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sptiger

K46 Tranny Question

19 years ago

I have another thread where I told of my problems with my transmission on my JD L120 mower, and I was told that I could change the fluid by removing the transmission from the mower. Taking the tranny off the mower was a breeze. I also found what is probably the cause of my problems, some kind of black rubber seal is cracked allowing the oil to run out. It's round, about 1 1/2" inches in diameter and partially obscured by the fan. Anyway, the latest problem is that there is a plug like I've never seen preventing me from getting the oil out. It had what looked like a filler cap, but when I pulled it off there was a weird looking plug underneath. It also has a little vent hole in it about 1mm in diameter. Is this where the unit was factory sealed and air bled?

I have a pic, but haven't been successful in trying to post it.

Comments (9)

  • 19 years ago

    Click on the link below for an easy DIY method for posting pics.

    Here is a link that might be useful: wally2qsworkseverytimemethod2postpics

  • 19 years ago

    Thanks for the link mownie. I have an imageshack account, but Photobucket is blocked here. I've posted pics on other forums before, but I am new to this one. Also, none of the links to my pic on imageshack are HTML.

  • 19 years ago

    You can go to Tuff Torq's web site and take a look at the diagram for your tranny. I think the part you are talking about is the tranny vent, but on the K46 it may also be the oil filler hole as well. My K51 has this same plug, but it is separate from another big cap where the oil goes in. When I emailed Tuff Torq they sent me a quick reply (next day) which included instructions and pictures on how to change the oil on my unit. They also confirmed it was OK to use synthetic oil as a replacement. The recommended oil weight for my tranny was 5w50. Mobil1 is not available in this weight, but Castrol Syntech is and that is what I used.

    http://www.tufftorqservices.com/cgi-bin/tts.storefront

  • 19 years ago

    i meant to inform you of that in the other thread. the second rubber plug under the cap comes out as well. i used a pocket knife to GENTLY pry around it and pop it up a little at a time. don't rip it, just a little leverage to work each side up.

  • 19 years ago

    What part of MS you in? i am in Greenville.

  • 19 years ago

    Hey davidandkasie, I am in Batesville. I haven't logged on since I took the tranny off. I found the parts I needed on Tuff Torq's website last week, ordered the replacement seals, and got them yesterday afternoon. Got some oil for the tranny, put on the new seals, and got everything back together with no problems. Now my problem has gone from bad to worse. Now the mower will hardly move at all, and it sounds like there's rocks in the transmission. I really didn't sleep well at all last night. :(

  • 19 years ago

    I don't know about the rock sounds, but as far as hardly moving, did you get all the air out of the tranny. You have to put the rear end up on blocks and go from forward to reverse and repeat until all the air is purged, it can take 10-15 minutes before all the air gets out.

  • 19 years ago

    If you changed the oil in the tranny, you probably didn't bleed the air out of it. Here is a procedure:

    1. Jack up the tractor on jack stands so the rear wheels can spin freely, and the tractor is secure.
    2. Start engine and operate at low idle
    3. With either a weight or a person in the seat, repeat opening and closing the tow release valve (wheel release lever ), while depresing fwd and rev. pedals.
    4. Once wheels run at normal speed, increase engine speed
    5. Continue by placing tractor on the ground, and doing panic starts and stops at full throttle - until tractor gives proper start/stop response.
    6. Recheck oil level and top-off if necessary.

  • 19 years ago

    Thanks for the info guys. I was hoping it had something to do with bleeding the air out because I knew there was nothing that I connected wrong or failed to re-connect. I am going to get right to work on it as soon as I get home.

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