Electric Cooling Fans; Air Tank Purge - PREVOST H3-45 VIP Owner's Manual

ELECTRIC COOLING FANS

Inspect fan blades regularly, check for dirt or grime
accumulations on the blade that could cause
vibrations, clean as necessary using water and
regular strength degreaser:
Check for cracks and signs of abrasion on the
blades that could indicate contact with debris or
obstruction during operation;
Check the bottom of the shroud cover and remove
debris that could have accumulated. In sub-zero
winter area, also check for snow and ice
accumulation that could block the fan blades
rotation;
Open the fan shroud as necessary (remove top
and bottom hex screws) to facilitate cleaning and
debris removal;
FIGURE 10: FAN SHROUD TOP & BOTTOM HOLD-
DOWN SCREWS
NOTE
Electric cooling fan motors are sealed and
certified IP6K9K and IP68.They can therefore be
safely power/pressure washed.

AIR TANK PURGE

The vehicle is equipped with many air tanks.
Purge the accessory air tank before each trip. The
accessory air tank drain cock is accessible from
the front service compartment.
The wet, primary, secondary and optional air tanks
must be purged at every oil change or at least
every 12,500 miles (20 000 km). They are
equipped with a drain cock underneath the tank.
Drain tanks by turning cocks counterclockwise.
PA-1619 Owner's Manual H3-45 VIP
Care and Maintenance 8-9