Northern Lights OL1276, Руководство оператора

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OL1276 03/10
14
SP7-9. FUEL FILTERS
1. Your engine or generator set should have a primary
fuel fi lter installed. We recommend the Racor brand
of fuel fi lter - water separators.
a. Check the primary fuel fi lter daily as recommended
by the fi lter manufacturer. Empty the collection
bowl as necessary.
b. Change the element every 250 hours or whenever
necessary.
c. If the bowl fi lls with water, change the primary
and secondary elements immediately.
2. Change secondary fuel fi lter every 600 hours.
NOTE: The fuel fi lter on the engine is considered the
“secondary fuel fi lter”.
a. Turn off the fuel.
b. Be sure area around fuel fi lter assembly is clean.
c. Remove the cap from the fuel fi lter housing. Use
the palm of your hand only, a wrench will destroy
the
cap.
Figure 2: Secondary Fuel fi lter
d. Operate the hand primer until the fuel fi lter pops
up. Do not use a screw driver as this will cause a
vacuum leak and scratch the housing.
e. Install new fi lter cartridge, do not reuse the old
one. A stalled engine could result from air
bubbles in the old fi lter cartridge causing fuel to
over fl ow from the housing.
f. Drain the fuel from the separator bowl.
Servicing
g. Ensure that the fuel level is between the minimum
and maximum marks on the center tube in the
middle of the
fi lter housing. If the fuel is below the
minimum level, use the hand primer to add more
fuel. Fuel level below the minimum could cause
the engine to stall because of trapped air in the new
fi lter. Fuel level above the maximum could cause
the fuel to over fl ow from the fi lter housing when
the fuel fi lter is installed.
h. Install new fi lter, replace cap, restart (see below
subcatagories a-h fi rst) engine and run for fi ve
minutes minimum.
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. Normally it is not necessary to bleed the fuel system
- using the hand primer is usually suf fi cient. But if the
engine has run out of fuel or the fuel system was full
of air, use special tool #53-50005 to quickly prime and
bleed the fuel system.
Note: If tool is not available, loosen diagnostic con-
nector on
fi lter housing until air and fuel can escape.
a. To bleed the fuel system, open the drain valve
(Figure 2-A)
on the fuel fi lter and use hand primer to
drain water and contaminants.
b. Attach an open line to the diagnostic port above the
hand primer and put the end of the line in a
container for diesel fuel using tool #53-50005.
c. Pump the hand primer until a steady fl ow of fuel
without bubbles comes out.
d. Disconnect the line from the diagnostic port.
e. Close the return line.
f. Pump primer until fi rm.
g. Crank the engine until it starts (15 seconds
maximum, 60 seconds rest).
h. Open return line.
A - Drain Valve
B- Water Separator
Sediment Bowl
C- Cap
D- Hand Primer
Reproduced with permission from John Deere & Company, c.2003. All rights reserved.
RG12829
Figure 2.1
A - Diagnostic Port
B- Hand Primer
C- Water Drain Valve