1020 power steering

bought a 1020 diesel with 3200 hrs. Was a chore tractor on a cattle/hay farm. All systems go with the exception of steering side-
to-side play. Turn wheel to the right and the shaft screws out about 316 inch before turning the wheels. Conversely, to the left
it screws back down before turning the wheels. Steers easily with no chatter and no leaks, just has about 60 degrees of play.
Parts page shows an "adjuster" AT19858. Tech manual states use of JDH-41-2 Steering Adjuster tool. No picture, but it is probably
a spanner wrench of sorts. Should this adjustment take the play out of the steering? What does one use instead of a JDH-41-2?

By the way... needed a #2 injector line. Mother Deere had to make one up. I got it, bag tag AT 18099, but inside was a #1 line AT
18065. Drat. Multiple wraps of teflon tape stopped the leak... for now. Hope Deere finds a #2 line soon.
 

Some steering wheel upward/downward movement is normal & I think 3/16'' is within normal range. Pop rearward round inspection cover from clutch housing to be sure bolt that holds steering arm on steering valve is tight. Another place to look for slack is in the center of frt axle for loose bellcrank bushings or needle brgs. Also check ball joints for wear on each end of draglink.
 
The upward-downward movement is not pulling up or down on the steering wheel, but is a screwing motion as I turn the wheel.
It screws up 3-16 then turns right, then screws down 3-16 (60 degrees) then turns left.
 
my 1520 does the same thing with no hyd power, adjusted it and would not work. ended up being the bell crank and a rod end was bad.
 

Steering shaft moving up & down a small amt is what activates the LH/RH control valves in the power steering housing. Have you checked for any other loose/worn steering components?
 

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