TM 5-4310-393-14
CAUTION
Piston rings are marked TOP and should be installed as marked. Piston breakage
may occur if rings are opened more than necessary when removing or installing
them. Do Not Strain Rings.
b.
If piston replacement is necessary, piston rings must also be replaced.
c.
Install oil control ring (Figure 5-44,
Item 1), cast iron compression ring (2) and chrome
compression ring (3) in that order. Be careful not to
strain rings by opening them more than necessary
during installation.
d.
Install
new
retaining
ring
(Figure 5-45, Item 1) in lip groove of piston (3) piston pin
bore.
FIGURE 5-44. INSTALL PISTON RINGS
CAUTION
When installing cylinder, make sure piston or connecting rod does not knock
against crankcase. This could result in damage to piston or connecting rod.
e.
Insert connecting rod (Figure 5-45,
Item 4) into bottom of piston (3). Make sure that opening
of combustion chamber is on the flywheel side.
f.
Insert wrist pin (2) into piston (3)
wrist pin bore and through rod bushing of connecting rod
(4) Push in wrist pin until It contacts installed retaining
ring (1) and stops. Install retaining ring (5).
FIGURE 5-45. ASSEMBLE PISTON
5-35
