Bearcat BC-2016/CRC, Instruction Manual

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52
2016
over time learn to judge how far you can spread
with a full chipper. Make your last pass or two as
well trim any parts you missed. Keep an eye on the
distributor as most cul-de-sac have enough room
for the distributor to start on the second half when
you have chipped halfway through the first. A good
distributor / chipper team is always moving. On
the second half keep your eye on the rollers, they
need their time and are just as important and part
of the team. A well practiced crew can finish a cul-
de-sac every 15-20 minutes.
Hydrostatic Drive
Transfer Case
Normal operation should be conducted in high range whenever possible.
This helps protect the hydrostatic drive motor from over-speeding when
chipping down hill. Use low range when excessive weight or inclines do
not permit the use of high range.
High and Low range in the transfer case is switched by an air cylinder
controlled by a switch on the dash. Just like a truck transmission, if there
is a load on the transfer case it might be difficult to shift. First shift to
neutral. Then use FWD or REV and throttle to move the machine back
and forth until neutral is achieved.
Low Lock
The full range of operation (high range) from 0 to 1675 FPM is controlled
by the range of displacement of the hydrostatic pump and motor. To
start from 0 FPM the pump is at minimal displacement and the motor
is at max displacement. As the pump increases displacement controlled
by the throttle pedal which in turn controls the EDC (Electronic
Displacement Control), the machine starts to move. As the pump
displacement continues to increase, the speed increases. At about
half of the max speed the pump has reached full displacement. At this
point the motor starts to decrease its displacement. As the motor’s
displacement continues to decrease, the speed will increase. Think of
the chain and sprockets of a ten speed bicycle. The front sprockets are
the pump, the rear sprockets the motor.
Low Lock turns off the displacement control of the motor. This holds the
motor in full displacement resulting in the max speed of 1100 FPM. This