AUTOMATIC BRAKE VALVE (cont)
Remove six nuts (91), relay valve cover (92), and gasket (93).
Use elongated slot to remove diaphragm.
Remove three retaining bolts (94), three nuts (95), upper follower (96), diaphragm (97), and lower follower (98).
Remove retaining ring (99), exhaust valve assembly (100), diaphragm stem (101), and spring (102).
Disassemble exhaust valve assembly (100) by removing 0-ring (103), retaining ring (104), retainer (105), valve seal
(106), housing (107), O-ring (108), and spring (109) from exhaust valve cage (110).
Remove retaining ring (111).
Remove supply valve assembly (112).
Disassemble supply valve assembly (112) by removing O-ring (113), retaining ring (114), retainer (115), seal (116),
housing (117), O-ring (118), and spring cage (119) from supply valve cage (120).
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
Use a cloth dampened with drycleaning solvent and remove grease and oil from exterior of brake valve body and
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 drycleaning solvent and clean metal parts. Dry with compressed air.