TM 5-3805-262-34
3-12. AIR BRAKE SYSTEM MAINTENANCE (CONT)
b. Service Brake Treadle and Valve and Declutch Treadle and Valve (Cont).
DISASSEMBLY OF BRAKE VALVE (SHEET 2 OF 2)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
Slowly release your thumb from piston (22) until spring (14) is fully
extended. Remove piston (22) and assembled parts (18 thru 21).
Remove spring (14) from valve body (33).
Remove vent filter (15) from groove in top of valve body (33).
Put valve body (33) upside down on bench. Push down seat (27) with your
index finger. Remove retaining ring (16) from groove in bore at bottom of
valve body (33) using snap ring pliers.
Remove and discard valve assembly (23 thru
Remove and discard O-ring (17) from groove
32).
of piston (22).
Remove capscrew (18) and lock washer (19) from piston (22).
Remove and discard spring seat (20).
Remove spring (21) from piston (22).
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