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Jinma 254 General Questions

Forum Forums Tractor Operation And Maintenance Jinma 254 General Questions

This topic contains 31 replies, has 5 voices, and was last updated by  DavidPrivett 6 days, 4 hours ago.

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  • #47254

    Matthew Prestine
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    I just purchased a 2007 Jinma 254 tractor, never owned a tractor so I am a total noob.  The prior (original) owner had no manuals or anything for the tractor so I am in the dark.  Oddly enough the owner only knew what a few of the controls where for so I have questions.  I have downloaded all the manuals that I could find on the net and where it has helped I still have questions.  So here we go.

    It does not appear to have the crawler hi/lo lever, is this abnormal?

    It does not appear to have a decompression lever, is this abnormal?  Do I really need it?

    There is little information on the shifting of these tractors and in my ignorance it is not apparent if I can shift while moving or just pre-select the gear before moving.  In other words do these shift like a car. 1-3 as speed increases?

    Is there a search feature for this forum?

    Matt

     

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47255

    DavidPrivett
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    I think all farm tractors have a hi – low transfer case , Some tractors do not use decompression to help start the engine and the shift pattern can be anything . Is the tractor equipped with a shuttle shift? That is where you chose a gear for your ground speed and the shuttle changes from forward to reverse.

  • #47256

    Matthew Prestine
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    Thanks for the response.  I should have been more clear.  There is a HI/LO gear selection but in my research it seems that these tractors also have what they call a crawler and this lever is a HI/LO selection also.  On mine with the HI/LO I have 6 speeds, otherwise they have 12 with the combinations of the two HI/LO selectors.  I dont think it is a shuttle shift, it is a clutch and there is a forward/neutral/reverse lever selector on the column across from the throttle lever.  I select HI/LO then 1-3 gear and use the clutch to engage the engine.

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47257

    Piper184
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    My 2007 (built in 2006) has the creeper (or crawler) hi/lo that yours does not. That may be a difference between the models or it may have been an option that was not built into your tractor. Not all farm tractors have transfer or hi/lo speed selectors. Some do, some don’t. My 284 has 12 forward and 4 reverse speeds using the two transfer cases in various combinations. However you have the “shuttle shift” and I don’t. For doing loader work it is a great benefit because you can flip back and forth without shifting the transmission. I wish my 284 had that feature when moving snow.

    As for shifting gears. Most tractors with manual transmissions don’t have a synchronous gear set, so you don’t up-shift on the move. You come to a compete stop before shifting to avoid grinding the gears.

    Decompression levers are nice to have but not a complete necessity. Do you have the two or three cylinder engine?

  • #47258

    Matthew Prestine
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    So they call the forward/neutral/reverse a “shuttle shift”?  Thought that was something completely different, now I am learning.  Then I guess I have shuttle shift, it is nice to swap quickly from forward to reverse.  Havent done any loader work yet but I can see how it is going to speed that up.  Any things that are a watcha for shuttle shifts?  Down sides?

    I have the yangdong Y385 3 cylinder engine in this tractor.  It seem pretty good.  The prior owner did mention a few things that were done but I plan to start another thread to deal with those questions.

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47259

    Piper184
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    I am a little surprised you don’t have a decompression lever. Look on the back of the rocker cover to see if you have the mechanism circled in yellow.

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  • #47261

    Matthew Prestine
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    I have the decompression assembly on the engine but there is nothing on the tractor side that allows the mechanism to work or be used.  It doesnt look as if the prior owner took anything off so I can only assume that it was never supplied.  I think I could fab something up if it was needed but I dont know if it is.  Maybe in cold weather or for a safety shut down thing?

    Thanks for all the help, what engine is in your tractor?

     

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47262

    Piper184
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    I have the Y385 engine.

    Here is a picture of the decompression lever and one of where it goes towards the engine. Your may have been removed at some point and all you need is the parts. Speaking of parts, did you find a parts manual?

    I like the decompression feature for two reasons. If it has been more than a week since the tractor was used, I like to hold the fuel cutoff and the decompression at the same time and spin the engine until I get oil pressure built up and then for another 5 to 10 seconds. This acts as a pre-oil to minimize wear at startup.  Second, for really cold starts or weak battery conditions. If you use the decompression for the first couple of revolutions when you hit the starter it lets the crankshaft and flywheel get up to speed easier. Then when you drop the lever that inertia helps the starter motor against the compression stroke.

    I can take better pictures of it and scan the parts page if you would like.

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  • #47265

    Matthew Prestine
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    Thanks.  That thing looks brand new, are those older pictures?

