PREVOST H3-41 Maintenance Manual page 990

SECTION 23A: ACCESSORIES - H3 SERIES
FIGURE 30: SUMP TANK
8.11.2 Sump Tank Filling
Remove cap on sump tank. Fill Tank with 2
gallons (9 liters) of antifreeze and two gallons of
water.
CAUTION
Do not overfill sump tank.
NOTE
The antifreeze solution in the sump tank will
be diluted by fresh water coming from the
lavatory sink. Regular maintenance of the
sump tank is required to prevent freezing.
8.12 CLEANING CABINET
A coiled hose located in the cleaning cabinet
above the toilet can be used during lavatory
cleaning. To use, connect a fresh water supply to
the "Hansen" quick-release coupling, identified as
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"Cleaning Kit", located besides the engine oil
reserve tank (Figure 27). To prevent freezing
during cold weather, drain the hose after every
use. To drain the hose, uncoil and open the
nozzle near the lavatory floor drain. Have an
assistant push on the spring ball of the quick-
release coupling to allow air into the system.
9. AIR HORN VALVE
The air horn valve is located in the front service
compartment and the air horn valve button is on
the steering wheel center.
FIGURE 31: AIR HORN VALVE
9.1 AIR HORN VALVE MAINTENANCE
When needed, the air horn valve can be serviced
or replaced using the following procedure:
1. Unplug the cable connector;
2. Disconnect the air tubes;
3. Loosen the retaining bolts;
5. Service or replace the air horn valve;
6. Reinstall by reversing procedure.
10. HEADLIGHT CLEANING SYSTEM
The headlights cleaning system is independent
from the windshield washer system and has its
own washer fluid reservoir located in the front
electrical and service compartment. However,
this system shares the same switch than the
upper windshield washer (refer to Operator or
Owner's manual for operation). Each pressing of
this switch produces 2 successive 0.7 seconds
jets.
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