Northern Lights OLP LP445, Operator'S Manual

Page: 13 / 36

OLP 05/00
11
Servicing
SP6. VALVE CLEARANCES
The following special tools will be needed:
JDE 820 or JDE 83 Flywheel Turning Tool.
JDE 81-4 Timing Pin.
1. Check the valve clearances after the first 600 hours, the
first 1200 hours and every 1200 hours thereafter.
2. Remove rocker arm cover with ventilator tube.
3. Remove plastic plugs in engine timing holes on front
side of flywheel.
4. Rotate flywheel in clockwise direction (viewed from
water pump) with the Flywheel Turning Tool until the
Timing Pin engages timing hole in the flywheel. Both
rocker arms for No. 1 cylinder will be loose at Top
Dead Center. If they are not, remove the timing pin and
rotate the flywheel one complete turn and reinstall the
timing pin in the flywheel.
5. Valve clearances must be checked with the engine cold.
Intake Valve: 0.012-0.015 in. (0.31-0.38 mm)
Exhaust Valve: 0.016-0.019 in. (0.41-0.48 mm)
4-CYLINDER ENGINES:
NOTE: Firing order is 1 - 3 - 4 - 2
Reproduced by permission of Deere & Company, c2000. Deere & Company.
All rights reserved.
A - Front of Engine
B - No. 1 Piston at TDC Compression Stroke
C - No. 4 Piston at TDC Compression Stroke
E - Exhaust Valve
F - Intake Valve
Lock No. 1 piston at TDC compression stroke (B).
Adjust valve clearance on No. 1 and No. 3 exhaust
valves and No. 1 and No. 2 intake valves.
Rotate flywheel 360°. Lock No. 4 piston at TDC
compression stroke (C).
Adjust valve clearance on No. 2 and No. 4 exhaust
valves and No. 3 and No. 4 intake valves.
6-CYLINDER ENGINES:
NOTE: Firing order is 1 - 5 - 3 - 6 - 2 - 4
Reproduced by permission of Deere & Company, c2000. Deere & Company. All rights reserved.
A - Front of Engine
B - No. 1 Piston at TDC Compression Stroke
C - No. 6 Piston at TDC Compression Stroke
E - Exhaust Valve
F - 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 flywheel 360°. Lock No. 6 piston at TDC
compression 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.
FUELS - GENERAL
1. Use only clean, high quality fuels of the following
specifications, as defined 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. Use fuel having less than 1% sulphur (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 industrial or marine fuels.
e. ASTM-D975-60T No. 4-D and higher number
fuels.
f. JP4