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TM 10-4930-240-13
4-19. PRESSURE REGULATING VALVE ASSEMBLY REPAIR.
This task covers:
a.
Disassembly
b.
Cleaning
c.
Repair
d.
Assembly
INITIAL SET-UP:
Tools:
Packing
(Item 17, App J)
General Mech Tool Kit (App B, Sect III, Item 1)
Packing
(Item 18, App J)
Pipe Wrench (2 ea) (App B, Sect III, Item 5)
Diaphragm
(Item 19, App J)
Equipment Condition:
Disc
(Item 20, App J)
Pressure regulating valve removed (para 4-18)
Packing
(Item 21, App J)
Material/Parts:
Tape, Anti-seize
(Item 5, App E)
Cleaning Solvent
(Item 1, App E)
Wiping Rag
(Item 2, App E)
NOTE
Ensure that all parts identified as mandatory replacement parts are discarded and
replaced with new components.
a. Disassembly.
NOTE
Disassemble pressure regulating valve only the extent required to replace
defective component.
Disassemble Piping Refer to figure 4-8.
(1) Disconnect three lines (1, 2 and 3) from valve (23).
(2) Disconnect union (4) and remove assembled piping (5).
(3) Remove union (half) (4) and nipple (6) from pressure control valve (7).
(4) Remove pressure control valve (7), bushing (8) and nipple (9) from elbow (10).
(5) Remove elbow (10) and nipple (11) from strainer (12).
(6) Remove two connectors (13 and 14) and elbow (15) from strainer (12).
(7) Remove elbow (16) and connector (17) from valve (23).
(8) Remove elbow (18) from pressure control valve (7).
(9) Remove union (half) (4), nipple (19), elbow (20), nipple (21) and bushing (22) from valve (23).
4-28
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