TM 10-4610-234-13
4.28.1
This task consists of
a. Removal
e. Repair
b. Disassembly
f. Assembly
c. Cleaning
g. Installation
d. Inspection
INITIAL SET-UP:
Tools:
Tool Kit, General Mechanics, Automotive (Appendix B, Sec. Ill, Item 1)
Vice (Appendix B, Sec. Ill, Item 2)
Pipe Wrench (from Accessory Kit)
Materials/Parts Required:
Detergent, General Purpose (Appendix D, Item 1)
Rag, Wiping (Appendix D, Item 2)
Tape, Anti-seize (Appendix D, Item 3)
Gasket, Coupling, MS27030-6
a.
b.
c.
d.
Removal. Disconnect check valve from water system (refer to para. 2.10 to disconnect couplings).
Disassembly.
(1)
(2)
(3)
Clamp check valve in vice.
Remove cap (1) from male coupler (5).
Remove chain (2) from cap (1) and male coupler (5).
(4) Remove plug (3) from female coupler (6).
(5) Remove chain (4) from plug (3) and female coupler (6).
(6) Using pipe wrench, unscrew male coupler (5) from check valve body (13).
(7) Using pipe wrench, unscrew female coupler (6) from check valve body (13).
(8) Remove gasket (7) from female coupler (6).
(9) Remove gasket (8) from cap (1).
(10) Using pipe wrench, remove valve body cap (9) from valve body (13).
(11) Unscrew threaded plug (11) from valve body (13).
(12) Pull pin (10) from valve body (1 3).
(13) Remove disc assembly (12) from valve body (13).
Cleaning.
(1) Clean all components with clean water and detergent.
(2) Rinse components in clean water and dry with wiping rag.
lnspection.
(1) Inspect check valve body (13) and cap (1) for cracks, corrosion and stripped or damaged
threads.
(2) Inspect coupling halves (5 and 6) for cracks and stripped or damaged threads.
(3) Inspect disc (12) for cracks and distortion.
e. Repair. Replace damaged parts.
Change 2
4-40.1
