Thermo King T-1080S, Руководство по обслуживанию

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Engine Maintenance
111
Make the engine speed adjustments with the
engine fully warmed up.
Low Speed Adjustment
1. Start the unit and let it run until the engine is
warmed up.
2. Adjust the setpoint to make the engine run in
low speed (or use Service Test Mode LSC)
and check the engine speed. See
“Specifications” for the correct low speed.
3. If the engine speed is not correct, loosen the
jam nut on the low speed adjustment screw.
4. Turn the low speed adjustment screw to
change the engine speed. Turn the screw in to
increase the engine speed. Turn the screw out
to decrease the engine speed.
5. Set the engine speed at the correct low speed,
and tighten the jam nut
6. Recheck the engine speed.
High Speed Adjustment
1. Start the unit and let it run until the engine is
warmed up.
2. Adjust the setpoint to make the engine run in
high speed (or use Service Test Mode HSC)
and check the engine speed. See
“Specifications” for the correct high speed.
3. If the engine speed is not correct, loosen the
jam nuts at both ends of the high speed
adjuster in the throttle linkage.
4. Turn the high speed adjuster to change the
engine speed.
5. Set the engine speed at the correct high speed
and tighten both jam nuts.
6. Recheck the engine speed.
Adjust Engine Valve Clearance
The valve clearance should be checked after every
1,000 operating hours, maximum. It is important
that valves be adjusted to the correct
specifications for satisfactory engine operation.
Insufficient valve clearance will result in
compression loss and misfiring of cylinders
resulting in burned valves and seats. Excessive
valve clearance will result in noisy valve
operation and abnormal wear of the valves and
rocker arms. The intake and exhaust valves are
adjusted with the valve in the closed position.
NOTE: The cylinders on these engines are
numbered from the flywheel end to the water
pump end. The number 1 cylinder is next to the
flywheel. The number 2 cylinder is in the middle
and the number 3 cylinder is next to the water
pump. The timing marks on the flywheel are also
numbered this way.
The timing marks on the flywheel of the three
cylinder engines are stamped 120 degrees apart.
The top dead center marks have the cylinder
number stamped next to them. The injection
timing marks have no identification marks (see
Figure 198).
The index timing mark is stamped on the side of
the starter mounting plate that faces the
flywheel. This index timing mark is on the intake
side of the engine.
1. Low Speed Adjustment Screw
2. High Speed Adjuster
Figure 196: Engine Speed Adjustments
1
2