THEORY OF OPERATION -- CONTINUED
DEEP WATER FORDING KIT -- CONTINUED
Auxiliary Power Unit Preparations and precautions should be taken before and after submersion of the auxiliary
power unit to prevent corrosion and separation of hot leads due to electrolysis by exposure to salt water and the
destruction of the brushes, brush holder and armature by sand.
A plug (6) is installed in the APU exhaust outlet to keep water out.
Personnel Heater The personnel heater is not operable during fording operations. The exhaust outlet (7) is
plugged during fording operations and unplugged after fording operations.
Fire Extinguisher System Eight rubber fire extinguisher nozzle caps (8) protect the extinguisher system from en-
trance of water and contaminants. These caps (8) are not sealed and would be blown off the nozzles upon activa-
tion of the system.
Crew Fan Air Duct Housing and Boom Foot Drains The crew fan duct seal (9) consisting of a rubber seal be-
tween two metal plates fits into and seals the crew fan air duct housing.
Shutoff hose clamps (10) are used to control water flow from the boom foot drains.