Yanmar 6LY3 series - Piston and Ring

SERVICE STANDARDS
Service Standards
12/05
6LY3 Service Manual
14-7
© 2007 Yanmar Marine International
Piston and Ring
Piston
Inspection Item Standard Limit Reference Page
Piston Outside Diameter
(Measure vertical to the piston
pin)
L
105.799-105.809 mm
(4.1653-4.1656 in.)
105.780 mm
(4.1645 in.)
5-37
ML
105.794-105.799 mm
(4.1651-4.1653 in.)
MS
105.789-105.794 mm
(4.11651-4.1653 in.)
S
105.779-105.789 mm
(4.1645-4.1649 in.)
Clearance Between Piston and Cylinder
0.111-0.131 mm
(0.0043-0.0051 in.)
—
Piston Diameter Measure Position
(Upward from the bottom end of the piston)
22 mm
(0.8661 in.)
—
Piston Pin Hole Inside Diameter
37.025-37.040 mm
(1.4576-1.4582 in.)
37.100 mm
(1.4606 in.)
5-38Piston Pin Outside Diameter
36.994-37.000 mm
(1.4564-1.4566 in.)
36.964 mm
(1.4552 in.)
Clearance Between Piston Pin and Hole
0.025-0.046 mm
(0.0009-0.0018 in.)
0.110 mm
(0.0043 in.)