Volvo Penta 5.7 Gil-B, Operator'S Manual

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52
Maintenance and Care
Fuel Cell
DANGER!
Frequently check the fuel cell for signs of fuel
leakage. Should signs of leakage develop, have it
serviced immediately by your Volvo Penta dealer.
The fuel cell has two electric fuel pumps, a filter and a
vapor separator/fuel cooler tank. The low pressure fuel
pump (2) draws fuel from the fuel tank through the fuel
filter (1).
The fuel is sent from the low pressure fuel pump to the
vapor separator/fuel cooler tank (3). Here, the fuel is
cooled and the vapors are drawn out of the fuel through a
port (4) to the intake manifold. In the manifold, the vapors
are safely mixed with the incoming air and burned in the
cylinders with the fuel air mixture of the engine.
The high pressure fuel pump (5) draws fuel from the vapor
separator/fuel cooler tank and sends the fuel to the
injection system. During periods of low fuel demand such
as idle, the fuel recirculates between the injection system
and the vapor separator/fuel cooler tank to help prevent
vapor lock in the fuel system.
Caution!
Do not run the fuel pumps dry. This will damage
the fuel pumps
1
2
3
4
5
Fuel Injection
The function of this fuel metering system is to deliver the
correct amount of fuel to the engine under all operating
conditions. Fuel is delivered by electronic fuel injectors
mounted in the throttle body or the intake manifold. The
fuel injectors are controlled by the ECM. It requires no
periodic maintenance or adjustment. If operational prob-
lems occur, see your Volvo Penta dealer.
Flame Arrestor
The flame arrestor should be cleaned annually. Remove
flame trap and clean in kerosene or other solvent. Blow
through with compressed air and check for damage.
Reinstall flame trap, check that flame trap is securely
mounted.
DANGER!
To avoid the danger of an explosion or fire in the
engine compartment, the engine must always
have an undamaged flame arrestor securely
installed.