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HA-420
POM
WASTE WATER SERVICING
The toilet is serviced internally in the lavatory area or externally through
an optional external service panel installed in the aft right fuselage.
Service panel caps for the drain and flush tubes are in the service panel.
When hoses from the service cart are attached to the service panel and
power to the service cart is turned on, a gate valve is opened. A pump in
the lavatory is operated by a switch in the toilet service panel and pumps
the waste from the airplane into the service cart waste tank. After the
water-supply tube valve on the service cart is opened, new flushing fluid
is pumped from the service cart to the toilet by the fill switch on the
airplane service panel. Reference the AMM for required fluids.
INTERNAL SERVICING
CAUTION
1. Remove the toilet shroud panel assembly (Figure 4-10).
2. Pull the release lever (6) to open the bowl assembly (1) and
install the waste tank cap (2) on the waste tank (3).
3. Make sure there are no leaks on the rinse fluid tank (4) or the
waste tank (3).
4. Open the service cap (5) on the rinse fluid tank (4) and fill it with
flushing fluid to the full line.
5. Install the service cap (5) on the rinse fluid tank (4).
6. Install the waste tank cap (2) on the waste tank (3).
7. Lift the waste tank (3) from the toilet cabinet.
8. Empty and clean the waste tank (3) at the correct cleaning area.
9. Install the waste tank (3) in the toilet cabinet.
October 30, 2016
Honda Aircraft Company
Wear personal protective equipment during servicing of
the water system.
HJ1-29000-005-001
FOR TRAINING PURPOSES ONLY
SERVICE, HANDLING,
AND MAINTENANCE
4-25
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