Fuel Lines And Flexible Hoses; Preheater Fuel Filter; Fuel Tank - PREVOST H3-41 Maintenance Manual

FIGURE 10: DAVCO FUEL PRO 382 EXPLODED VIEW

4. FUEL LINES AND FLEXIBLE HOSES

Make a visual check for fuel leaks at all engine-
mounted fuel lines and connections and at the
fuel tank suction and return lines. Since fuel
tanks are susceptible to road hazards, leaks in
this area may best be detected by checking for
accumulation of fuel under the tank. Engine
performance and auxiliary equipment is greatly
dependent on the ability of flexible hoses to
transfer lubricating oil, air, coolant and fuel oil.
Diligent maintenance of hoses is an important
step in ensuring efficient, economical and safe
operation of engine and related equipment.
03076
PA1615 Maintenance Manual All Series
SECTION 03 : FUEL SYSTEM
MAINTENANCE
Check hoses daily as part of the pre-start-up
inspection. Examine hoses for leaks and check
all fittings, clamps and ties carefully. Make sure
that the hoses are not resting on or touching
shafts, couplings,
including exhaust manifolds, any sharp edges
or other obviously hazardous areas.
Since all machinery vibrates and moves to a
certain extent, clamps and ties can fatigue with
age. To ensure continued proper support,
inspect fasteners frequently and tighten or
replace them as necessary.
schematic diagram of the fuel system (Figure 1).
CAUTION
Oil level above the dipstick full mark or a
decrease in lube oil consumption may indicate
internal fuel leaks. Check oil level frequently.

5. PREHEATER FUEL FILTER

On H3 series vehicles, the preheater fuel filter is
located beside the preheater in the dedicated
compartment above the rear wheelhousing, on
the L.H. side of vehicle.
On X3 series vehicles, the preheater fuel filter is
located beside the preheater in the engine
coolant heater compartment, and is accessible
by opening the evaporator compartment door.
MAINTENANCE
Replace preheater fuel filter at the intervals
specified by the Lubrication And Servicing
Schedule in Section 24: LUBRICATION &
SERVICING.
6.

FUEL TANK

All H3 series vehicles are equipped with a high-
density cross-link polyethylene fuel tank with a
legal capacity (corresponding to 95% of gross
capacity) of 222 US gallons / 840 liters. The tank
is located just forward of the last baggage
compartment, between the A/C condenser and
evaporator. Fuel filling access doors on both
sides of vehicle provide direct access to filler
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Section 03 revised September 2016
and heated surfaces,
Refer to the
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