Doosan DX60R Shop Manual page 371

6. Using a wrench on the crankshaft pulley bolt, rotate the
crankshaft in a clockwise direction while looking through
the flywheel inspection port (1, Figure 281). Rotate the
crankshaft until the injection timing marks on the flywheel
are visible.
7. Typical flywheel markings are as shown in (1, Figure 282).
NOTE:
A typical flywheel will have multiple timing grids
depending on the number of cylinders. Any grid
can be used to check the fuel injection timing.
The flywheel shown in Figure 282 is for a "Standard
Specification" DI engine. Flywheels used on some "OEM
Specific" DI engines may be marked differently. You
should contact that specific OEM for information on the
identification of the timing marks.
Reference
Number
1
2
3
4
5
NOTE:
The TDC (Top Dead Center) mark can be
identified by the cylinder numbers stamped near
the TDC mark on the flywheel.
If you are uncertain as to the timing degree designation of
the timing marks on the flywheel timing grid, you can
determine the timing degree designation by measuring
the timing grid.
• First measure the distance between two of the
"longer" marks on the timing grid. (They are 5° apart.)
Then measure the distance from the TDC mark to the
first "longer" mark on the timing grid. Divide that
measurement by the distance between the two
"longer" marks. The resulting answer will tell you how
many degrees there are between the TDC mark and
the first "longer" mark.
Engine
Description
10° BTDC (Before Top Dead Center)
15° BTDC
20° BTDC
Direction of Rotation
TDC (Top Dead Center)
Figure 281
Figure 282
SP001693
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