Man D 2840 LE 301, Repair Manual

Page: 160 / 194

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