TM 1-1520-238-23
Change 7
7-502.5
7.130A. SURGE VALVE CLEANING – continued
c. Check diaphragm for leaks.
(1) Check mating surfaces of valve to be smooth
and clean.
(2) Check poppet and guide surface. No debris
allowed.
7.130A.7. Assembly
a. Assemble surge valve (7).
(1) Remove screw (32) and locknut (33).
(2) Install new seal (31) on tube (30).
(3) Install quick dump valve (29) and cover (28)
with four screws (27).
(4) Torque screws (27) to 15 INCH-POUNDS.
Use torque wrench.
(5) Install seal (26) into poppet guide (25) and
install poppet guide into valve body with
screws (24).
(6) Torque screws (24) to 10 INCH-POUNDS.
Use torque wrench.
(7) Install poppet valve (22) into guide (25).
NOTE
Care must be taken when handling dia-
phragm. A damaged diaphragm will
cause SDC malfunction.
NOTE
Diaphragm must be installed with the
machined boss facing up to engage
springs.
Later versions of the surge valve may
have two springs under the dia-
phragm. Ensure to reinstall all re-
moved parts during reassembly.
(8) Install diaphragm (21), poppet valve (22),
springs (20) and (23), cover (17), on valve
body.
(9) Install six screws (18) on cover (17).
(10) Torque screws (18) to 15 INCH-POUNDS in
crisscross pattern. Use torque wrench.
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17
19
18
20
21
22
23
24
25
26
29
28
27
19
32
33
30
M04-5219-5
31
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