TM 10-4610-241-24
TO 40W4-13-42
3-64. RELAY VALVE REPAIR (MODELS WPES-10 and H-9518-1) - continued.
(9)
Remove four cap screws (22), flat washers (23), part number plate (24), cover (25) and
sealing ring (26).
(10)
Remove exhaust valve seat (27).
(11)
Remove piston assembly (28) and preformed packing (29 and 30).
(12)
Remove adapter (31) and filter (32) from body (33).
b.
Cleaning.
(1)
Using mild soapy water, wash all parts.
(2)
Using clean, lint-free rags, wipe all parts dry.
c.
Inspection.
(1)
Inspect springs (9, 16 and 20) for deformity and damage.
(2)
Inspect exhaust diaphragm (3), relay piston (19), exhaust cover (6), body (33), cover (25),
adapter and inlet and exhaust valve (18) for corrosion, cracks, excessive wear, or
damaged threads.
d.
Repair.
Replace seals and gaskets and defective components as required.
Change 1 3-355