump revolve against, if you understand it, & post it here?
    Cheers
    Joebob

  8. #378
    Bronze Member
    Join Date
    Nov 2002
    Posts
    54
    Location
    Manchester MI.
    Tractor
    Case 530CK

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Hey Rock;
    I had posted before about milling/grinding the block which worked beautifully for me, but guys are still buying unnecessary parts for hundreds, when a $25 repair & some labor worked fine, go figure!
    Cheers
    Joebob

  9. #379
    Silver Member wthompson's Avatar
    Join Date
    Jan 2012
    Posts
    157
    Location
    Southeast, GA
    Tractor
    John Deere 4600HST L100 L120

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Quote Originally Posted by ampsucker View Post
    forgot i was going to post up the exploded parts diagram and parts list that derrick send me.

    these are for the 46V hydro.
    Thanks!

  10. #380
    Member
    Join Date
    Dec 2011
    Posts
    39
    Location
    Northampton, Pa
    Tractor
    JD212, JD116h, JD L110, JD L130

    Default Re: TuffTorq K46 Repair Guide with Pictures

    Quote Originally Posted by LotsofGreenGrass View Post
    How did it go?
    Question for you guys, I just replaced the 3 afforementioned parts, had no problems, put it all back together and ran the tractor up nice grades for about 20 minutes without a glitch. Parked tractor (L130) for about fifteen minutes to clean up tools and hopped back on it. About two minutes later it slowed and then stopped! Very loud groaning, and it seems like its slipping and wanting to move. Belt is fine. Neutral lever in back seems to not have to definite points any longer. It just seems sloppy. Any ideas? Any info you could share would be greatly appreciated. Thanks, Steve

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