Isuzu 4LE2, Workshop Manual

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52
ENGINE
Clearance between piston pin and piston pin hole
mm (in)
Standard
4LE2
0.007 – 0.017
(0.00027 – 0.00067)
Piston ring gap
With the ring inserted into the cylinder bore, push it in
with the piston head so that it becomes a right angle to
the cylinder, and then measure the gap of the piston
ring.
If worn beyond the limit, replace the rings.
mm (in)
Standard Limit
1st 0.2 – 0.35
compression ring (0.0079 – 0.0138)
1.5
2nd compression 0.35 – 0.5
(0.0590)
ring (0.0138 – 0.0197)
Oil ring
0.2 – 0.4 1.0
(0.0079 – 0.0157) (0.03937)
Clearance between piston ring groove and ring
Measure clearance at several places on the circumfer-
ence.
If worn beyond the limit, replace the rings or piston.
4LE2 mm (in)
Standard Limit
1st 0.085 – 0.105 0.2
compression ring (0.0033 – 0.0041) (0.0078)
2nd 0.050 – 0.085
compression ring (0.0020 – 0.0033) 0.15
Oil ring
0.030 – 0.070 (0.0059)
(0.0011 – 0.0027)
Fig. 92
Fig. 93