Deere 4100 joystick can't move left or right

[Thruxtonguy]

Folks:

This baffles me, so at the suggestion of Kennyd, I post this before the cognoscenti. Please help.

Low hour Deere 4100, well maintained with factory 54" deck and model 410 FEL.
Joystick moves out, and bucket falls with some curious down-curl at the end of travel.
Joystick moves in, and bucket lifts with some odd in-curl at the end of travel.
There is no available movement of the joystick left or right, no detent, no gate. I'll bend it if I push harder.

Linkage to SCV is lubed and spools move (always one spool goes in and the other goes out, for any forward/backward movement)
Dust cover reveals grease and no signs of moisture, springs seem ok.

With hoses switched, there is the opposite result: curl with some lift at the end of travel.

I had a 4100 for five years, and I loved it when it was stolen. I know how it should work, and this isn't it.

Joystick is not locked with factory pin-lock under the seat. With no linkages, joystick is free to move in all directions.
Turnbuckle length is factory correct at 3.484" or as close as I can measure.

In all SCVs I've ever been around, one valve moves for one function, and the other valve moves for a different function: this time, one always moves in and the other out, varying lengths, for any stick motion.

I'd appreciate any suggestions, gents.

Thruxtonguy
not the fastest, but always the steadiest

 

[Thruxtonguy]

Re: Deere 4100 joystick can't move left or right: got 'er fixed!!

Here is my analogy to what I found and how I fixed it.

Imagine an old Chevy six cylinder rocker rack under the valve cover. Now, tack weld each rocker to the shaft, and then pull one rocker at the end of the shaft. What happens to all the others? They move, too.

On the 4100 rack, there are only two rockers, but they were so fully corroded to the pin, they were essentially welded. I tried a heat gun after my wife figured it out (when moving the pin itself moved both rockers and spools).
The heat gun was ineffective, so I tried propane: too big of a flame. So I got the OA and made a tiny pinpoint flame and heated the rocker A and then B. Added Kroil. Then vice grips. FINALLY got some independent movement. More wiggling and an hour later I got them going.

All is well.

I ASSUMED that free turnbuckles means a free shaft. Wrong assumption

Folks:

This baffles me, so at the suggestion of Kennyd, I post this before the cognoscenti. Please help.

Low hour Deere 4100, well maintained with factory 54" deck and model 410 FEL.
Joystick moves out, and bucket falls with some curious down-curl at the end of travel.
Joystick moves in, and bucket lifts with some odd in-curl at the end of travel.
There is no available movement of the joystick left or right, no detent, no gate. I'll bend it if I push harder.

Linkage to SCV is lubed and spools move (always one spool goes in and the other goes out, for any forward/backward movement)
Dust cover reveals grease and no signs of moisture, springs seem ok.

With hoses switched, there is the opposite result: curl with some lift at the end of travel.

I had a 4100 for five years, and I loved it when it was stolen. I know how it should work, and this isn't it.

Joystick is not locked with factory pin-lock under the seat. With no linkages, joystick is free to move in all directions.
Turnbuckle length is factory correct at 3.484" or as close as I can measure.

In all SCVs I've ever been around, one valve moves for one function, and the other valve moves for a different function: this time, one always moves in and the other out, varying lengths, for any stick motion.

I'd appreciate any suggestions, gents.

Thruxtonguy
not the fastest, but always the steadiest