TM 5-4220-227-14
6-9.
PRESSURE RELIEF VALVE.
This task covers:
a.
Repair
b.
Calibrate
INITIAL SETUP:
Tools
Materials/Parts (Cont)
General Mechanic's Tool Kit
Detergent, Nonionic (Item 8, Appendix E)
(NSN 5180-00-177-7033)
Cloth, Lint-Free (Item 6, Appendix E)
Distilled Water (Item 9, Appendix E)
Materials/Parts
Equipment Condition
Pressure Relief Valve
Bands, Rubber (Item 4, Appendix E)
Pressure relief valve removed (para. 5-9).
Bags, Plastic (Item 3, Appendix E)
a.
Repair. (figure 6-14)
(1)
Remove rivet (1) and lever (2) from left cap (3).
(2)
Remove seal (4), screw (5) and remove left cap (3).
(3)
Remove left nut (6) from stem (7).
(4)
Remove seal (8), screw (9), (10), and (11) from body (12).
(5)
Remove nozzle (13), top spring step (14), spring (15), and bottom spring step (16) from stem (7).
(6)
Remove stem (7) from nozzle (13).
(7)
Remove retainer (17), locknut retainer (18), ball (19), control ring (20), and ring (21) from nozzle (13).
(8)
Remove locknut compression screw (22) and locknut (23) from body (12).
(9)
Clean all components using nonionic detergent cleaner and rinse with clean distilled water.
(10)
Inspect all components and replace any component that is bent, cracked, worn or otherwise damaged.
(11)
Install locknut (23) and locknut compression (22) on body (12).
(12)
Install ring (21), control ring (20), ball (19), locknut retainer (18) and retainer (17) on nozzle (13).
(13)
Install stem (7) in nozzle (13).
(14)
Install bottom spring step (16), spring (15) and top spring step (14) on stem (7).
(15)
Install nozzle (13) with stem (7) in body (12).
6-28
