The USA emission legislation (Federal Clean Air Act)
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17
Fuel system
Fuel recommendations
The fuel used must be clean, completely distilled,
stable and noncorrosive. Distillation series, cetane
number and sulphur content are the most important
factors when selecting the fuel which will give
optimum combustion and the least possible wear .
The engine operating conditions and the ambient
temperature influence the choice of fuel as regards
its performance at low temperatures, which is
reflected in the cetane number .
If the machine is to operate at low temperatures,
below 0 °C (32 °F), a fuel of a lighter distillate or with
a higher cetane number is preferable. (Final boiling
point max. 349 °C (660 °F) and a cetane number of
at least 45).
In order to avoid too great sedimentation and
minimise the emissions of sulphur dioxide, the
sulphur content of the fuel must be as low as
possible. The diesel fuels recommended for use in
Volvo engines must meet the requirements according
to ASTM D 975 No. ID (C-B) or No. 2D (T-T) and
have a cetane number of no less than 42 and a
sulphur content not exceeding 0.5 percent by weight.
Check for possible fuel leaks
(while the engine is
running at high idle):
• Make a visual check of connections and hose
couplings.
Check the condition of fuel hoses with regard to:
• Ageing
• Cracks
• Blisters
• Scuffing
Check the condition of the fuel tank:
• Drain condensation water.
• Check for cracks.
• Check for leaks.
• Check mountings.
Check the turbocharger:
• Make a visual check for any leaks of the
turbocharger induction
hoses and exhaust pipe.
