Doosan DX60R Shop Manual page 333

2. Rotate the crankshaft so the crankpin for the piston being
installed is near bottom dead center.
Ensure the piston ring gaps are located correctly (Figure
218)
Reference
Number
1
2
3
3. Using a piston ring compressor, compress the piston
rings.
The piston and connecting rod must be installed in the
correct orientation. The orientation of the piston to the
cylinder is different depending on engine model.
Piston Orientation to Cylinder - By Model
Orient the piston identification mark stamped on top of
the piston on the fuel injection pump side of the engine
Piston Installation - 4TNV98-E
When correctly assembled, the piston identification mark
(2, Figure 219) stamped into the top of the piston will be
on the same side of the connecting rod as the match
marks (4, Figure 219) stamped into the connecting rod
and connecting rod cap.
When installed in the cylinder, the piston identification
mark (2, Figure 219) stamped on the top of the piston
must face the fuel injection pump side (1, Figure 219) of
the engine and the embossed mark on the connecting rod
(3, Figure 219) must face the flywheel end (5, Figure 219)
of the engine.
Reference
Number
1
2
3
4
5
6
Engine
IMPORTANT
Description
Top Compression Ring End Gap
Second Compression Ring End Gap
Oil Ring End Gap
IMPORTANT
4TNV98-E
Description
Fuel Injection Pump Side of Engine
Piston Identification Mark
Embossed Mark on Connecting Rod
Rod and Cap Match Marks
Flywheel End of Engine
Camshaft Side of Engine
Figure 218
6
5
Figure 219
1
2
3
4
FG008960
SP001693
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