4-14. NO. 8 VENT VALVE (cont)
Disassemble piston diaphragm assembly (8) by the following:
Remove locknut (9), follower (10), diaphragm (11), piston (12), and flat washer (13) from piston stem (14).
Remove felt (15) and seal (16) from piston (12).
Remove exhaust valve assembly (17).
Disassemble exhaust valve assembly (17) by the following:
Compress exhaust valve assembly (17) and remove retaining ring (18).
Remove exhaust valve seat (19), exhaust valve (20), and spring (21).
Remove O-ring (22) from exhaust valve (20).
Remove O-ring (23) from exhaust valve seat (19).
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 59°C).
If you become dizzy, get fresh air and medical aid immediately. If contact with eyes is made,
wash your eyes and get medical aid immediately.
· 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 body (2).
Use drycleaning solvent and clean metal parts. Dry with compressed air.
Inspect metal parts for cracks, breaks, cuts, or other damage.