Farymann Diesel 15W Repair Manual page 57

3. Oil pressure check
The oil pressure depends mostly on the wearing
conditions of the bearings. Before checking the
oil pressure make sure that the oil level is
topped and oil with correct viscosity is used.
Remove the oil channel plug screw and connect
oil pressure gauge with adaptor.
Oil pressure values, hot engine ):
Idle speed => min press. 0,5 bar ( 7 PSI )
Nominal speed => min press. 1,8 bar ( 23 PSI )
If oil pressure is to low first check the pressure
relief valve before starting further dismantling of
the engine.
4. Fuel system, basic
The fuel flows from the (ext.) tank through the
fuel feed pump ( option ), fuel filter to the injec-
tion pump. Higher supplied quantity will flow
back via return line. Returning fuel carries heat
away from the system.
Returning fuel also ensures a constant bleed in
the fuel system.
From the injection pump fuel is fed through the
high pressure line to the injector. Higher supply
will be carried back through the return line.
Injector pressure settings:
15/18W – engines : 200 bar
32W – engines : 175 bar
5. Fuel filter
The fuel filter prevents the entry of dirt into the
injection pump. The normal lifespan of a fuel
filter is approx. 1000 operating hours, however it
depends on the purity of the fuel used.
Prior to changing fuel filter, clean the fuel lines
from dirt with a rag. Close off the line between
filter and tank with a clamp.
TEST RUN, ADJUSTMENTS
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15/18W – engines :
Plug screw located on crankcase side.
Pull the inlet and outlet line from the filter. Dis-
card the used filter ! Don't try to clean it !
Reassemble and check correct connection.
Note
Watch out for the correct direction of flow (
signed on filter Housing ).