Volvo D11 series, Installation Manual

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Fuel system
69
Stainless steel or aluminum sheet metal is a suitable
material for fuel tanks.
NOTE! All tanks must be provided with at least one
baffle plate for each 50 litres (37 gallons) of volume.
Check if there are special restrictions about volumes
and baffle plates.
Filling and venting connections must not be posi-
tioned on the side of the tank.
The fuel tank has connections for filling, venting, suc-
tion line, return line, sender for tank gauge and an
inspection hatch with cover. The suction line and the
return line should be separated as shown in the fig-
ure to prevent air and hot fuel from the return line to
be sucked back into the engine.
A shut-off valve must be installed in the suction line
as close to the tank as possible. The shut-off valve
may have a remote controlled shut-off function by
means of a push-pull cable for example. Certain mar-
kets require electrically controlled shut-off valves.
The fuel return line on diesel engines must be drawn
back to the bottom of the tank in order to avoid
air from entering the fuel system when engine is
stopped.
Position the tank on some kind of soft bedding. Do
not position the tank on wooden blocks or on other
type of uneven bedding. This might cause abnormal
stresses with subsequent risks of cracking in the
tank.
Install the fuel tank in the boat. Secure the tank by
clamping, to prevent it from moving in rough sea. The
tank shouls be located in a cold compartment of its
own in order to avoid heating of the fuel or spreading
of the fuel to other parts of the boat in case of leak-
age.
In boats where space is at a premium, the tank can
be tailored to suit the space underneath the gunwale
or some other similar space.