MIL-DTL-62220C
4. Reinstall tank cap and any items removed from step 1.
b. Fuel lines.
1. Prepare preservative container assembly (see Figure 1). Position selection
valve to OFF and fill with preservative/lubricating oil conforming to grade 10
of MIL-L-21260. If required for inspection (see 6.2), a solution of red dye and
preservative shall be used (see 3.3.5.1).
2. With the fuel pump switch on the instrument panel in OFF position, the quick-
disconnect on the main engine inlet fuel line shall be uncoupled from the
primary fuel filter (see Figure 3). Connect the line from the preservative
container to the primary fuel filter.
3. When use of red dye is required for inspection, the filter may be removed from
the primary fuel filter housing and a bypass may be used to connect the fuel
pump to the fuel injection line (see Figure 3). Disconnect the fuel line between
the fuel pump and the secondary fuel filter at the point closest to the secondary
fuel filter. The fuel injection line from the secondary fuel filter shall be
disconnected at the point closest to the secondary fuel filter. Connect the fuel
line from the fuel pump to the fuel injection line. The engine valve for the
smoke generator must be in the open position.
4. Uncouple the engine fuel return line quick-disconnect and fasten the
transparent plastic recovery line to the fuel return line (see 3.2.2.1 and
Figure 3). Position a recovery container at the end of the transparent line.
5. Position the selector valve on the preservative container assembly to allow for
flow of preservative. Turn the fuel pump switch to the ON position.
6. Engage the smoke generator by turning the switch on the driver's control panel
to the ON position. Operate the main engine at idle speed (750-800 rpm) until
the remaining fuel is flushed from the fuel lines. The engine shall use
preservative as fuel until 2.0 gallons of fuel and preservative are collected from
the recovery line in the recovery container. An increase in the amount of
smoke out of both exhaust openings shall be observed when the smoke
generator is using preservative as fuel. This procedure requires approximately
three minutes. Discard the fuel mixture collected in the recovery container in
accordance with unit standard operating procedure.
7. Disengage the smoke generator by turning the switch on the driver's control
panel to the OFF position.
17
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business