MCi Crusader II 1989 Maintenance Manual page 514

Date
1-1-89 '
Page
17-2
MC-9 MAINTENANCE MANUAL
Figure 17-2. Lavatory Ventilating Blower and Motor
(On Earlier Coaches).
5. To install. place blower motor with fan and housing in
position. then attach with four capscrews.
6. Install flexible air hose to blower shroud and attach with
clamp.
ENGINE AIR
IICT
REAR CROSS
·SEAT ACCESS
7. Connect electrical wiring and tape the wiring connections
securely.
8. Check motor operation.
ENGINE VACUUM POWERED
VENTILATION SYSTEM
The lavatory ventilation system installed on later production
coaches operates off the engine vacuum. A large air hose
connects the lavatory drop tube to the engine air intake box.
The constant vacuum thus applied to the drop tube causes a
continuous flow of fresh air from the duct on the outer wall of the
lavatory to pass through the lavatory compartment (figure 17-3).
A drain line from the air exhaust elbow on the drop tube
keeps moisture from accumulating in the exhaust hose and
from entering the air intake box. See figure 17-4.
LAVATORY COMPONENTS
Various items associated with the lavatory are described
below. Refer to figures 17 -1 and 17 -5 for their locations.
TOWEL AND TISSUE DISPENSERS
A towel dispenser is mounted on the inside of the lavatory
above the sink. See figure 17 -1. Also a "Towelette" wet towel
.
\
I
OIIAIN HOSE
\. i
~
Figure 17-3. Vacuum Operated Lavatory Ventilation System.
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Figure 17-4. Drain Hose Installation.
dispenser is mounted on the insi_de of the lavatory wall above
the sink. These towels can be used for washing and drying
when temperature is below 32"F (0"C).
A tissue dispenser is mounted at the lavatory front wall. A key
is furnished for refilling dispenser.
EMERGENCY BUZZER
The lavatory emergency buzzer is mounted in the front junc-
tion box and sounds when the emergency switch button in the
lavatory compartment is pushed .. Refer to wiring diagram for
circuit continuity.
The emergency buzzer switch marked "To Signal Driver -
Emergency Only" is located on upper right corner of the front