    The only parts manual that I found was on johnstractor so I would like to get something better if there is something.  I did not receive that manuals from the prior owner.  I was able to find the Y85 engine manual, jinma 254 operation manual and some other operation manual on the net labeled MCE 2004.01.  If you could scan it that would be great.  They seem pretty proud of them on the US parts support sites.

    I am not familiar with these diesel engines and have some questions.  I bought this tractor with the premise that there might need to be some engine work.  I am a pretty good mechanic and it doesn’t bother me with the potential issues, even if I have to rebuild this engine. The prior owner said that he heard a knock noise and was the reason for selling it.  I have not heard anything out of the ordinary and it sounds like a loud diesel.  Is your engine pretty loud?  I do know that just prior to hearing this noise he replaced the injection pump, less than 10hrs ago, and had a hard time getting it timed in.  The pump timing still might not be as it should.  This doesn’t surprise me without the manuals or specs needed to do so properly.  I think I will pull the pan and check the bearings and see what they look like just for cheap insurance.  I have done research and it typically sounds like a fuel and injector problem that would cause this noise.  Again I hear nothing strange.  Maybe I will just tear the thing down as a winter project, worst case it only costs me a set of gaskets.

    Matt

     

     

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47266

    Piper184
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    Yeah, those are older pictures from way back when I put it together out of the crate. At 11 years and 600 hours it doesn’t look that nice any more.

    Mine is a little loud, but it is a diesel from China! I am still on the original battery although it is getting week this fall and the new one is in the shop. I have never had any battery go 11 years.

    Injector pumps have a couple of known issues. The seal between the pump crankcase and the lift pump likes to leak diesel into the crankcase and that dilutes the oil that is shared with the governor. They can also leak fuel from the injector pump pistons. Mine has done both. I just put in new oil when I change the engine oil which is usually somewhere between 50 and 100 hours.

    Here is the throttle parts for the 284. Apparently there were two different variations during the production run but the decompression is about the same for each. Your tractor may be exactly the same or something different entirely.

     

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  • #47268

    DavidPrivett
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    IF I REMEMBER CORRECTLY the decompression release was not furnished on some of these tractors with shuttle shift because of a linkage conflict( the thread was on the old site maybe two upgrades ago). Since you are the new owner I would retorque the head and reset the valves unless you can verify that it has been done before.

  • #47269

    Matthew Prestine
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    Now that you say it that could be the reason, on initial inspection there could be an issue with location but I would have to fab my assembly anyway so I will make some thing work.  Now that I fully understand the needs/uses of the decompression I think I will make something up.

    Since I dont know the history of this tractor so I plan to go over each area of maintenance with a fine tooth comb.  I can only accept that prior owner did lube type maintenance and nothing further.  I actually feel like taking the entire thing apart.  Maybe I just have to much time on my hands.  Winter is coming in Wisconsin though and that means time for long garage projects. I am very excited about this thing and it sure seems like a decent tractor.  The features are rich for the money.

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47270

    Matthew Prestine
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    I just looked back through the manuals that I was able to find on the net and it does say that the decompression was not supplied on the shuttle shift tractors.

    Matt

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47271

    Matthew Prestine
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    Jinma 200 Series documentation manuals

    https://drive.google.com/drive/folders/1HQLUWoCMaW06SKIFZIewqLYcYv6YydI0?usp=sharing

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47272

    Matthew Prestine
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    Jinma 200 Series Parts Data

    https://drive.google.com/drive/folders/18hLqEzF4JwOqSpg9UezFYQ7XG9UtXMFI?usp=sharing

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47273

    Matthew Prestine
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    Pictures of my tractor.

    https://drive.google.com/drive/folders/1Z631u3pIhxNE5qy7Qe1RoUYYlA6sLd4J?usp=sharing

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47274

    Matthew Prestine
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    I have also started a thread over here, I will keep both updated.

    http://www.tractorbynet.com/forums/chinese-tractors/387821-jinma-254xl-fel-shuttle-shift.html#post4909327

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47275

    Matthew Prestine
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    I have been reading about the hydraulic systems on these tractors.  What are the recommendations for adding a relief valve in case of a hose failure?

    Matt

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47276
    Bob Rooks
    Bob Rooks
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    I have been reading about the hydraulic systems on these tractors. What are the recommendations for adding a relief valve in case of a hose failure? Matt

    Welcome Matt.

    Unfortunately, a relief valve won’t help in case of a hose failure. There are double walled hoses for that, but their cost and available space makes them prohibitive for these tractors. A relief valve is already built into your valve body but a relief valve at the pump output could be beneficial if you have the Chinese quick connect fittings on your loader, which have been known to fail.

    My Mitsubishi excavator has sleeves over the hydraulic hoses in the cab and engine compartments, but all they would do is keep the oil from spraying all over.

