MICRO - BIRD
18
STOP ARMS - ELECTRIC
Stop arms are required on school buses per FMVSS 131.
Stop arm assemblies have several moving parts and they
require occasional cleaning and lubrication.
Electric stop arms, are activated by the warning lamp system
thru a control relay.
The "STOP" sign must extend and if equipped with lights, the
lights must be operating at anytime the red lights of the warning
light system are flashing. There are some unique, state-designed
warning light/stop arm systems that permit the stop arm to be
withdrawn while warning lights are in operation. For those situa-
tions an audible alarm sounds to alert the driver of the condition
HEATERS
GENERAL INFORMATION
Blue Bird heaters are hot water type which depend on heat
generated by the engine for their function. Heat from the engine
is picked up by the engine coolant which is pumped through the
heaters inside the body and back to the engine. A typical heater
inside the body is made of a heater exchanger core and fans which
move air across the core. Air moving across the core picks up heat
from the engine coolant and transfers it into the body.
Satisfactory performance of the body heaters is basically
dependent upon:
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