Northern Lights and NL1066H3 Operator's Manual - page 23
ONL2-2 7/13
21
Servicing
6-CYLINDER ENGINES:
NOTE: Firing order is 1 - 5 - 3 - 6 - 2 - 4
Reproduced by permission of Deere & Company, c2005. Deere & Company. All rights
reserved.
RG4777
Figure 14
A - Front of Engine
B - No. 1 Piston at TDC Compression Stroke
C - No. 6 Piston at TDC Compression Stroke
E - Exhaust
Valve
I - Intake
Valve
Lock No. 1 piston at TDC compression stroke (B).
Adjust valve clearance on No. 1, No. 3, and No. 5
exhaust valves and No. 1, No. 2, and No. 4 intake valves.
Rotate fl ywheel 360°. Lock No. 6 piston at TDC com-
pression stroke (C).
Adjust valve clearance on No. 2, No. 4, and No. 6
exhaust valves and No. 3, No. 5, and No. 6 intake valves.
Replace rocker arm cover and crankcase ventilator tube.
Rocker Arm Adjusting Screw Jam Nut
Torque: .............27 N•m (20 lb-ft)
FUELS - GENERAL
1. Use only clean, high quality fuels of the following
specifi cations, as defi ned by ASTM designation
D975 for diesel fuels:
a. Use Grade No. 2 diesel at ambient temperatures
above freezing 30°F (0°C).
b. Use Grade No.1 at ambient temperatures below
freezing and for all temperatures at an altitude of
above 5,500 ft. (1500 meters).
2. Sulphur content should not exceed 0.5% (preferably
less than 0.5%).
3. The cetane number should be a minimum of 45.
4. DO NOT use these unsuitable grades of fuel:
a. Domestic heating oils, all types, b. Class B engine,
c. Class D domestic fuels, d. Class E, F, G or H indus
trial or marine fuels,
e. ASTM-D975-60T No. 4-D
and higher number fuels, f. JP4
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.
6. Biodiesel:
Biodiesel involves the transesterifi cation of vegetable oils or animal
fats. Mainly in the U.S. soybean methyl ester is used (SME), but in
Europe mainly rapeseed (canola) methyl ester is made (RME), and
in Asia palm methyl ester is made (PME). 100% biodiesel (B100) is
made in compliance with ASTM D6751 or EN14214 (EU) specifi ca-
tions. Biodiesel may be used in a 5% blend (5% biodiesel/ 95% diesel)
from a BQ-9000 accredited producer. 20% biodiesel blends can only
be used if they meet ASTM D6751 or EN14214 (EU) specifi cations.
A 2% reduction in power and a 3% reduction in fuel economy can be
expected using a 20% blend, and a fuel conditioner is recommended.
Biodiesel blends must be used within 90 days of their manufacture. Oil
level, leaking, microbial growth, plugging, and component degradation
all must be checked more frequently using biodiesel blends. Request
a certifi cate of analysis from an approved biodiesel fuel distributor to
make sure the blend meets specifi cations.
NOTE: Using raw pressed or partially refi ned vegetable oils or
recycled greases as fuel (which have not been through transesterifi ca-
tion) could cause engine failure.
SP8-10. 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 (500 for electron
ically controlled fuel system units) 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 500 hours.
NOTE: The fuel fi lter on the engine is considered the
“secondary fuel fi lter”. The engine will be fi tted with a
quick change disposable secondary fuel fi lter.