Thermo King T-1080S, Руководство по обслуживанию

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Engine Maintenance
112
On the three cylinder engines the order for the
flywheel timing marks is 1, 2, 3, but the firing
order is 1, 3, 2. The reason for this is that the
engine fires every 240 degrees of crankshaft
rotation. Therefore, when adjusting the valves,
check the number 1 cylinder first. Then rotate
the engine past the number 2 cylinder timing
marks to the number 3 cylinder timing marks
and check the number 3 cylinder. Finally, rotate
the engine past the number 1 cylinder timing
marks to the number 2 cylinder timing marks
and check the number 2 cylinder.
Figure 197: Valve Adjustment and Firing Order
1. Remove the cylinder head cover.
2. Place the engine at top dead center of the
compression stroke for the number 1 cylinder.
a. Rotate the engine in the normal direction
of rotation (counterclockwise viewed from
the flywheel end) until the top dead center
timing mark for the number 1 cylinder on
the flywheel lines up with the index timing
mark on the starter mounting plate.
b. Check the rocker arms on the number 1
cylinder to see if they are loose.
c. If the rocker arms are loose, the engine is
at top dead center of the compression
stroke for the number 1 cylinder.
d. If the rocker arms are tight, the engine is at
top dead center of the exhaust stroke for
the number 1 cylinder. Rotate the engine
360 degrees to place the engine at top dead
center of the compression stroke for the
number 1 cylinder.
3. Use a feeler gauge to check the valve
clearance on both valves for the number 1
cylinder. The valve clearance for both the
intake valves and the exhaust valves should be
0.006 to 0.010 in. (0.15 to 0.25 mm).
NOTE: Check to make sure that the valve
stem cap is in good condition and is
positioned squarely on the top of the valve
stem. Replace the valve stem cap if it shows
significant wear.
4. Adjust the valves if necessary by loosening
the lock nut and turning the adjustment screw
until the valve clearance is correct.
CAUTION: Loosen all of the injection
lines at the injection nozzles to prevent the
possibility of the engine firing while it is
being rotated.
1. Top Dead Center Timing Mark for Number 1
Cylinder
2. Index Timing Mark on Starter Mounting Plate
Figure 198: Timing Marks
1
2