Air Tanks; Coolant Level Verification; Water Separator; Belt Tensioners - PREVOST Motorcoach XL Series Operator's Manual

FIGURE 106
CAUTION:
Wheel bearing oil fill cap is supplied
with a very small vent hole in its center.
Occasionally insert a small tip (toothpick size) to
be sure that hole is not plugged; a plugged hole
may cause leakage when heat expands the oil
and air.
NOTE:
On vehicles equipped with grease-
lubricated wheel bearings, pack with wheel
bearing grease.

AIR TANKS

The air coming from the air dryer is first forwarded
to the wet air tank, then to the primary,
supplementary primary, secondary and accessory
air tanks. Two additional air tanks may have been
installed on the vehicle: the kneeling air tank and
emergency/parking brake overrule air tank.
The accessory air tank must be purged during
pre-starting inspection.
purge this reservoir at the end of every working
day by using the remote accessory air tank drain
valve located in steering compartment underneath
accessory air filter.
FIGURE 107
13003A
A good practice is to
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Furthermore, purge all tanks using their bottom
drain valve each time the oil and filters are
changed (maximum 12,500 miles 20,000 km)).
For tank locations, refer to figure in "Lubrication
and servicing schedule" further in this section.
COOLANT LEVEL
VERIFICATION
The cooling system is completely filled when the
coolant (cold) is visible in the sight glass of the
surge tank (see page 2-37 for location).
topping-up is necessary, fill the system with the
same mixture ratio already used in the system.
WARNING:
pressure. Never remove cap when coolant is hot
as severe burns can result. Allow engine to cool
before checking coolant level.

WATER SEPARATOR

A fuel filter/water separator may be installed in
engine's primary fuel filter location, in engine
compartment, to prevent water infiltration in
engine fuel system.
periodically, or when the water separator indicator
lamp lights in dashboard. To drain, loosen self
venting drain below separator, and tighten after
water has been flushed out.
FIGURE 110

BELT TENSIONERS

6 - 7
CARE & MAINTENANCE
Hot engine coolant is under
(Optional)
It should be drained
If
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