- This topic has 12 replies, 7 voices, and was last updated 9 years ago by
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Be sure your problem is the ring gear. I'd hate to split the tractor in half to find that isn't the problem. The tractor has to be separated between the engine and transmission, as the running gear is the frame. Inspect the clutch, throwout bearing and rear main seal while you're at it, and check the bolts on the plate at the rear of the engine and locktite them and re-seal the plate if needed. I could probably do the job faster than I could describe the details, but Rich had a great article somewhere, and there are others out there. Hopefully someone else here can point you to them.
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You must split the tractor remove the flywheel, you have to apply heat to the ring gear to remove and also reinstall the new one. If you are not sure you can take the flywheel and new ring gear to a mechanic shop or tractor repair shop they can install it for you. Most of the work is in splitting the tractor. We have all the parts you need as well as a splined clutch alignment tool which helps simplifies the reassembly
Tommy
Affordable Tractor Sales
“Your Jinma Parts Superstore”
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Update. I used a small air grinder and cleaned all the teeth on the ring gear. The tractor is 14 years old and the burs on the gear were not bad at all. I don't believe the ring gear is the problem. I am sure it is the starter. The starter works good on the bench. When I turn the key if it don't catch I let off and then try again. Sometimes it takes 3 or 4 try's. If I hold the key on it will spin for awhile and then catch
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when you have the starter out take a flashlight and look at the ring gear. If your tractor has a compression release wire it open and have someone else turn the crank to inspect whole ring gear. If no compression release you can pull glow plugs or injectors or be very very careful turning engine over with the fuel cut off (engine stop) fully engaged.
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there has been quite a few posts on the starters not getting enough amps to turn the starter up to the speed it needs to engage the ring gear. Some people am myself have added a starter relay in the start circuit . Take the small wire from the switch and use it to pull the relay. Take the large wire off the starter put it on the relay and add a strap from the relay to the starter, this worked very well for me. You depending on the relay might have to add a ground to it. This should help keep the switch in good shape as you are not running as many amps threw it.
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Are you barring the engine over by hand using a pry on the ring gear teeth? I have witnessed a case where the ring gear was cracked and just spun on the flywheel. It wasn't on a Chinese tractor, but it led to some head scratching. Watch the flywheel as you pry on the ring gear teeth.
Account deleted.
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I had the same issue (starter not engaging the flywheel) with my 2004 Jinma 284. The problem was more prevalent in the warm weather. I tried cleaning the starter and added a pilot relay but neither of those measures fixed the problem. Ultimately I bought an upgraded starter from Affordable Tractor and the problem has not reoccured since.
Jinma 284, logging winch, post hole digger, pallet forks, backhoe, back blade
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I have been working on this not to fast. I did get time to get to the bottom of it and though I better finish this link. What I found was I was getting a voltage drop at the starter. It turned out that the battery post on the neg. side where the wire is clamped was not a good tight fit. It was tight but was to large to completely compress the wire. I replaced it and all is good now.
For info when you are cranking the starter you should have 11.5 volts at the starter.
Thanks for the help and ideas :yahoo:
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