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Page Title: Cleaning and Inspection
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TM 5-4210-233-14&P-1 4-200.  AERIAL DISCHARGE VALVE PNEUMATIC ACTUATOR - Continued (8) Remove center split spacer (13). (9) Remove spring clip (14) and retaining washer (15). (10) Tap shaft downward and remove.  Take care to protect actuator bore from possible damage from lower pinion gear teeth.  As drive shaft (1 0) is being withdrawn, the internal components can be removed in sequence.  Upper spacer (16), upper pinion gear (17), lower pinion gear (18), lower spacer (19) and keys (20). (11) Remove spring clip (21) and retaining washer (22) from drive shaft (10). (12) Remove two bearings (23) from actuator body (24).  Remove and discard four O-rings (25 and 26). c. Cleaning and Inspection. WARNING Dry cleaning solvent P-D-680 is potentially dangerous.  Avoid repeated and prolonged breathing of vapors and skin contact with the liquid.  Do not use near open flame, arcing equipment or other ignition sources.  Always wear eye protection and protective clothing.  The flash point of P-D-680 is 100 to 138 deg. F (38 to 59 deg. C). (1) Clean all metal parts in dry cleaning solvent (Item 3, Appendix E). WARNING Death or serious injury could occur if compressed air is directed against the skin.  Do not use compressed air for cleaning or drying unless the pressure is/has been reduced to 30 psi (2.11 kg/cm2) or less.  When working with com- pressed air, always use chip guards, eye protection, and other personal protective equipment. (2) Dry all parts with compressed air. (3) Inspect pistons (11) for scoring.  Inspect teeth on pistons (11) for damage.  Replace pistons as necessary. (4) Inspect pinion gears (17 and 18) for damage.  Replace as necessary. (5) Inspect piston bores and drive shaft bore in actuatorbody (24) for scoring. (6) Inspect all other parts for damage.  Replace parts as necessary. 4-503

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