Jinma 284

[greg_g]

I did notice the oil gauge was showing about 20lbs at idle and 45-50lbs when I reved it up which concerns me. I don't put much faith in the cheap gauges to start with but do want to get an accurate oil pressure reading.

Unless the original owner swapped out the gauge, those are not "lbs" demarcations. Factory gauges are marked in MPa (MegaPascals). The conversion factor is roughly 145 PSI per MPa. Look closely at the gauge face to see if there's a decimal point in front of those numbers. If yes, what you're seeing is actually 0.1 to 0.6 MPa - the metric equivalent of 14.5 to 87 PSI. My tractors idle at about 600 rpm, at which point the oil pressure can be as low as 0.05 MPa (at temperature). Normal operating pressure is typically around 0.3 MPa.

Those pressures you listed - were they noted on a cold engine or during normal operation?

//greg//

 

[carpenter383]

If it got hot enough to loose power and stop running I'd change the oil right away.

 

[Kernopelli]

I cleaned the radiator...didn't appear to be too clogged with seed, chaff etc. but haven't had any more issues with overheating...not even certain that was the problem since it never boiled over. I would like to move the battery for more air flow...anyone done this and if so where did they relocate it? I would also like to change the filters soon, they've been changed at least once in its life because they are dated w/ hrs on them but appear to be OEM and was hoping someone could tell me the NAPA, Wix etc equivalents of fuel and oil filters.

I have to say, I really like this little tractor, some of the parts are a little cheap, and some of the steel seems a little soft but it is a torquey machine, smooth running and just feels substantial and heavy compared to the other tractors I've owned of similar size. Need to sort out the brakes and a few other odds and ends. My middle son won't stay off it. That tractor has motivated him to get more work done in the last few days than he's done in a month! I may just keep this rig and build another FEL and put on it. Heck, my wife even put a picture of her on it, on her "Facebook" page.

 

[greg_g]

I had a pair of 25 hp Jinmas years ago, and had the same problem with crap collecting behind the OE battery. They didn't last long anyway. But rather than relocate them, I just bought lower profile batteries (look at the Group 49 or Group 93 at any auto parts store).

Unfortunately I didn't keep the file that had all the aftermarket crossover numbers. But they're here in the forum archives. You just need the site search engine and a little patience (or another Jinma owner who still has the crossover list).

//greg//

 

[erj]

This is what I use on my 284 with the 385 engine.
RonJ

 

[jswisc]

I fabricated a frame extension and relocated my battery just below the front fiberglass. While brushcutting the temp remains constant, regardless of load.

 

[Kernopelli]

Thanks for all the info!

 

[Kernopelli]

I fabricated a frame extension and relocated my battery just below the front fiberglass. While brushcutting the temp remains constant, regardless of load.

Hey, I was wondering if you could post a pic of th battery relocation? I have a few ideas in mind for mine but so far haven't built anything. Would like to see how you did yours.
Thanks.

 

[jswisc]

I'll take some pix of the new battery location today or tomorrow.

 

[Affordable]

The LE style battery box mounts low below the radiator, you may want to take a look at it,it will bolt on you will still have to make a few modifications depending on your hood,here is a pic. I'm currently out but have more due in about 2-3 weeks


Tommy
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