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 TM 10-3930-660-24-2
PISTONS, PISTON PINS AND RINGS MAINTENANCE - CONTINUED
0276 00
REMOVAL - CONTINUED
4.
Remove second retaining ring (5), from side of piston (3).
5.
Remove and discard piston rings (6 thru 8) and oil ring expander (9).
5
6
3
7
8,9
409-970
409-982
CLEANING
WARNING
Solvent cleaning compound, MIL-PRF-680 Type III is an environmentally compliant and low toxic mate-
rial. However, it may be irritating to the eyes and skin. Use protective gloves and goggles. Use in well-ven-
tilated areas. Keep away from open flames and other sources of ignition.
CAUTION
Do not use bead blast to clean pistons. Bead blasting may damage piston.
1.
Soak pistons (3) in clean cleaning solvent compound
3
to remove carbon deposits.
10
2.
Wash pistons in a strong solution of laundry detergent
and hot water, to remove carbon residue. Use a stiff
bristle brush.
3.
Clean ring grooves in piston (3) using square end of a
broken piston ring (10). Use care to avoid scratching
ring sealing surfaces in piston grooves.
409-983
0276 00-2
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