Amadas 9980 - Using Four-Wheel Drive

9980 Self-Propelled Peanut Combine Transportation
Using Four-Wheel Drive
The four-wheel drive switch controls the four-
wheel drive system. The indicator light
comes on when
the switch is pressed and
four-wheel drive is activated.
It is normal for front wheels to lose traction
and spin out before the rear wheels in most
conditions. In extremely muddy conditions, it
may be necessary to apply both brakes
momentarily to increase hydrostatic pressure
to the 4WD motors.
The four-wheel drive is a two-
speed system
as follows:
•
High speed, low torque (rabbit switch),
which reduces the combine speed initially
•
Low speed, high torque (turtle switch),
which reduces
the combine speed even
further.
CAUTION
Ground speed decreases when 4WD is
engaged and increases when 4WD is
disengaged.
IMPORTANT! To prevent damage to the
hydrostatic system, do NOT switch the
4WD on or off while driving in third gear
(road gear) at high speed. The hydrostatic
lever must be no higher than number 4
when you shift 4WD on or off. If you are
driving the combine in conditions which
cause high pressures in the hydrostatic
system and the combine slows down or
stops, move the hydrostatic lever to neutral
and shift to a lower gear.
Switch
Indicator
MAN141 09/04/15 189