86

SERVICE DATA AND SPECIFICATIONS (S.D.S.)

__Inspection and Adjustment (Cont'd)-

Main journal inner diameter Grade No. 0	49.000-49.004 (1.9291 - 1.9293)
Grade No. 1	49.004 - 49.008 (1.9293 - 1.9294)
Grade No. 2	49.008 - 49.012(1.9294 - 1.9296)
Grade No. 3	49.012-49.016 (1.9296- 1.9298)
Difference in inner diameter between cylinders Standard	Less than 0.05 (0.0020)
Wear limit	0.20 (0.0079)

PISTON, PISTON RING AND PISTON PIN Piston

Unit: mm (in)

SEM646

Piston skirt diameter "H"
Standard	70.967 - 71.017 (2.7940 - 2.7959)
"L" dimension	9 (0.35)
Piston pin hole diameter	17.003 - 17.012 (0.6694 - 0.6698)
Piston clearance to cylinder	0.023-0.043
błock	(0.0009 - 0.0017)

AVAILABLE PISTON: Refer to Conversion Table.

CONN/ERSION TABLE

Cylinder liner borę — Piston — Piston ring set

	Cylinder liner borę		Piston			Piston ring set
	Grade number	Borę diameter mm (in)	Grade number	Piston diameter mm (in)	Part number	Part number	Top & 2nd ring Identification
Standard	1	71.000 -71.010 (2.7953 -2.7957)	1	70.967 - 70.977 (2.7940 - 2.7944)	12010-05B01	12033-05B10	Color: Yellow
	2	71.010 -71.020 (2.7957 -2.7961)	2	70.977 - 70.987 (2.7944 - 2.7948)	12010-05B02	12023-055 • 1
	3	71.020 -71.030 (2.7961 -2.7965)	3	70.987 -70.997 (2.7943 -2.7952)	12010-05 B03
	-	71.030 - 71.040 (2.7965-2.7968)	A	70397-71.007 (2.7952 - 2.7955)	12010-05B04
		71.040 -71,050 (2.7968 - 2.7972)	5	71.007 -71.017 (2.7955-2.7959)	12010-05B05
0.20 mm (0.0079 in) oversize	-	71.200 - 71.250 (2.8031 -2.8051)	-	71.167 -71.217 (2.8018-2.8038)	12010-05B06	12035-05B10	Number: 20