3-13. Hydraulic Cylinder and Piston. - ContinuedFigure 3-9. Hydraulic Cylinder and Piston, Repair.(12) Remove packing (20), retaining ring (21), seal ring (22), and three packings (23) from piston endof cylinder housing.Dry cleaning solvent, PD-680, used to dean parts is potentially dangerous to personnel andproperty. Avoid repeated and prolonged skin contact. Do not use near open flame or exces-sive heat. Flash point of solvent is 100°F-136°F (38°C-60°C).3-25TM 5-5420-209-34WARNING
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