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Engine assembly tolerance
- 150 -
Items
D28 series
Remarks
Cylinder
Inside dia. of liner forced in joint part (upper part)
145.800 ~ 145.840
145.8 H7
block
Inside dia. of liner forced in joint part (lower part)
144.500 ~ 144.540
144.5 H7
Inside dia. of liner color forced in part
153.900 ~ 154.150
153.9 H11
Liner colored surface depth
9.97 ~ 9.99
Cylinder
Outside dia.of liner forced in joint part(upper)
145.741 ~ 145.786
145.8 g6
liner
Outside dia. of liner forced in joint part(lower)
144.432 ~ 144.457
144.5 f6
Outside dia. of liner color part
153.65 ~ 153.75
153.8
Liner collar height
10.03 ~ 10.05
Liner forced in joint part (upper)
0.014 ~ 0.079
Liner forced in joint part (lower)
0.043 ~ 0.108
Liner collar part clearance
0.150 ~ 0.500
Inside dia. of liner
127.990 ~ 128.010
128 ± 0.01
Liner’s roundness & columness (upper)
0.01
from top up to
168mm
Liner’s roundness & columness (lower)
0.015
from bottom up to
85mm
Liner’s projection
0.04 ~ 0.08
measure at 4 place
Piston
Outside diameter of piston
127.739 ~ 127.757
measure 71.5mm part
Inside diameter of piston pin
46.003 ~ 46.009
from bottom(long length)
Max. allowable weight per engine
50g
1st ring groove width
3.5
2nd ring groove width
3.040 ~ 3.060
Oil ring home width
4.020 ~ 4.040
Piston
1st ring height (thickness)
3.5
ring
2nd ring height (thickness)
2.978 ~ 2.990
Oil ring height (thickness)
3.97 ~ 3.99
1st ring axial direction clearance
-
2nd ring axial direction clearance
0.050 ~ 0.082
Oil ring axial direction clearance
0.030 ~ 0.062
1st ring end part clearance
0.35 ~ 0.55
2nd ring end part clearance
0.40 ~ 0.60
Oil ring end part clearance
0.40 ~ 0.70
Piston pin Piston pin’s outside diameter
45.994 ~ 46.000
Clearance between piston pin & pin hole
0.009 ~ 0.015
