LONCIN LC2V80FD Maintenance Manual page 61

Chapter V Disassembly & Repair
Outer diameter of piston skirt
Measure and record the outer diameter of piston skirt at the
place 10 mm away from the maximum lower edge of the
piston skirt; the measuring direction is perpendicular to the
piston pin hole.
Standard
79.965-79.975 mm
Clearance between piston and cylinder
The difference between the maximum diameter of cylinder and
the diameter of the piston skirt is the clearance between piston and cylinder.
Standard
0.025-0.045 mm
Clearance to the side of piston ring
Gas ring 1
Gas ring 2
Oil ring
Width of piston ring
Gas ring 1
Gas ring 2
Oil ring
Clearance to the end of piston ring
Gas ring 1
Gas ring 2
Oil ring
Before measuring the clearance to the end of piston ring, locate the piston ring with the top of the piston to make
it not erect in the inner hole of the cylinder.
Maintenance Limit
79.755 mm
Maintenance Limit
0.255 mm
Standard Maintenance Limit
0.02-0.06 mm
0.03-0.08 mm
Standard Maintenance Limit
2.9 mm
3.3 mm
2.6 mm
Standard Maintenance Limit
0.2-0.4 mm
0.3-0.5 mm
0.2-0.7 mm
0.11 mm
0.15 mm
2.77 mm
3.17 mm
2.07 mm
0.7 mm
0.8 mm
1.0 mm
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