JD 301A gear problem

[G8965M]

I asked about the main hyd pump meaning the unit inside the clutch/drive housing. With the tractor jacked up the wheels turn freely and I can shift freely through all the gears. That is why I was asking about the drive unit pump. If the gears was stuck will I be able to shift through gears and spin wheels freely?

 

[Dave M7040]

If the transmission was in two gears at the same time you would not be able to shift gears.
The two gears at the same time situation can be a momentary problem that occasionally will correct itself with movement of the shift lever or depressing the clutch and turning the engine off.
Dave M7040

 

[Tx Jim]

With the tractor jacked up the wheels turn freely and I can shift freely through all the gears. That is why I was asking about the drive unit pump. If the gears was stuck will I be able to shift through gears and spin wheels freely?

With trans engaged in a gear it should be impossible for both rear wheels to rotate at the same time in the same direction unless traction clutch pedal is depressed.

 

[G8965M]

This afternoon I removed the front end loader, before I tear it down I would like to pin point the problem. So I'm back in the transmission looking for obstruction or something out of place. Nothing yet!

 

[G8965M]

Looking at the technical manual for this tractor I see the power shaft goes through the transmission pump, I guess this is what I was calling the Internal hyd pump. Is it likely for this to lock up causing my problem?

 

[Tx Jim]

Does your 301A have a rear pto shaft? Trans pump is driven from shaft as you stated that would normally power the pto if no pto is on tractor so if trans pump was locked up this could be your problem.

 

[G8965M]

Yes , it has a live pto. I have checked it by engaging the lever and it turns

free when disengaged. Today I will try and turn main clutch output shaft while clutch disengaged. I may end up back in the rear gear housing again.
Thanks

 

[Tx Jim]

Does your tractor have continuous(dual stage clutch) or hyd ind pto(control lever between gearshift levers)??

 

[G8965M]

It has the duel stage clutch with pto lever on left side of trans.

 

[G8965M]

This morning I have removed the rock shaft housing and gear shifter cover. With tractor jacked up everything in transmission case seems to be free , but with the clutch disengage the power shaft will not rotate. I can get little movement with a pry bar , but isn't free.