TM 5-4310-393-14
CAUTION
When removing cylinder, make sure piston or
connecting rod does not knock against crank-case.
This could result in serious damage to piston or
connecting rod.
a.
Remove retaining ring (Figure 5-39, Item 1).
b.
Press out piston pin (2) far enough to remove piston
pin (2) and piston (3) from connecting rod (4).
FIGURE 5-39. PISTON
NOTE
The piston pin can be moved by hand if the engine parts are warm. If the engine
has al-ready cooled down, heat the piston to 122° F (50° C). If this is not possible,
the piston pin can be knocked out. A suitable object must be held against the
opposite side of the piston to avoid bending the connecting rod.
c.
Remove piston (Figure 5-39, Item 3) and piston pin
(2).
d.
Remove retaining ring (5).
CAUTION
Piston rings may be broken if rings are opened more
than necessary when removing or installing them. Do
not strain rings.
e.
Remove piston ring set (Figure 5-40, Item 1) from
piston (2).
FIGURE 5-40. PISTON RINGS
2.
Cleaning the Parts for Inspection
WARNING
DRY CLEANING SOLVENT P-D-680 (SAFETY OR STODDARD'S SOLVENT) IS
POTENTIALLY DANGEROUS. AVOID REPEATED AND PROLONGED BREATHING
OF VAPORS AND SKIN CONTACT WITH LIQUID. DO NOT USE NEAR OPEN
FLAME, ARCING EQUIPMENT, OR OTHER IGNITION SOURCES. ALWAYS WEAR
EYE PROTECTION AND PROTECTIVE CLOTHING. THE FLASH POINT OF P-D-680
IS 100 TO 138 DEGREES F (38 TO 59 DEGREES C).
WARNING
DEATH OR SERIOUS INJURY COULD OCCUR IF COMPRESSED AIR IS DIRECTED
AGAINST THE SKIN. DO NOT USE COMPRESSED AIR FOR CLEANING OR
DRYING UNLESS THE PRESSURE HAS BEEN REDUCED TO 30 PSI (2.06 BAR) OR
LESS. WHEN WORKING WITH COMPRESSED AIR ALWAYS USE CHIP GUARDS,
EYE PROTECTION, AND OTHER PERSONAL EQUIPMENT.
5-32
