TM 1-1520-238-23
7-532
7.139.
BLEED AIR SHUTOFF VALVE/CHECK VALVE REMOVAL/INSTALLATION continued
7.139.3. Removal
a. Remove valve (1).
(1) Remove tube (2). Hold union (3). Remove nut
(4).
(2) Remove two nuts (5) and (6). Use socket.
(3) Remove two couplings (7) and (8).
(4) Remove valve (1).
(5) Remove check valve (9) from between pres-
sure manifold (10) and secondary air seal
(11).
(6) Remove and discard packing (12).
NOTE
If replacing valve, go to step b. If not, go
to paragraph 7.139.4.
b. Remove union (3) from valve (1).
(1) Remove union (3).
(2) Remove and discard packing (13).
7.139.4. Cleaning
a. Wipe removed and attaching parts with a
clean rag.
7.139.5. Inspection
a. Check pressure manifold, secondary air seal
and couplings for cracks, dents, distortion,
and nicks (para 7.114).
b. Check removed and attaching parts for corro-
sion (para 1.49).
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