TM 9--2350--292--20--1
0005 00--20
THEORY OF OPERATION -- CONTINUED
0005 00
DEEP WATER FORDING KIT -- CONTINUED
Sealing and Miscellaneous Materials Non--hygroscopic tape is applied around the engine oil fill cap and oil
gauge rod, transmission oil filler neck, electro magnetic clutch bayonet gauge and vent, main winch fill/tube/bayonet
gauge and/or excessively large open areas if required.
Fording sealer is used as a sealing compound around exterior stowage compartment doors, main winch cable
opening, removable hull front cover and all mounting surfaces of the vehicle and deep water fording components.
Electrical insulating and sealing compound is used to seal all exposed electrical connections.
Wiping cloths are supplied to be used in cleaning and drying the vehicle preparatory to sealing.
One spanner wrench is provided for installing bilge pump discharge hoses.
ELECTRICAL SYSTEM
Batteries Six 12--volt batteries are connected in a series--parallel circuit to give the vehicle a 300--ampere/hour
source of 24 V dc power. The batteries are located in the left side of the engine compartment.
Positive Bus Distributes power from the batteries to the vehicle electrical systems.
Master Switch Located on the Driver’s switch panel. When moved to ON, applies battery voltage to the electrical
system. When engine is running, it supplies generator voltage to the electrical system.
Master Relay The master relay is located in the left rear of the engine compartment. It controls primary power to
all electrical systems and components except personnel heater system, the MASTER switch and the NATO slave
receptacle.
Auxiliary Power Receptacle (NATO Slave) Used to connect two vehicles together to charge batteries or jump
start a vehicle.
Starter The 24--volt, waterproof starter assembly is mounted on the lower left side of the engine towards the rear.
It is a heavy--duty, solenoid--operated, enclosed shift--lever--type engine starter. The motor utilizes 12 brushes re-
tained in six brush holders which are accessible through inspection plugs in the motor frame. The drive clutch is a
heavy--duty over--running type with adjustable pinion clearance.
Low Voltage Protection Module Prevents starter operation below 12 volts.
Engine Generator Waterproof, oil--cooled 28 V dc, 650 ampere field regulated unit. Mounted on the right side of
engine (flywheel end) and is gear--driven by the engine. Engine oil is circulated through the generator for cooling.
Voltage Regulator Maintains generator output voltage of the engine at a constant 28+0.7 V dc. Located left rear
of engine compartment.
Auxiliary Power Unit (APU) Power from the batteries powers the motor/generator to start the APU. Once started,
the motor/generator generates 28 V dc to the APU voltage regulator.
APU Voltage Regulator Receives 28 V dc from motor/generator and provides 28+0.7 V dc to charge the batteries.
Located left rear of engine compartment.
