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ENGINE MAIN PARTS
Figure 71
Measuring ring side clearance
Figure 72
Installation of piston and connecting rod
Service Manual Mitsubishi L-Series diesel engines
Version 08/2004
PISTON AND CONNECTION ROD
CAUTION
a.
When only the replacement of rings are to be
made, without reboring (honing) of the cylinder,
measure the ring at less worn portion of the
cylinder bore.
b.
When replacing rings, make sure to install the
new rings having the same size as the piston.
c.
Piston rings available for servicing are sized by
three classes: STD, 0.25 OS, and 0.50 OS.
15.3.2 Inspection of ring groove in piston
Measure the side clearance between each piston ring
and ring groove of the piston. If the service limit is
exceeded, replace the ring with new one. If the
clearance still exceeds the service limit, replace the
piston with new one.
Ring
No. 1
No. 2
Oil
Table 28
Inspection of ring groove in piston, unit in
mm [in.]
NOTE
No. 1 ring is the semi-key stone type ring.
15.4 Installation
When reassembling the piston and connecting rod and
installing the piston-and-rod assemblies in the cylinder
block, pay attention to the following:
1.
Reassembling the piston and connecting rod Using
the piston pin setting tool, press the piston pin into
the set position.
Special tool
Piston pin setting tool
Table 29
Piston pin setting tool
ENGLISH
Standard
Service Limit
—
0.05 to 0.09
[0.0020 to 0.0035]
0.03 to 0.07
[0.0012 to 0.0028]
ST332400
0.3 [0.0118]
0.2 [0.0079]
0.2 [0.0079]
Part No.
69 / 155
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