Service manual

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Item
Gap
No.1 com-
pression
ring
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No_ 2 compression
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Oil ring
Diameter
Clearance in pistons
Fit in piston pin
bushings
Inside diameter
of piston pin
bushing
Bend, twist
Crankpin diameter and fit
in connecting rod bearing
Nominal
Assembly
standard
dimension
[Standard clearance]
[ 0.30 - 0.50 \
(0.0118 -0.0197)
2.5 (0.098)
0.050 - 0.085
[(0.00197 - 0.00335)]
2.0 (0.079)
0.025 - 0.060
[(0.00098 - 0.00236)\
4.0 (0.157)
25 (0.984)
o 0
-0.006 <-0.00024)
0-0.016
[(0 -0.00063)\
0.020 - 0.051
[(0.00079 - 0.00201)\
25 (0.984)
+0.020 (+0.00079)
+0_045 +0.00177
0.05/100 (0.002/4
),max
58 (2.283)
0.Q35 - 0.100
[(0.00138
-0.00394)\
Unit: mm (in.)
Repair limit
Service limit
Remedy
Remarks
[Clearance]
[Clearance]
Compress rings to 84 (3.31) dia.
[ 1.5 \
I~~
(0.059)
oo~C
o c
.) Ring side clearance
[ 0.20 \
Measure side clearance
(0.0079)
with ring kept flush with
Replace rings if service
second land.
limit
is reached. Re-
place pistons if the
&%
limit is exceeded.
CD
[ 0.15 \
ell
(0.0059)
®
l-Compression ring
2-Straightedge
3-Piston
2) When replace oil ring,
replace it together
with
expander .
Replace piston pin if
[0.05 \
repair limit is reached.
(0.0020)
Replace piston if the
limit is exceeded.
[ 0.08 \
Replace piston pin or bush-
(0.0031)
ing. (Ream if necessary.)
0.15/100
(0.0059/4)
Replace bearings if repair
limit is reached. Regrind
Cap must be installed with
[ 0.20 ]
(0_0079)
crank pins and use under- marks on cap and lad on
size bearings if repair the same side.
limit is exceeded.