TM 9-4310-397-14
6-10. CONNECTING ROD, PISTONS, RINGS, AND LINERS AND CYLINDER BLOCK INSPECTION AND
REPAIR. - Continued
Figure 6-75. Remove Piston Rings
CAUTION
Always follow manufacturer's instructions, and safety steps exactly. When
washing pistons, always use a stiff bristle brush, not a wire brush, to loosen
carbon residue.
(d)
Clean with hot water and liquid detergent, soak pistons in a 50 per cent solution of liquid household
detergent and hot water for 30 to 60 minutes. Use a stiff bristle brush, but not a wire brush, to loosen ,
carbon residue. Dry with compressed air.
(e)
Carefully use a stiff bristle brush to remove all debris and scale from the OD of the liners. Make
certain there are no nicks or burrs in areas where packings will seat.
(f)
Thoroughly clean liner ID with a 50 percent solution of hot water and liquid detergent.
(g)
Rinse thoroughly and wipe dry with a clean, dry rag (item 2, section II, appendix E).
(h)
Swab out liner as many times as necessary with clean lubricating oil (item 10, section II, appendix E).
(i)
Continue to clean liner until a clean, white rag shows no discoloration.
CAUTION
Gasoline, or commercial solvents have a high flash point and can ignite
and cause personal injury to personnel.
NOTE
Solvents will not remove all the abr asives from liner walls.
(j)
Carefully inspect the clean pistons under magnification for signs of fatigue.
(k)
Look for fine cracks in the piston head (Figure 6-76, 1).
6-62