TM 10-4610-240-24
TM 08580C-24/2
TO 40W4-13-22
2-41. GATE VALVE (VENT VESSELS) MAINTENANCE - continued.
REPAIR
NOTE
Gate valve may be repaired while installed in unit.
a.
Disassembly
(1)
Remove nut (20), washers (21), and hand wheel (22) from stem (26).
(2)
Remove packing nut (23), gland (24) and packing (25).
b.
Cleaning
(1)
Wash all components with clean water and detergent.
(2)
Rinse components in clean water and dry with wiping rag
c.
Inspection
(1)
Inspect all threaded components for damaged threads
(2)
Inspect all components for corrosion
d.
Repair
(1)
Replace damaged components
(2)
Replace packing (25)
e.
Assembly
(1)
Push packing (25) into place on stem (26).
(2)
Install gland (24) and packing nut (23)
(3)
Position hand wheel (22) on stem (26)
(4)
Install washer (21) and nut (20)
2-162
