TM 5-6115-590-12
the ball seats around the bar on stem (7). Install ball seats (5) and seals (4). Install the four bolts (1), nuts (2) and tighten
uniformly.
(6) Check valve for freedom of movement and reinstall on tank.
(7) Fill the tank with fuel and check for leaks around the valves and inlet and outlet pipes. If leaks exist,
tighten the valve on the pipe. If the ball valve leaks around the stem, loosen the stem nut and tighten the retainer nut
until leak stops; then tighten the stem nut.
n.
Water Drain Value. The water drain valve (fig. 4-18) is similar to the inlet and outlet valves, except that it is a 1/2
inch rather than a 1 inch valve. Refer to paragraphs 4-23i through 4-23m for maintenance instruction.
o.
Pressure Vent Valve. The manual pressure vent valve (fig. 4-18) requires no maintenance. In the event of a
malfunction, remove and replace the valve.
p.
External Fuel Hose Assemblies. Visually inspect hose assemblies for damage, signs of leakage, stripped or
crossed threads, missing or damaged plugs or protective caps.
4-24. 400 Hz Remote Power Cable Assembly
a.
General. The 400 Hz Auxiliary Power Cable Assembly (fig. 1-15, sheet 2 of 7) is used for connecting between
two power units for remote operation of ventilating fans.
b.
Inspection. Visually inspect the cable assembly for damaged connectors, connector covers, sleeves or cables.
c.
Test and Replacement. Test individual wires for continuity. Replace cable assembly if inspection and/or test
reveals damage or lack of continuity in wires.
4-25. DC Electrical Power Standby Cable Assembly
a.
General. The standby cable assembly (fig. 1-15, sheet 1 of 7) is used to connect the 24V DC systems of two
power units together to provide for standby operation of one power plant.
b.
Inspection. Visually inspect the cable assembly for damaged connectors, connector covers, sleeves or cables.
c.
Test and Replacement. Test individual wires for continuity. Replace cable assembly if inspection and/or test
reveals damage or lack of continuity in wires.
4-26. External DC Electrical Power Input Cable Assembly
a.
General. The DC power input cable assembly (fig. 1-15, sheet 1 of 7) is used for connection to an external 24V
DC power source.
b.
Inspection. Visually inspect the cable assembly for damaged connectors, connector covers, sleeves or cables.
c.
Test and Replacement. Test individual wires for continuity. Replace cable assembly if inspection and/or test
reveals damage or lack of continuity in wires.
4-27. External Battery DC Power Cable Assembly
a.
General. The DC power input cable assembly (fig. 1-15, sheet 1 of 7) is used to connect to an external battery
in a military vehicle equipped with a 24V DC output receptacle to the power unit for auxiliary starting power.
b.
Inspection. Visually inspect cable assembly for damaged connector, lugs, adapters or cable.
c.
Test and Replacement. Test the continuity of the two wires. Replace cable assembly if inspection and/or test
reveals damage or lack of continuity of individual wires.
4-28. Water Recirculating Hose Assembly
a.
General. The water recirculating hose assembly (fig. 1-15, sheet 6 of 7) permits the circulation of water to
prevent freezing.
b.
Replacement. The recirculating hose assembly is replaced by simply disconnecting it.
c.
Inspection. Visually inspect hose assembly for damage, signs of leakage, stripped or crossed threads, missing or
damaged plugs or protective caps. Inspect heated flat for visible damage.
4-29. Vacuum Hose Assembly
a.
General. The vacuum hose assembly (fig. 1-15, sheet 5 of 7) connects the power plant vacuum outlet to
elements of the MUST system that require vacuum service.
b.
Replacement. The vacuum hose assembly is replaced by simply disconnecting it.
c.
Inspection. Visually inspect hose assembly for damaged or crossed threads or other evidence of damage.
4-30. Compressed Air Hose Assembly
a.
General. The compressed air hose assembly (fig. 1-15, sheet 3 of 7) connects the inflation ejector assembly to
the power plant compressed air outlet.
b.
Replacement. The compressed air hose assembly is replaced by simply disconnecting it.
c.
Inspection. Visually inspect hose assembly for damaged or crossed threads or other evidence of damage.
4-31. Inflation Ejector Assembly
a.
Inspection
(1) Visually inspect threaded parts for damaged, stripped or crossed threads.
4-47
