Transportation 9960 Self-Propelled Peanut Combine
114 06/03/05 MAN091
Using the Four-Wheel Drive
It is not necessary to engage the four-wheel
drive except for additional traction in muddy
conditions.
Remember the following when using four-
wheel drive:
• It is NORMAL for front wheels to lose
traction and spin before the rear wheels
in most conditions. When this occurs,
shift the transmission from first gear to
second gear.
• In very muddy conditions, it may be
necessary to apply both brakes
momentarily to increase hydrostatic
pressure to the four-wheel drive motors.
• If rear wheels are spinning excessively,
shift from second gear to first gear.
• To prevent damage to the hydrostatic
system, do NOT switch four-wheel drive
on or off while driving the combine in
third gear (road gear) at maximum
speed.
• In third gear, the hydrostatic control
lever should be moved below number
“4” on the decal before switching four-
wheel drive on or off.
• Turn four-wheel drive off before going
down a steep grade.
• Driving the combine in heavy load
conditions that cause the combine to
slow down or stop can cause high
pressure in the hydrostatic system.
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