TM 5-3820-246-14&P
5-7. ENGINE AND CYLINDER PISTON
(5) Remove two retaining rings (7).
(6)
Remove pin (8) with a suitable rod or punch.
(7) Remove engine piston (9) from connecting
rod (10).
(8) Remove two piston rings (11) using a piston
ring expander.
NOTE
Do not press out bushing unless inspection
shows need for replacement.
(9)
If necessary, press bushing (12) out of
connecting rod (10).
Cleaning/Inspection.
b.
Dry cleaning solvent P-D-680 is TOXIC
and flammable. Wear protective goggles
and gloves and use in well ventilated area.
Avoid contact with skin, eyes, and clothes,
and do not breathe vapors. Do not use
near open flame or excessive heat. The
flashpoint 100 140 degrees F (38 60
degrees C). If you become dizzy while using
cleaning solvent, get fresh air immediately
and get medical aid, If contact with eyes is
made, wash your eyes with water and get
medical aid immediately.
Clean all parts with dry cleaning solvent
(1)
P-D-680 and dry with rag.
(2)
Measure piston ring gaps in cylinder at position A. Normal gap is between 0.0098 in. to 0.0177 in. (0.25
mm to 0.45 mm). Replace if greater than 0.03937 in. (1.0 mm).
Measure engine cylinder dimension B at top and bottom of bore. Normal bore is between 2.4409 in. to
(3)
2.4417 in. (62.00 mm to 62.019 mm). Replace if greater than 2.4448 in. (62.1 mm).
Measure engine cylinder bore at position C. Normal bore is between 3.3465 in. to 3.3472 in. (85.00 mm to
(4)
85.019 mm). Replace if greater than 3.3495 in. (85.08 mm).