    Yuchai dozer, Mustang skid steer, Mitsubishi mini-ex, Dual Dozer w/twin laser receivers, '50 Ford COE transit mixer.

  • #47277

    Matthew Prestine
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    Thanks for the welcome.

    Just to be sure my understanding is correct this is how I believe these systems are setup.  Not a hydraulic guy and my last experience was in a college class 25 years ago.  I cannot seem to find a schematic of the hydraulics system.  The pump on these tractors is driven by the engine.  The pump is supplied from a tank reservoir in the rear casing of the tractor and returned to that same reservoir.  After the pump the system piped into a valve and from this valve the components are fed.  The hoses from the valve need to “recirculate” the fluid or it may be bad juju to the pump as the pressure would build and have no place to go.  Hence if a hose failed it would be bad.

    A relief valve on output hose would at least save the pump?

    Am I far off on this one?

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47278

    DavidPrivett
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    Since you are pretty far up north , Maybe instead of the decompression lever a lower hose coolant heater should be looked at for a ease of starting method. They are pretty easy to do. And in my experience with it only needs a hour to do its job. If you know when you are going to use the tractor I have used a timer to activate so it is ready to go at the set time.

  • #47279

    Matthew Prestine
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    Funny that you mention this, I was just looking at these last night.  I plan to pick one up.

     

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    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47281

    Piper184
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    Here is a picture of the tank heater I installed. A lot simpler and more effective than a lower radiator hose one.

    Water comes out of the bottom of the block at the drain valve, goes through the heater and back into the top of the engine just below the thermostat. Circulation is all inside the block and not wasted in the radiator. This one is 1000 watts and heats a -20°F engine to melting snow in about 30 minutes.

    I made some changes after this was taken because the drain valve failed. Turned out the block was standard SAE pipe thread so the fix was easy.

     

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  • #47283

    Halifax
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    For your heater here is the topic where I put one on.

     

    http://www.ctoa.net/topic/canister-water-heater/

    God is Great, Beer is Good, and People are Crazy! '07 Jinma 254LE

  • #47284

    Matthew Prestine
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    Thanks, I like this idea for the engine heater.  Is that pump convection or circulation?

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47285

    Matthew Prestine
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    Well I pulled it apart last night. Some interesting results that I believe are due to poor assembly or crap in the oil. It was a pain in the ass to get pictures in there and they dont really show what I think they look like. I have seen worse and those engines have run a very long time without service but I think I will do a bearing replacement. It looks like I will split the tractor so I can also do the mains as I cannot get to them to inspect them at this point.

    What are your thought after looking at the pictures?

    https://drive.google.com/drive/folders/1-muEBoN_2eQPTCrwUxwKN3gz7QM8csl3?usp=sharing

     

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47286

    Piper184
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    Remember the fit and finish even when new is probably no where near what you would expect. Yet they run and survive. Kind of a testament to modern oils.

    How many hours on that engine? It will be interesting to compare the appearance of new bearings with the old. Also once you get new bearings you can check the clearance and get a better idea of how much wear there is. Do you have specs for new and service clearances?

    It doesn’t look all that bad in there and the tractor looks to be in good shape too.

  • #47287

    Matthew Prestine
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    The meter says 189hrs on it.  I am happy with the condition of the tractor, should last me for the rest of my life doing what I need it to.  I like to fix and take care of my things.  Probably break it apart this weekend and check out the rest.  It will also be good to check everything out like the clutch and other fasteners that aren’t accessible.

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47288

    DavidPrivett
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    Before I went crazy with taking it down where is your oil pressure readings if they are normal they are normal , unless you are bored I would not go down that splitting road. 189 hrs is not much even semi-neglected. The oil valleys in the head look clean enough in the pictures. At the most drop the front driveshaft and pull the oil pan. look in there for excess metals (there will be some with the poor block manufacturing clean up ) and pull and mic. main and a rod bearings . Good luck

  • #47289

    DavidPrivett
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    One thing I forgot to mention is do make sure that the clutch is adjusted correctly . I assume it is 2 stage. So make sure you use the right 2 stage settings.

  • #47290

    Matthew Prestine
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    David,

    I pulled the pan and checked the rod bearings.  Did you look at the pictures of them from two posts ago?  They have some damage to them and now I am concerned with the mains.  The oil pressure has always been @ 0.4Mpa or 60psi everytime I have run the tractor.

     

    Tractor: 2007 Jinma 254XL with FEL
    Engine: Y385
    Transmision: HI/LO 6 speed with shuttle shift

  • #47292

    DavidPrivett
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    no I overlooked them, yeah  to me it looks like bearings and a crank possibly. The scoring I can see by a dry start but the pitting makes me think corrosion. So maybe oil with a lot of water and ran and maybe let sit awhile before something was done with it. just a guess.

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