Lockheed C-5M, Technical Manual

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TO 1C-5M-2-1S-1
CAUTION
If the airplane is inactive and is to be exposed to freezing temperatures,
drain the waste tank as soon as possible after flight termination. Pre-charge
waste tank immediately prior to next scheduled flight. Failure to comply
could cause serious damage to tank.
o. Pre-charge the waste tank by adding 3 to 5 gallons of rinse water from the service truck.
p. Remove the rinse hose and allow all water to drain from the rinse nipple (4) and close the lever
lock cap of the rinse nipple (4).
q. Disconnect the drain line from the waste valve (5).
r. Close the waste valve (5) cover.
s. Rinse the service area with a solution of nine parts water to one part MIL-PRF-87937, Type IV
heavy duty cleaner solution, followed by thorough rinsing and drying.
t. Close the service panel door.
6. Page 3-105, following Paragraph 3.14.7, Crew Lavatory Waste Servicing (AF68-0213, AF68-0216, and
AF69-0024) of the basic manual is amended, as a result of TO 1C-5M-544, to add new Paragraph 3.14.7A
to read as follows:
3.14.7A Waste Tank Drain and Flush Procedure. (See Figure 3-34.) Drain the lavatory waste tank as
follows:
a. Open the service panel door on bottom of aircraft at FS 815.
b. Open the lever lock cap of the rinse nipple (4).
c. Connect rinse water hose of a Type A/S 32A-8 truck or equivalent to the rinse nipple (4).
d. Open the waste valve (5) cover.
e. Connect the service truck waste service hose to the waste valve (5).
f. Open the internal flapper valve of the waste valve (5) using the PUSH TO OPEN lever (2) on the
waste valve (5).
CAUTION
The waste tank drain valve must be open before starting the waste service
truck suction pump. Failure to comply could result in damage to airplane.
NOTE
Initial pull force for drain cable handle may be up to 70 pounds during
break-in period.
g. Open the waste tank drain valve by pulling the drain cable handle (6) out from the service panel.
h. Start the waste service truck suction pump.
i. After waste tank and servicing truck waste drain line has been completely drained, stop the waste
truck suction pump.
j. Rinse the waste tank by pumping water from the service truck into the rinse line for a minimum of
2 minutes.
k. Stop the flow of rinse water.
l. Start waste service truck suction pump and completely drain the service truck waste line.
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