TM 5-4310-343-35
(h) After adjustments are made, retest for correct settings. Then shut down air pressure source. Check
valve will open when pressure drops to between 5 to 20 psig.
(i) Purge all air from test rig and remove pressure switch relief module for final assembly.
(j) If switch (7) required replacement, apply locktite sealant between switch and bracket (8), switch
mounting screws and put. Tighten screws to torque of 4 to 5 pounds-inch.
(k) If new polyolefin sleeving is required for switch wiring, shrink sleeving by applying heat with air gun to
275F until tight. Then pass wires through bushing (10).
(l) After mounting switch bracket (8) onto outlet housing with screws (9), and secure screws with lock
wire.
(m) Cement cover gasket (6) in position and attach cover (3) with three screws (4) and sealing washers
(5). Tighten screws to torque of 1 to 3 pound-inches and secure screws with lock wire.
(n) Insert two locking screws (16). Tighten screws to torque of 10 to 20 pound-inches and secure screws
with safety wire.
(o) Secure jam nut (33) to outlet housing with lock wire.
d. 2nd Stage Relief Valve
(1) Overhaul of the 2nd stage relief valve is not recommended, therefore, reassembly is not applicable.
Perform the following tests and if valve is unoperable replace with new 2nd stage relief valve.
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