TM 10-4320-309-14
TM 4320-14/1
Piston ring breakage may occur if rings are opened more
than necessary when installing. Never stretch piston rings
more than necessary.
1st compression ring
2nd compression ring
Oil ring
Figure 5-38. Piston Ring Installation
c.
Use the piston ring remover tool to install piston rings. Install oil ring, 2nd compression ring, and 1st
compression ring in order.
d.
Make sure each piston ring gap is 120 degrees.
e.
Make sure the piston rings move smoothly.
f.
Apply liberal amount of lubricating oil to the outer surface of the piston and inner surface of the cylinder
sleeve.
g.
Align the identification mark DM in the piston head with the matching mark on the connecting rod.
h.
Make sure the main bearing is in the proper position.
i.
Install crank pin bearing insert (refer to 9, Figure 5-31) into connecting rod (refer to 2, Figure 5-31).
5-38
