assembly delivers water from the source to the power
c.
Inspection and Testing.
plant water system inlet.
Both
hose
assemblies
are
heated
by
(1)
Visually inspect the dual water
thermostatically-controlled electric heating elements
hose assembly for damage, signs of leakage, stripped or
powered from the power plant 400 Hz electrical system.
crossed threads on coupling nuts and electrical
connectors, missing or damage protective cap or plugs.
b.
Disassembly. The water recirculating hose
and' water supply and drain hose assemblies (fig. 10-4)
(2)
Test the heater with 400 Hz, 120
shall be disassembled only as necessary for repairs
VAC. Connector pin arrangement is as follows: pin A:
indicated after inspection and testing.
spare, pin B: spare, pin C: 400 Hz, 120 VAC (phase),
pin D: 400 Hz, 120 VAC (neutral), pin E: ground.
c.
Inspection and Testing.
(3)
Test for leaks at 100 PSI water
(1)
Visually inspect the hose assemblies
pressure.
for damage, signs of leakage, stripped or crossed
threads, missing or damaged plugs or protective caps.
d.
Repair and Replacement.
Inspect heated flap of water recirculating hose assembly
for visible damage.
(1)
Replace. damaged
or
missing
plugs, connector or protective cap.
(2)
Test the heaters with 400 Hz 120
VAC.
(2)
If wires are defective in the electrical
Connector pin arrangement is: pin A: spare, pin B:
cable, one of the spare wires (pin A, pin B) may be
spare, pin C: 400 Hz, 120 VAC (phase, pin D: 400 Hz,
utilized if the remainder of the cable is in good
120 VAC (neutral), pin E: ground.
condition. The connector pin must be jumped to the
new pin connection to obtain power through the mating
(3)
Test for leaks in hoses at 75 PSI
connector on the power plant, and the new wire must be
water pressure.
connected to the heating element at the cable splice.
d.
Repair and Replacement.
(3)
If hose assembly is damaged
beyond simple repair and replacement, replace the
(1)
Replace damaged
or
missing
entire assembly.
plugs, connector, or protective cap.
10-6. Water Recirculating Hose and Water Supply
(2)
If wires are defective in the electrical
and Drain Hose Assemblies
cable, spare pins A and B may be utilized if remainder
a.
General.
The water recirculating hose
of cable is serviceable. Pins must be jumped for proper
assembly is utilized to recirculating cold water back to
connection to obtain power through mating connection
source to prevent freezing in cold weather operation and
power plant.
for recirculation of hot water back through the power
plant water system. The water supply and drain hose
Section IV. EXTERNAL FUEL FILTER ASSEMBLY
a.
Refer to TM 5-6115-586-12 and remove the
10-7. General
two filter elements, gaskets, cases, and retainer rings
The fuel filter assembly delivers and filters fuel from the
according to instructions provided.
external fuel fitting. It consists of a dual element filter
with a selector valve, three hose assemblies for
b.
connection to fuel source and one hose assembly with
shutoff valve.
fuel shutoff valve for connection of filters to power plant
fuel inlet.
c.
Remove two nuts, four flat washers, and two
bolts to remove filter head assembly from fuel filter
10-8. Disassembly
bracket.
10-7