TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
3-66.
RELAY VALVE MAINTENANCE (MODEL WPES-1).
This task consists of:
a. Disassembly
b
Cleaning
c. Inspection
d
Repair
e Assembly
INITIAL SET-UP:
Tools Required
General Mechanics Tool Kit (Appendix B, Section III, Item 4)
Snap Ring Pliers (Appendix B, Section III, Item 3).
Material/Parts Required
Rags, wiping (Appendix C, Section II, Item 23)
Diaphragm- 246086
O-ring 246083
O-ring 240337
O-ring 235063
O-ring - 238327
Equipment Condition
Airbrake relay valve removed (para. 2-96).
DISASSEMBLY
a.
Remove screw (18), diaphragm washer (19), and exhaust diaphragm (20).
CAUTION
Exhaust cover is installed under spring tension. Failure to release
pressure slowly can cause loss of parts. Keep pressure on
exhaust cover during removal.
b.
Remove three cap screws (17), spacers (16), and exhaust cover (15).
c.
Remove O-ring (14) and o-ring (21) from exhaust cover (15).
d.
Remove emergency spring (13), piston and valve assembly (5), and O-ring (4).
e.
Remove retaining ring (12) and inlet and exhaust valve assembly (24) from emergency piston (6).
f
Remove valve guide (11), o-ring (10), valve spring (9), and valve retainer (8) from inlet and exhaust valve
(7).
g.
Remove o-ring (10) from valve guide (11).
h.
Remove compression spring (22) and check valve ball (23).
3-340