TM 5-3895-370-14&P
b. Disassembly.
CAUTION
Do not exchange upper and lower
bearing halves. Damage to engine
assembly
may
result
if
bearing
halves are not kept separate.
NOTE
·
All four pistons and connecting
rods are disassembled the same
way.
·
Tag and mark all bearing halves
upon removal.
(1)
Tag, mark, and remove eight bearing halves (1
and 2) from four connecting rods (3) and rod
caps (4).
(2)
Remove retaining ring (5) and wrist pin (6).
Separate piston (7) from connecting rod (3).
(3)
Remove top ring (8), intermediate ring (9), and
oil control ring (10).
(4)
Remove oil ring expander (11) from oil control
ring (10).
c. Cleaning/lnspection.
WARNING
·
Drycleaning solvent (P-D-680) is TOXIC and flammable. Wear protective
goggles and gloves; use only in a well-ventilated area; avoid contact with skin,
eyes, and clothes and do not breathe vapors. Keep away from heat or flame.
Never smoke when using solvent; the flash point for type I drycleaning solvent
is 100°F (38°C) and for type II is 140°F (60°C). Failure to do so may result in
injury or death to personnel. P-D-680 type III is a substitute for types I and II in
this application. The flash point for type III is 200°F (93°C).
·
If personnel become dizzy while using cleaning solvent, immediately get fresh
air and medical help. If solvent contacts skin or clothes, flush with cold water.
If solvent contacts eyes, immediately flush eyes with water and get immediate
medical attention.
(1)
Soak pistons in a pan filled with drycleaning solvent until carbon deposits are easily removed.
(2)
Wash pistons and connecting rods with hot water and detergent. Use a brush to remove carbon deposits.
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