ENGINE
5-56
6LPA Service Manual
Cylinder Block
© 2007 Yanmar Marine International
6. Subtract the piston diameter from the cylinder
bore diameter.
• Standard oil clearance: 0.145 to 0.165 mm
(0.0057 to 0.0065 in.)
• Maximum oil clearance: 0.215 mm (0.0084 in.)
If the measured oil clearance exceeds the
specified maximum, replace all six pistons and
bore all six cylinders. Replace the cylinder block
as needed.
Note: When using a new cylinder block, make
sure the number on the cylinder block
and the number on the pistons are the
same.
7. Measure the clearance of the piston ring.
No. 1 ring (top ring):
Install a new piston ring to the piston. Measure
the clearance (Figure 5-116, (1)) between the
piston ring and ring groove using a thickness
gauge.
Figure 5-116
Figure 5-116
• Standard clearance: 0.050 to 0.095 mm
(0.002 to 0.004 in.)
• Maximum clearance: 0.20 mm (0.008 in.)
If the measured clearance exceeds the specified
maximum, replace the piston.
No. 2 ring (second ring) and oil ring:
Measure the clearance between the new piston
ring and ring groove using a thickness gauge
(Figure 5-117).
• Standard clearance No. 2 ring:
0.060 to 0.100 mm (0.002 to 0.004 in.)
Figure 5-117
Figure 5-117
• Standard clearance of oil ring:
0.030 to 0.070 mm (0.001 to 0.003 in).
• Maximum clearance: 0.20 mm (0.008 in.)
If the measured clearance exceeds the specified
maximum, replace the piston.
8. Measure the piston ring end gap.
(a) Insert the piston ring in the cylinder.
(b) Press in the piston ring to a position 130 mm
(5.118 in.) (Figure 5-118, (1)) from the
cylinder block top surface
(Figure 5-118, (2)), using the piston.
Figure 5-118
Figure 5-118
(1)
00050
3
9
0005040
(2)
(1)
0005041
Содержание 6LPA-STP2
Страница 1: ...6LPA series 6LPA Service Manual SERVICE MANUAL 6LPA STP2 6LPA STZP2 P N 0B6LP G00100 MARINE ENGINES ...
Страница 157: ...ENGINE 6LPA Service Manual 5 77 Timing Belt 12 05 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 178: ...FUEL SYSTEM 6 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 214: ...COOLING SYSTEM 7 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 230: ...LUBRICATION 8 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 248: ...TURBOCHARGER 9 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 268: ...TURBOCHARGER 9 22 6LPA Service Manual Turbocharger 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 270: ...STARTER MOTOR 10 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 288: ...ALTERNATOR 11 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...
Страница 308: ...TROUBLESHOOTING 12 2 6LPA Service Manual 2007 Yanmar Marine International This Page Intentionally Left Blank ...