TM 1-1520-238-23
Change 7
7-502.3
7.130A. SURGE VALVE CLEANING – continued
7.130A.4. Disassembly
CAUTION
Adjustment of the surge valve is preset at
time of manufacture. Do not disturb the
surge valve setting.
a. Remove surge valve cover (17) from surge
valve (7).
(1) Remove six screws (18) from cover (17). Do
not tamper with adjusting screws (19).
(2) Remove spring (20), diaphragm (21), poppet
valve (22), and spring (23).
CAUTION
Note the position of the diaphragm. Dur-
ing reassembly, the machined boss on
the diaphragm must be facing up to en-
gage the spring or failure of the surge
valve will occur.
(3) Remove two screws (24) from poppet guide
(25).
(4) Remove poppet guide (25).
(5) Remove seal (26) from poppet guide (25). Do
not discard seal.
(6) Remove four screws (27) from quick dump
valve cover (28).
(7) Remove quick dump valve (29).
NOTE
Do not bend tube or weld at the tube-end
may be broken.
(8) Separate cover (17) from tube (30).
(9) Remove and discard seal (31).
(10) Remove screw (32) and locknut (33).
GO TO NEXT PAGE
17
19
18
20
21
22
23
24
25
26
29
28
27
19
32
33
30
M04-5219-3
31
7
