Mitsubishi L2E Service Manual

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Service Manual Mitsubishi L-Series diesel engines
Version 08/2004
PISTON AND CONNECTION ROD
ENGLISH
ENGINE MAIN PARTS
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.
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.
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.
Figure 71 Measuring ring side clearance
Ring Standard Service Limit
No. 1 — 0.3 [0.0118]
No. 2 0.05 to 0.09
[0.0020 to 0.0035]
0.2 [0.0079]
Oil 0.03 to 0.07
[0.0012 to 0.0028]
0.2 [0.0079]
Table 28 Inspection of ring groove in piston, unit in
mm [in.]
NOTE
No. 1 ring is the semi-key stone type ring.
Figure 72 Installation of piston and connecting rod
Special tool Part No.
Piston pin setting tool ST332400
Table 29 Piston pin setting tool

Mitsubishi L2E Specifications

General

Engine Model	L2E
Number of Cylinders	2
Starting System	Electric starter
Lubrication System	Forced lubrication by trochoid pump
Cooling System	Water-cooled