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 TM 55-1905-223-24-18-2
(3) Install gland nuts (28).
(4) Position handwheels (26) on valves and secure handwheels with screws (27).
(5) Position flareless tube tees (24) on panel.
(6) Install tube fitting locknuts (22) and secure flareless tube tees to panel.
(7) Install tube caps (23).
(8) Position pressure lines (31).
(9) Connect tube coupling nuts (19) and (16) to both valves assemblies (25) and flareless tube
tees (24).
(10) Position pressure lines (32).
(11) Connect tube coupling nuts (15).
(12) Position differential pressure gauge (21) on front panel.
(13) Install two hex head capscrews (9) and secure gauge support brackets (11) to pressure
gauge housing.
(14) Install two hex head capscrews (12) from front of panel and aligned with support bracket
mounting screw holes. Secure support bracket to back of panel with two hex self-locking
nuts (10).
(15) Install gland nuts (13) on pressure gauge (21) housing.
(16) Install coupling nuts (14) with attaching seals on tubings (32) at pressure gauge.
(17) Position coupling nuts (14) on pressure gauge.
(18) Position a 5/8 inch wrench on gland nuts (13) to prevent nuts from rotating. Position a
second 5/8 inch wrench on coupling nuts (14) to secure pressure lines to pressure gauge.
(19) Position instrument panel (8) over mounting screw holes on support bracket (20).
(20) Install eight hex head capscrews (17) from front of panel and secure panel to support
bracket with hex self-locking nuts.
(21) At bottom of instrument panel, connect tube coupling nuts (30) to both valve assemblies
(25).
(22) Close inlet and outlet root valves (25) to isolate differential pressure gauge (21) from initial
start-up conditions.
4-31
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