Can't Calibrate F1, F2, And R 8670

[FOMOCO Farmer]

I'm attempting to calibrate the clutch in this 8670. Calibration review are as follows: F1-74, F2-24, R-27. When I start the calibration procedure and move the shift lever to forward and then the left, the
tractor jumps so bad that the F is shown. I have the parking brake on, brakes held, and the wheels blocked. I cannot keep it from jumping. Any ideas?
Also, I decided to see if the remotes worked. I hooked a disc to the remotes and it would not move the cylinder either way. Flow control was tried in many positions. Any and all help is greatly appreciated!

 

[Bern]

Something very odd about what's going on here, because the transmission should not move when you're doing a calibration. The fact that it does tells me that something is not right with a clutch pack inside, as much as I hate to tell you this. Either that or a modulation solenoid is not working smoothly. A pressure gauge and a voltmeter (or better yet a scope) would confirm that.

Another thing you could do is swap solenoids to see if the problem changes to R or F2. I think they're all the same, but check the parts catalog to be sure.

The fact that your calibration numbers are so far off is concerning as well.

 

[FOMOCO Farmer]

I have a 8770 that I can borrow a solenoid off of. Still learning about these tractors!