15
Ø
Ø
1,5
I
II
III
1,5
I
II
III
Limit values
Service Data
Dimensions
158
Pistons
Compression height: 81,250−81,300 mm
with undersize
0,2 mm: 81,050−81,100 mm
0,4 mm: 80,850−80,900 mm
0,6 mm: 80,650−80,700 mm
Piston protrusion above crankcase top:
0,01−0,38 mm
46,005−46,013 mm
Piston bolt diameter:
45,994−46,000 mm
127,835−127,875 mm
Max. difference in weight per engine pis-
ton set: 100g
Piston ring grooves
3,455−3,485 mm
3,040−3,060 mm
4,020−4,040 mm
1st ring − keystone ring
Height: 3,296−3,330 mm
2 nd ring − Minute ring:
Height: 2,978−2,990 mm
Axial clearance:0,050−0,082 mm
3rd ring − bevelled ring
Height: 3,975−3,990 mm
Axial clearance:0,030−0,062 mm
Ring gap:
1.st ring: 0,5−0,7 mm
2rd Ring: 0,45−0,70 mm
3rd Ring: 0,25−0,55 mm
Piston rings
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