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I have a Jinma 284 that I've used for a few years now on my small farm. It has been a workhorse.
Well, I think the time has come to work on my clutch. I noticed it starting to go awhile ago but then forgot after my hydraulic pump went out and the tractor sat for most of the winter until I could replace it. I was so proud of myself (don't have a lot of mechanical/engine repair experience) after replacing the hydraulic pump but then as soon as I started driving it I noticed the engine revving but not moving when I let out the clutch pedal. Today I was able to move a few buckets of dirt but started barely making it up small inclines. the engine would rev and then slowly start to move with the clutch pedal completely released. I barely made to it's parking space next to my shop after the last bucket.
I have done a couple of easy jobs (replaced the starter and hydraulic pump) but nothing as involved as repairing a tractor clutch.
I've been scouring the web for info on replacing the clutch plates. I've read about splitting the tractor to get to the clutch assembly and about the various components. I think I would like to give it a shot vs. paying the thousands I was quoted by a mechanic.
So I need advice. Splitting the tractor, replacing the plates, throwout bearing, gaskets, anything else I should think about replacing? Any surprises you may know of I might encounter? Things that I might think are necessary to take apart but aren't when I split the tractor. Tips for getting the two pieces of tractor back together. Any idiosyncrasies with a two stage clutch and 4WD?
The majority of my tractor work has been done for the season so I have some time to plan, order parts, stock up on metric tools, and then start the job. Should I order parts after everything is taken apart?
Thanks to all for any help you can offer. The CTOA has been good to me over these last few years.
Sincerely,
lobbster
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Splittng the tractor to replace the clutch is a major task if you are not mechanical,the other thing you need to think about is if you cannot get it back together then you have to figure out how to get 2-halfs of a tractor on a trailer to take to the mechanic.
The labor to replace a clutch assembly should be around $ 800.00-900.00 plus the parts. We just did one last week on a 284 and for the clutch replacement and a service,fuel filter replacement,ect the invoice was about $ 1,400.00
If you would have brought in 2-tractor halfs and a box of bolts it would have been alot more
Tommy
Affordable Tractor Sales
“Your Jinma Parts Superstore”
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I split my JM304 to replace a bad gasket and rear main seal, though the clutch was still fine. If you have a flat smooth place to work you can do it, it just means taking a lot of care to block things up level and use a digital camera to record everything in place and the sequence of removal so you can put it back together. Mos to fit is straightforward wrench turning and wire disconnecting/reconnecting, though there are a few things that can get sticky unless you have some guidance. I got the guidance from the guys on a forum and from Tommy at Affordable and Ronald at RanchHand Supply, and it went fine. I actually did it single-handed. If you care to read about it, you can here.
If you replace the clutch, you should also do the throwout bearing, the roll pin(s) that hold the release fork, all gaskets and have the flywheel faced or replaced if it is really too bad to reface. You should probably do the rear main seal as long as you're there and anything else that looks in any way suspect. The clutch needs to be adjusted after installation and the directions are shown several places in forums.
The hardest part for me, doing it myself, was getting the loader off safely. Once I had the beats off and secured the rest was straightforward. I had it all done in a weekend, exclusive of waiting for parts.
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Thanks for the suggestion Tommy, but I don't have the $1400 to $2000 right now. And, as I've heard and learned, I can't become a successful farmer unless I learn how to do the majority of repairs myself.
And thanks for the response Rich. I'll definitely use the digital camera (great suggestion!). I've seen a couple of ways to keep the two tractor halves lined up and a way to roll one away and then back.
I have found a reliable mobile tractor mechanic who I've come to trust. I could always pay him for his time if I need someone to come out to the farm if I get stuck on something.
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I 'm glad you do have somebody you can call if you need them,hopefully it will go smooth for you.If we can help you with the parts let me know
Tommy
Affordable Tractor Sales Co
“Your Jinma Parts Superstore”
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I had a slipping clutch on my 2005 Jinma 354 after letting someone use it w/o me supervising (not so smart). I thought I was in for the big job you described above. I just adjusted it using the set screw attached to the clutch pedal arm and damned if it didn't work again. I don't have may hrs on the tractor and I guess there is enough clutch left to allow for adjustment. I would advise to try that first before you split the tractor.
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