I have a nice Jinma tractor. The engine spun a rod 3 and it needs a new crank and possibly a rod and piston. It has be partially disassembled but all parts are there. It is 4x4 and these are good little tractors.
It is 25hp. Needs a new Y motor. Was going to be my project. Just need to get rid of it. No time to tinker with. Trying to find a solution without having to take the top of the gearbox off. Thanks for your time.
Jul 24, 2. That is interesting. My won't stay in the RPM setting it keeps popping out to neutral. Since I don't use the setting very often my solution is to use a bungee cord to hold the lever where I want it. I suspect that the sleeve that slides back and forth to choose the speed is not fully engaging the selected gear. This could be due to several things and I have not been inside the rear differential for troubleshooting. A bent fork or poor assembly of the parts may contribute to misalignment somewhere.
Another possibility is the detent at the control lever is too weak to hold it in the set position. I doubt that the clutch would have any effect on the gear selector. I hear you on the trying to avoid digging down to into the gearbox, it is quite a pain.
I did it once to diagnose a differential lock problem only to find out it was a loose bolt at the outside of the lever. There is what appears to be a thrust washer at the front end of the PTO shaft.
Perhaps it has too much or too little play and is effecting the meshing of the gears, but you we would have to take it apart to look at it. Hopefully someone who has dug into this issue before will chime in with advice. Jul 24, Thread Starter 3. Thanks Piper, thought I had it sorted by cleaning around the detent but it still wasn't engaging properly. Started cleaning the outside ready for delving in this weekend. For a reference, I ve attached an exploded view.
Jul 24, 4. Same set up as mine. I may be looking at the wrong thing. All nuts seem to be tightened and in place. This all external—correct? Probably a stupid question but…. A feeler gauge? Where do you get something that is 10mm or 25mm?
And where do I measure from? The inside of the nut or the end of the plate? Trying to figure that out. As to setting the gap on the clutch I would use a piece of hardwood like oak to what ever length you think you need and rip on table saw to the width you want and check with a good measuring device.
If I remember right some have had issues with the springs failing in the pressure plate, I hope this is not the issue, that is a tractor split.
Get your clearances and try adjusting the clutch first but I do not know if it will help I keep going back to you stating there was a lot of pedal travel, that would indicate the clutch was engaging the flywheel whereas if there was no pedal travel the clutch was slightly held off the flywheel.
My son who is an airline mechanic checked out my tractor today. He got the pedal adjusted as far as it could go and that closed the gap enough for the main pressure plate and the main clutch disc to meet tightly enough to actually move the tractor when we started the engine and put it in gear and let out the clutch. It actually moved which he said proved his observation that the main clutch disc assembly is fried, kaput, wobbly, good as dead.
He figures there is probably enough clutch to drive it or back it onto a trailer and get it to a mechanic to have it replaced. The Nortrac is maybe a model…I am the 3rd owner so I figure that this would fall on me sometime. So I am now looking for an garage or mechanic within the Louisville, KY area or Southern Indiana area who works on Chinese tractors and willing to do the clutch replacement. Any ideas would be appreciated.
I have a transport trailer so I can deliver. I am about equal distance to Indianapolis, Nashville, Cincinatti, St. Louis, Dayton, Ohio, Lexington, Ky. Surely there would be someone who could help. I want to thank David and Piper for their guidance and expertise in the knowledge and willingness to take the time to share it. I have learned a lot about me tractor. I am not sure about this but I think Northern Tool might be able to be a parts source for you, also price a flywheel just in case yours in heat checked badly and turning it wont get it corrected.
It is a shame that a simple adjustment was not done earlier by the other owners ,this could have been most likely avoided. Will take that advice. Thank you. I know that Circle G also offers a complete clutch assembly. I will compare prices and let you guys know. I get most of my parts from Circle G. I know that Northern Tool sells Nortracs so I am assuming that they may know of service centers close to where I live. I will let you know how things turned out.
This topic has 9 replies, 3 voices, and was last updated 3 months, 3 weeks ago by DavidPrivett.
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