Volvo L20B, Owner'S Manual

Page: 20 / 110

Presentation
18 Technical data USA
Preventive maintenance program
To retain the dependability, noise level and exhaust emission con-
trol performance originally built into your conventional non-road
engine, it is essential that the non-road engine receive periodic
service, inspections, adjustments and maintenance.
Fuel system
Fuel Recommendations:
The fuel used must be clean, completely distilled, stable and non-
corrosive. Distillation range, cetane level and sulfur content are
most important when selecting fuel for optimum combustion and
minimum wear.
Engine working conditions and ambient temperature influence the
selection of the fuel with respect to cold handling properties and
cetane levels.
In cold weather conditions, below 32 ºF (0 ºC), the use of lighter
distillate or higher cetane level fuel are recommended. (Final boil-
ing point max. 660 ºF (349 ºC) and cetane min 45.)
To avoid excessive deposit formation and to minimize the emis-
sions of sulfur dioxide into the ambient air, the sulfur content of the
fuel should be the lowest available. The diesel fuels recommend-
ed for use in Volvo engines should meet ASTM designation: D 975
No. ID (C-B) or No. 2D (T-T); with a cetane level above 42 and sul-
fur content not exceeding 0.5 percent by weight.
Check for fuel leaks (with the engine running at fast idle):
– Visually check unions and hose connections.
Check the condition of the fuel hoses for:
– Ageing
– Cracks
– Blisters
– Scuffing
Check the condition of the fuel tank:
– Drain water condensation.
– Check for cracks.
– Check for leaks.
– Check the mounting.
Check the turbocharger:
– Visually check for leaks in the intake hoses and exhaust pipe of
the turbocharger.