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  1. #11
    Platinum Member
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    Nov 2008
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    802
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    US Virgin Islands
    Tractor
    Jinma JM304

    Default Re: 284 jumping out of, and now stuck in gear

    Roll pins don't usually bend, they break - they're brittle because they're hard spring steel. Really bad juju to have whirling around in a case full of softer gears, eh? Get it out.

  2. #12
    Member
    Join Date
    Jul 2010
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    40
    Location
    Grants Pass, Oregon
    Tractor
    Jinma 284

    Default Re: 284 jumping out of, and now stuck in gear

    Appreciate the suggestions. Unfortunately, I already drained the Xmsn and the pin is nowhere to be found. I probed under the gears, where I couldn't see well, with a magnetic retriever and still no luck. Short of tearing the Xmsn apart, it appears I may have to take my chances.

  3. #13
    Silver Member erj's Avatar
    Join Date
    Mar 2008
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    205
    Location
    Buckley, WA

    Default Re: 284 jumping out of, and now stuck in gear

    Before you put it back together, I would suggest shifting through ALL of the gears and combinations in case it might be 'stuck'. I'd also run my fingers around all of the gears as much as possible.
    RonJ
    2006 Jinma 284, Coldwater FEL, JW03 Backhoe, 5' Box Blade

  4. #14
    Super Member greg_g's Avatar
    Join Date
    Dec 2003
    Posts
    6,028
    Location
    Western Kentucky
    Tractor
    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: 284 jumping out of, and now stuck in gear

    Quote Originally Posted by TheSheriff View Post
    Appreciate the suggestions. Unfortunately, I already drained the Xmsn and the pin is nowhere to be found. I probed under the gears, where I couldn't see well, with a magnetic retriever and still no luck. Short of tearing the Xmsn apart, it appears I may have to take my chances.
    The lowest fluid point is the transfer case, that's where you should have drained. In fact - if you haven't refilled yet - remove the transfer case from the transmission for a better look. With the fluid drained, it's a simple matter of disconnecting the back half of the driveshaft and unbolting the transfer case - which then drops straight down.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  5. #15
    Platinum Member
    Join Date
    Nov 2008
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    802
    Location
    US Virgin Islands
    Tractor
    Jinma JM304

    Default Re: 284 jumping out of, and now stuck in gear

    I'd also suggest draining the transmission/transfer case and then refilling with some kerosene or diesel fuel and then try again with the magnet - the broken/missing roll pin may have been held to one of the gears by the heavy gear oil and this should let it drop to the bottom. If no luck with that, then I'd again fill with diesel or kero and GENTLY run it through the gears a minute or two, preferrably using just the starter with the compression release pulled, rather than under power. Then check again for that pesky pin. Those things are just too hard to make me feel comfortable having it possibly in the gear train.

  6. #16
    Member
    Join Date
    Jul 2010
    Posts
    40
    Location
    Grants Pass, Oregon
    Tractor
    Jinma 284

    Default Re: 284 jumping out of, and now stuck in gear

    I have buttoned it back up, but I will drain it again and take another look this weekend.
    Thanks
    Brad

  7. #17
    Veteran Member Bob Rooks's Avatar
    Join Date
    Feb 2007
    Posts
    2,278
    Location
    Bothell & Silverdale, WA
    Tractor
    Yuchai Bulldozer

    Default Re: 284 jumping out of, and now stuck in gear

    Gears have zero tolerance for roll pins.
    Yuchai 306R dozer, Mustang 2040 skid steer, Mitsubishi MS035 Mini-Ex with four buckets and a rake, Trimble equipped 7' Dual Dozer with twin GCR-2 laser receivers, and a LiTW BH7600 back hoe (sold).

  8. #18
    New Member
    Join Date
    May 2010
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    17
    Location
    brighton co
    Tractor
    2008 nortrak 254

    Default Re: 284 jumping out of, and now stuck in gear

    Just a thought, if you cant find the roll pin (I would try very hard to find it) purchase a transmission pan magnet and stick it to the inside of your transmission. If the pin is moving around it wont take long and it will be stuck to the magnet (hopefully before it destroys the gears). Its also just a good practice on non synchro transmissions. Lots of very fine metal particles from the shifting of gears will find their way onto the magnet as well.
    Take Greg's advice, pull the transfer case box from the bottom of the transmission. Good chance that's where your pin ended up.

    Ditech--

  9. #19
    Member
    Join Date
    Jul 2010
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    40
    Location
    Grants Pass, Oregon
    Tractor
    Jinma 284

    Default Re: 284 jumping out of, and now stuck in gear

    Ditech, thanks for the advice... I will be taking another look in the morning.

    Regarding the transfer case, I did intend to explore Greg's suggestion, but when I look at my mental picture of the area under the gear shift, I'm a bit confused (Sorry, don't have the parts book in front of me). It appeared to me the only opening from that area forward was through a shaft bearing. Just wanting to confirm there is another opening through which a roll pin could pass and make to the TF case?

  10. #20
    Member
    Join Date
    Jul 2010
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    40
    Location
    Grants Pass, Oregon
    Tractor
    Jinma 284

    Default Re: 284 jumping out of, and now stuck in gear

    Well, I have this thing apart and based on Greg's considerable knowledge, I hesitate to say he's incorrect, but I'm not seeing the connection to the transfer case. The area called the "Drive Gearbox", page 32 in my manual, appears to be completely isolated fore and aft, with the exception of two shaft roller bearings on both ends. I know the roll pin could not pass through those bearings without catastrophic damage, and I ran the tractor for several hours after the problem developed (Though I didn't use 2nd or 3rd).

    The transfer case draws lube from the compartment in front of the Drive Gearbox, where the creeper lever is located. If I'm right, it doesn't help me find the pin, but it saves me from pulling the transfer case unnecessarily.

    Can't believe I can't find that bugger in such a small area!

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