PREVOST X3-45 Multiplex User Manual

Section 03: FUEL SYSTEM
PA1562
6
7. Start the engine and check for leaks.
NOTE
There is a fuel system shut-off valve on the
discharge side of the secondary fuel filter. This
check valve is designed to prevent fuel loss at
time of filter replacement.
1.6 FUEL PUMP INSTALLATION
The fuel pump is driven off of the rear of the air
compressor.
FIGURE 6: FUEL PUMP LOCATION
03070
1. If removed, install inlet and outlet fittings in
the cover of the fuel pump.
NOTE
New fittings have sealant already applied.
When reusing fittings, coat the threads lightly
with Locktite Pipe Sealant, Detroit Diesel
number J 26558-92, or equivalent, before
installing. To prevent sealant from entering
fuel system, do not apply to the first two
threads of the fitting. Do not use Teflon tape
or paste on the fittings.
2. Install drive coupling in drive hub of the fuel
pump. Install a new gasket to the mounting
flange of the pump.
3. Index the drive coupling with the drive hub on
the end of the air compressor crankshaft and
align the pump mounting bolt holes with
those in the air-compressor rear cover.
NOTE
When correctly positioned, the outlet fitting on
the pump should be in approximately an 8
o'clock position when viewed from the rear,
and the drain opening in the pump body facing
down.
4. Seat the fuel pump squarely against the air
compressor. Pilot the flange on the pump
body, in the opening in the rear cover of the
compressor. Install three mounting bolts and
tighten them to 22-28 lbf-ft (30-38 Nm).
5. Connect the fuel inlet and outlet lines to the
fuel pump and tighten.
6. Prime engine fuel system before starting
engine to ensure pump seal lubrication and
prompt engine starting.

PREVOST X3-45 Multiplex Specifications

General

Length	45 ft
Width	102 in
Engine	Volvo D13
Horsepower	500 hp
GVWR	54, 000 lbs
Height	146 in
Sleeping Capacity	Varies based on floor plan
Water Capacity	Varies based on floor plan