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Service Manual Mitsubishi SL-Series diesel engines
Version 08/2004
ENGLISH
CYLINDER BLOCK, CRANKSHAFT,
PISTONS AND OIL PAN
INSPECTION
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4. Clearance between piston pin and piston
Measure the diameter of the piston pin and the bore in
the piston for the pin as shown in the illustration to find
the clearance. If the clearance exceeds the limit,
replace the piston or pin whichever is badly worn.
.Unit: mm (in.)
19.2 Connecting rods
Check the connecting rod for bend or twist as follows:
1) Measure “C” and “
.” If “C” exceeds 0.05 mm
(0.0020 in.) per 100 mm (3.94 in.) of “
,”
straighten the connecting rod with a press.
.Unit: mm (in.)
2) Generally, a connecting rod aligner is used to
check the connecting rod for bend or twist.
Figure 97 Measuring piston pin and bore in piston for
pin
Item
Norminal
size
Standard Limit
Diameter of
piston pin
23 (0.91)
22.994 to
23.000
(0.905 027 to
0.905 51)
Clearance
between
piston pin and
piston
—
0.006 to 0.018
(0.00024 to
0.00071)
0.050
(0.001
97)
Figure 98 Checking connecting rod for bend or twist
Unit: mm (in.)
Piston pin
Bend
Twist
C
----
0.05 (0.0020)
100 (3.94)
--------------------------------
<
C
----
0.05 (0.0020)
100 (3.94)
--------------------------------
<
Item Standard Limit
Bend or twist of
connecting rod
0.05/100
(0.002 3/4.94)
maximum
0.15/100
(0.005 9/3.94)
Figure 99 Check connecting rod on a connecting rod
aligner
NOTE
To check the rod for bend, install the cap to the
connecting rod and tighten the cap nuts to the
specified torque.
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