TM 5-4310-379-14
4-31.
Portable Air Filtration System (Cont).
b
Repair. (figure 4-43)
(1)
Remove four valves (1).
(2)
Remove four hex nipples (2).
(3)
Remove four elbows (3) and two tee's (4).
(4)
Remove two pressure gages (5) and reducers (6).
(5)
Remove two tee's (7).
(6)
Remove four screws (8), brackets (9), clamps (10), and two plates (11).
(7)
Remove two elbows (12), nipples (13), elbows (14), and reducers (15).
(8)
Remove filter assembly (16), nipple (17), filter assembly (18), nipple (19), and filter assembly (20).
(9)
Inspect frame (21) for cracks or broken welds and repair by welding.
(10)
Inspect valves (1) and replace if cracked or otherwise damaged.
(11)
Inspect hex nipples (2), elbows (3), tee's (4), reducers (6), tee's (7), elbows (12), nipples (13), elbows (14),
reducers (15), nipple (17), and nipple (19), and replace if cracked or threads are stripped.
(12)
Inspect filter assemblies (16), (18), and (20) and replace if cracked or otherwise damaged.
(13)
Inspect clamps (10) and replace if cracked or otherwise damaged.
(14)
Inspect brackets (9) and replace if bent or otherwise damaged.
(15)
Inspect screws (8) and plates (11) and replace if bent or threads are stripped
.
WARNING
Leave 1 1/2 threads exposed on fitting when applying teflon tape. This will ensure that no teflon tape will
hang down inside the air system. Teflon tape should be wrapped in such a manner that when the fitting is
tightened the tape will not loosen. Failure to wrap teflon tape correctly may result in contamination or
blockage of the air system and subsequent possible injury or death to the diver.
(16)
Apply teflon tape to all pipe threads.
(17)
Install nipple (19), filter assembly (18), nipple (17), and filter assemblies (16) and (20).
(18)
Install two reducers (15), elbows (14), nipples (13), and elbows (12).
(19)
Install two plates (11), four clamps (10), brackets (9) and secure with four screws (8).
(20)
Install two tee's (7), reducers (6), and pressure gages (5).
(21)
Install two tee's (4), four elbows (3), hex nipples (2), and valves (1).
Change 1
4-106
