Section 03: FUEL SYSTEM
PA1562
15
6.3 FUEL TANK VERIFICATION
Inspect fuel tank from under vehicle for leaks or
fuel traces. If a leak is detected, repair
immediately as per "Polyethylene Fuel Tank
Repair" in this section.
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.
6.4 POLYETHYLENE FUEL TANK REPAIR
NOTE
Fuel level must be lower than perforation to
carry out this procedure.
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.
1. Locate perforation on fuel tank.
2. If necessary, remove fuel tank as per
instructions in this section.
3. Drill perforation with a 23/64" bit. Make sure
drill hole is perfectly round.
4. Insert a screw (Prevost #500196) and a
washer (Prevost #5001244) into anchor nut
(Prevost #500331).
5. Place assembly in drill hole. Tighten screw
by 10 complete turns. Refer to Fig. 18.
6. Apply sealant on head plug (Prevost
#507300) and seal hole with the head plug.
SCREW
NYLON WASHER
ANCHOR NUT
FUEL TANK INTERIOR
FIGURE 18: FUEL TANK REPAIR 03014
7. FUEL SPECIFICATIONS
The quality of fuel oil used for high-speed diesel
engine operation is a very important factor in
obtaining satisfactory engine performance, long
engine life and acceptable exhaust emission
levels.
The U.S. Environmental Protection Agency
(EPA) has issued new standards to improve air
quality by significantly reducing emissions
through a combination of cleaner-burning diesel
engines and vehicles.
To meet EPA standards, the petroleum industry
produces Ultra Low Sulfur Diesel (ULSD) fuel,
also referred to as S15, containing a maximum
15ppm (parts-per-million) sulfur.
On-highway diesel engines meeting 2007
emission regulations are designed to operate
ONLY with ULSD fuel. ULSD fuel will enable the
use of cleaner technology diesel engines and
vehicles with advanced emissions control
devices, resulting in significantly improved air
quality.
7.1 FUEL TYPE
EPA-07 engines like the DDC 2007 Series 60
are designed to run on Ultra Low Sulfur Diesel
(ULSD) fuel, which can contain no more than 15
ppm sulfur.
Fuel used must meet engine manufacturer’s
specification. For Detroit Diesel engines refer to
“Diesel Fuel Specifications” as stated in DDC
publication 7SE270 L
UBRICATING OIL, FUEL, AND
FILTERS. Similarly for Volvo engine.
CAUTION
ULSD fuel is necessary to avoid fouling the
engine’s Aftertreatment Device (ATD).
Improper fuel use will reduce the efficiency of
the engine’s Aftertreatment System and may
permanently damage the system.
CAUTION
Owners of 2007 and later model year on-
highway diesel engine must refuel only with
ULSD fuel.
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