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Bennie,
I have no experience with the shuttle shift transmissions, however reading your notes makes me think that you should be checking the internal workings of the transmission.
Below is an explanation of how the forward/reverse gears work on my Jinma 284. The information may be useful to you in inspecting your transmission.
Look for missing teeth on the gears, proper sliding, etc.
ronjin
Piper,
If you want to send me a PM with your Email address, I’ll send you a PDF file containing pictures and notes of the disassembly.
ronjin
Piper, have a picture of the 284 brakes, but can’t figure out how to post it for you.
ronjin
Hal,
I guess that I misunderstood this. I marked all topics as read, but I thought that any new posts on those topics would appear when I clicked on Subscriptions. But they don’t. Apparently when I marked all topics as read, the entire topic was marked and not just the existing posts on that topic.
Is that what you intended?
Thank you,
RonJ
ronjin
Jetster,
Sometimes when there have been some strange noises, etc on the transmission, there have been recommendations to overfill and run them for a period of time.
Do you think that might be worth trying on you front axle?
ronjin
Hal,
I have been leery about the Social Networks since they started, especially Facebook who has made some significant mistakes in sharing information (not realized by the participants). (In fact I am considering not moving to Win10 for any of my devices because Microsoft is presently leaving too many sharing options in an ‘open’ condition when releasing the software.)I realize that you are the owner of the site, but when I enter personal information and thoughts – I tend to think of it as “our” site (meaning all members).
How was the decision made to share info with Facebook? Are there other sites in a ‘sharing’ mode?
I would like to get a better understanding about what information from this site is being shared.
Thank you,
RonJronjin
Jetster,
Your problem presented a challenge. I have thought about it for some time and spent time with all of the exploded parts pictures I have. There may be nothing new here that you have not considered, but I have now gotten the thoughts out of my head.
Situation:
1. When driving in 4-wheel drive at a steady speed, the tractor starts to hobby horse due to the front drive binding up.
2. When driving in 4-wheel drive, if the clutch is depressed, the tractor is stopped by the front wheels with no actual tractor brakes applied.
3. When sitting on a downward incline with tractor in 4-wheel drive, the tractor will roll down the hill whether the clutch is In or Out and whether the engine is running or not. There is a feeling of ‘binding’ with each rotation of wheels, but tractor does not stop or slow down unless the actual tractor brakes are applied.Normal 4-wheel Drive Operation – forward motion
Clutch engaged:
Engine is driving the transmission and through the ‘claws’ the front drive shaft is engaged. The engine is forcing the forward gears of the transmission and therefore the front and rear axles to move the tractor in a forward direction.Clutch dis-engaged:
Engine is disconnected from transmission. Transmission is now potentially free-wheeling, but the tractor wheels are still in motion. The tractor wheels are now driving the transmission gears, allowing tractor to continue in direction it was traveling prior to clutch dis-engagement.Jetster’s 4-wheel Drive Operation
Clutch engaged:
Engine is driving the transmission and through the ‘claws’ the front drive shaft is engaged. The engine is forcing the forward gears of the transmission and therefore the front and rear axles to move the tractor in a forward direction. There is a ‘binding’ indicating that the front wheels do not want to do what the engine/transmission is forcing it to do.Clutch dis-engaged:
Engine is disconnected from transmission. Transmission is now potentially free-wheeling. The rear wheels are trying to drive the transmission gears in a forward direction. The front wheels do not want to move in a forward direction and cause the tractor to stop.RonJ opinion (prior to results of Situation 3 above):
There is something forward of the ‘claw’ on the front drive shaft that is binding. I recommend that the tractor not be driven since this must put significant strain on those 2 claws.I do not understand why when Jetster was coasting down the grade in 4-wheel drive, the tractor did not stop whenever the clutch was dis-engaged on the downhill run. Unless there was too much inertia from the rear wheels that over-rode the front axle resistance resulting in the feeling of binding rather than stopping.
What I would do:
Remove the front tires (to reduce the weight) and raise the front end.
Determine the rotation of the front drive shaft to move wheels for a forward motion.
Verify that the shaft coming out of the front of the Transfer Case is turning the right direction.
Rotate the front drive shaft in that direction to try to locate the ‘resisting’ parts.ronjin
Jetster,
Let me summarize since the info is now spread over several messages.1. When driving in 4-wheel drive at a steady speed, the tractor starts to hobby horse due to the front drive binding up.
2. When driving in 4-wheel drive, if the clutch is depressed, the tractor is stopped by the front wheels with no actual tractor brakes applied.
3. When sitting on a downward incline with tractor in 4-wheel drive, the tractor will roll down the hill whether the clutch is In or Out and whether the engine is running or not. It does not stop or slow down unless the actual tractor brakes are applied.
Are these all correct? If not, please clarify.
I have some thoughts but it will take me some time to describe them properly.
Also I would not use 4-wheel drive until the problem has been resolvedronjin