Amadas 9980 - Four Wheel Drive; Four-Wheel Drive; Steering

Troubleshooting 9980 Self-Propelled Peanut Combine
Four Wheel Drive
PROBLEM CAUSE CORRECTION
Machine will not move when
four wheel drive is engaged.
One or both rear wheels in
spin-out condition.
Increase hydrostatic pump
flow by moving multifunction
control handle forward.
Bad electrical control switch
on console.
See your AMADAS/John
Deere dealer.
Bad solenoid valve on control
valve.
See your AMADAS/John
Deere dealer.
Spool will not move in control
valve.
See your AMADAS/John
Deere dealer.
Machine will not move when
four-wheel drive is
disengaged.
Faulty line or connection
between main system and
rear wheel drive control valve.
Repair or replace parts as
needed.
Four-wheel drive will not
disengage.
Bad electrical control switch
on console.
See your AMADAS/John
Deere dealer.
Bad solenoid valve on control
valve.
See your AMADAS/John
Deere dealer.
Spool will not work in control
valve.
See your AMADAS/John
Deere dealer.
Rear wheels wander during
transport speeds.
Toe-in out of adjustment. Adjust toe-in.
Steering
PROBLEM CAUSE CORRECTION
Rear wheels wander during
transport speeds.
Toe-in out of adjustment. Adjust toe-in.
Steering arms do not contact
stops at full turns.
Steering cylinder out of
adjustment.
Adjust cylinder.
Hard steering.
Low oil level in engine
gearcase reservoir.
Add oil.
346 09/08/15 MAN141