H-5 RELAY AIR VALVE (cont)
CLEANING, INSPECTION, AND REPAIR
Drycleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and use only in
a well-ventilated area. Avoid contact with skin, eyes, and clothes and don't breathe vapors. Do not use
near open flame or excessive heat. The flash point is 100 138°F (38 590C). If you become dizzy, get
fresh air and medical aid immediately. If contact with eyes is made, wash your eyes and get medical aid
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Do not direct compressed
air against skin. Use goggles or full face shield.
Use a cloth dampened with drycleaning solvent and remove grease and oil from exterior and interior of bodies.
Use drycleaning solvent and clean metal parts. Dry with compressed air.
Inspect metal parts for cracks, breaks, cuts, or other damage. Replace damaged parts.
10. Check that springs have not rusted, become distorted, or taken a permanent set. Replace damaged springs.
11. Use silicone grease and lubricate O-rings, O-ring grooves in spool valves, and bushings into which spool valves
enter. Use a clean, lint-free cloth and remove excess lubricant.
Valve assemblies are under a spring load. Use caution during assembly procedures so that no parts fly
out, causing injury to personnel.
12. Assemble diaphragm follower unit assembly (16) by the following:
Install spring (20) and seat (19) on follower (21). Secure with retainer (18).
Install O-ring (22) on stem of follower (21).
13. Install diaphragm follower unit assembly (16) in body (17).