Northern Lights OLP LP445, Operator'S Manual

Page: 14 / 36

OLP 05/00
SP7-9. FUEL FILTERS
1. Your engine or generator set should have a primary
fuel filter installed. We recommend the Racor brand
of fuel filter - water separators.
a. Check the primary fuel filter daily as recommended
by the filter manufacturer. Empty the collection
bowl as necessary.
b. Change the element every 200 hours or whenever
necessary.
c. If the bowl fills with water, change the primary
and secondary elements immediately.
2. Change secondary fuel filter every 600 hours.
NOTE: The fuel filter on the engine is considered the
“secondary fuel filter”. The engine will be fitted with a
quick change disposable secondary fuel filter.
a. Turn off the fuel.
b. Open the filter drain plug
(Figure 11-A)
and drain
the filter.
Figure 11: Secondary Fuel filter
c. Remove the secondary fuel filter by turning the
filter clamp
(Figure 11-B)
counter clockwise until
the filter cartridge
(Figure 11-C)
slides out.
BLEEDING THE FUEL SYSTEM
CAUTION:
Escaping diesel fuel under pressure
can penetrate the skin, causing serious personal
injury. Before disconnecting lines be sure to
relieve all pressure. Before applying pressure to
the system be sure all connections are tight and
the lines, pipes and hoses are not damaged. Fuel
escaping from a very small hole can be almost
invisible. Use a piece of cardboard or wood rather
than the hands to search for suspected leaks. If
injured by escaping fuel, see a doctor at once.
Serious infection or reaction can develop if proper
medical treatment is not administered immediately.
1. Whenever the fuel system has been opened for
service, (lines disconnected, filter changed, etc.) it
will be necessary to bleed air from the system.
a. To bleed the fuel system, loosen the bleed plug
(Figure 11-D)
on the fuel filter.
Operate the primer pump lever on fuel transfer
pump (see component locations) until the
air bubbles are expelled and clear fuel escapes the
bleed plug. Tighten the bleed plug.
b. If the engine will not start, it may be necessary to
loosen the fuel supply pipe at the pump. Operate
primer lever of fuel supply pump until fuel flow
is free from air bubbles. Retighten fuel supply
line to 22 ft. lb. (30 N•m).
c. If engine still doesn't start, loosen fuel line
connection at injection nozzle. Always use a back
up wrench when loosening or tightening fuel lines
at nozzles and injection pump to avoid damage.
With throttle on full, crank the engine over with
the starter until fuel without air flows from the
loose fuel pipe connection. Repeat procedure for
remaining nozzles, if necessary, until engine
starts or until air has been removed from system.
Tighten the connections to 20 foot lb. (27 N•m).
12
Servicing
5. Storing fuel:
a. Keep dirt, scale, water and other foreign matter
out of fuel.
b. Avoid storing fuel for long periods of time.
c. Fill the fuel tank at the end of each day's
operation. This will reduce condensation.
NOTE:
Before installing a new filter cartridge make sure the
surfaces where the cartridge comes in contact with the
mounting plate are absolutely clean. Dirt can be washed
into the fuel injection system. This may result in severe
damage to the fuel injection pump or nozzles.
d. Install new filter cartridge.
e. Fuel filter cartridge number is: 24-51005
f. Turn on the fuel.