KB21 Service Manual Pub 09-14
43
sSection 30
Hydraulic Power to Motor
The rotation of the cutting blades is accomplished through the use of hydraulic power. Power to drive the
pump is typically taken from the tractor engine pulley, or if this is not possible, it is taken from the tractor
PTO turning at 540 RPM and stepped up to 2160 RPM with the use of a 4:1 speed increaser.
Note: Use of a rear mounted PTO driven pump requires the pump to be set up to operate in the reverse
rotation.
hose to port M2 on the motor control valve. The oil exits the valve through port T through return line to
. See the motor control valve section for
detailed explanation of the valve operation. A non-adjustable pressure relief valve located on the motor
control valve block and set at 3000 PSI protects the motor circuit.
Gear Motor and Tandem Gear Pump Operation
The Terrain King’s hydraulic system is powered by the tractor and produces the desired hydraulic func-
to the engine speed.
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