PREVOST LE MIRAGE XLII BUS SHELLS Maintenance Manual Download

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Section 03: FUEL SYSTEM

PA1564

5. FUEL

TANK

All XLII series motorhomes are equipped with a
high-density cross-link polyethylene fuel tank.
WE vehicles fuel tanks have a total capacity of
250 US gallons (945 liters) while W5 can be
equipped with an optional 90 US gallons (341
Liters) auxiliary stainless steel tank forward of
the standard 208 US gallons (787 liters) fuel
tank. The main tank is located just forward of the
rear baggage compartment, between the A/C
condenser and evaporator. The auxiliary tank is
located in the baggage compartment just
forward of the main tank.

On all vehicles, fuel filling access doors on both
sides of vehicle provide direct access to filler
necks; offering the added advantage of refueling
from either side of vehicle.

A pressure relief valve on the fuel tank
connection-panel relieves high-pressure buildup
and an overflow tube allows offset air in the tank
to escape during filling. For 95% of the tank
volume, 5% of tank inside space is kept filled
with air with no exit opening, allowing for a fuel
expansion safety margin. A drain plug,
accessible from under the vehicle, is fitted at the
bottom of the tank(s).

5.1 TANK REMOVAL

DANGER

Park vehicle safely, apply parking brake, stop
engine and set battery master switch(es) to the
OFF position prior to working on the vehicle.
Before working under an air-suspended
vehicle, it is strongly recommended to support
the body at the recommended jacking points.

NOTE

Before removal, the fuel tank should be
completely drained by unscrewing the drain
plug. Ensure that the container used has a
capacity equal to the amount of fuel remaining
in the tank.
For vehicles equipped with a transverse tank
or an auxiliary tank, drain it as well since it is
directly connected to the main tank.
It is possible to drain both tanks through only
one plug, but the other tank will not drain
completely since the connecting hose is not on
the bottom.

5.1.1 Main Fuel Tank

1. Open the condenser door and remove the

fuel tank access panel. The rear baggage
compartment fuel tank access panel may
also be removed to facilitate access to
components.

2. If applicable, unscrew clamps retaining L.H.

side filler tube to the fuel tank, then
disconnect tube and remove it.

3. Unscrew clamps retaining R.H. side filler

tube to fuel tank and filler neck. Disconnect
tube and remove it.

4. If applicable, unscrew auxiliary return line

and/or auxiliary return line from fuel tank
connection-panel.

5. Unscrew engine supply and return lines

from fuel tank connection-panel, identify
them for reinstallation.

NOTE

For vehicles equipped with a transverse tank or
an auxiliary tank, the two hoses joining the tanks
should be disconnected.

6. Disconnect electrical wiring from tank on

connection plate.

DANGER

Before removing the bolts securing the tank
support to the frame, make sure the tank is
supported adequately. Failure to do so could
result in injury as well as damage to the tank.

PREVOST LE MIRAGE XLII BUS SHELLS, Maintenance Manual

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