Bearcat BC-502/CRC, Instruction Manual

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open spray nozzles or the travel speed of the asphalt
distributor. The pump is capable of pumping any bituminous material at
temperatures up to 400°F (204°C). The pump is easily accessible at the
rear of the truck. The standard pump is equipped with a conventional
stuffing box or packed seal. An optional version is available with a
Teflon lip seal that eliminates the need for periodic re-packing of the
stuffing box or packing. An intake screen is provided to protect the
pump impellers and chamber from foreign matter in the asphalt. A
second screen is used to keep particles from the spray valves and
nozzles. With exception of the BC-960, the asphalt pump is equipped
with a pressure relief valve that opens if internal pressure exceeds 70
PSI. The pump is relieved in both directions. An additional safety is
provided by the hydrostatic transmission, which is designed to
hydraulically relieve at 150 PSI asphalt system pressure.
WARNING: EXTREME CARE MUST BE USED DURING PUMPING
OPERATIONS TO MAKE SURE SYSTEM COMPONENTS
OPERATE AT THEIR RATED PRESSURES. FAILURE TO
CHECK THE CONDITION OF ALL HOSES AND
CONNECTIONS WHEN PUMPING COULD RESULT IN
SEVERE BURNS, INJURY OR DEATH.
WARNING: ALWAYS CHECK THE CONDITIONS OF THE HOSES AND
CONNECTIONS WHEN PUMPING. HOSE FAILURE COULD
RESULT IN SEVERE BURNS, INJURY OR DEATH.
Auxiliary Hydraulic System
The Auxiliary Hydraulic System consists of
a small hydraulic pump mounted on the
main hydrostatic pump, 4 to 8 electro-
hydraulic valves for control of spray bar
movements, and a nonadjustable
pressure relief valve. The auxiliary
system draws hydraulic fluid from the 15-
gallon reservoir mounted to the truck frame. The auxiliary pump
provides power for spray bar movements (side shift right and left, raise,
and lower) and wings raise and lower.