SECTION III: PRINCIPLES OF OPERATION
3 Personnel heater. The personnel heater fuel pump is integrally suppressed by means of a feedthrough capacitor. A
0.25-mfd, 100-V dc, 20-A, feedthrough capacitor mounted on the motor housing is in series with the blower motor
positive power input lead.
4 Ventilating blower. A 0.1-mfd, feedthrough capacitor mounted in the motor housing is inserted in series with the power
input lead of the blower. The power input lead between the blower and input power connector is also shielded with
5 Roadwheels, track support rollers, and idler wheels. Static grounding springs are included in the roadwheels and track
support rollers. These coil steel springs function as grounding devices for static electricity developed by the wheels
and rollers when the vehicle is in motion.
b. OTHER MEANS
Feedthrough capacitors require good bonding or grounding to provide adequate radio noise suppression. Tinned
copperbraid bond straps, terminated in appropriate copper lugs and bonded by means of plated tooth-type lockwashers,
are used for this purpose when good contact between the component to be suppressed and ground is required. Where
clearance is not a problem and the component is mounted with bolts or other fasteners, plated tooth-type lockwashers
are used to provide the grounding.
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