TM 1-1520-238-23
7-303
7.74.
UTILITY HYDRAULIC MANIFOLD RESERVOIR SEAL REPLACEMENT (AVIM) – continued
h. Remove MS21902J4 and HS4508-4C4 unions
and two MS28775-4 packings from ports (19)
and (22).
(1) Discard two MS28775-4 packings.
i. Install plug (18) on drain port (19). Torque plug
(18) to 100 INCH-POUNDS.
(1) Lubricate new packing (20). Use clean
hydraulic fluid (item 92, App F).
(2) Install packing (20) on plug (18).
(3) Torque plug (18) to 100 INCH-POUNDS. Use
torque wrench.
(4) Lockwire plug (18) to adjacent plug (25). Use
wire (item 226, App F).
j. Install check valve (21) on valve port (22).
Torque check valve (21) to 100 INCH-POUNDS.
(1) Lubricate new packing (23). Use petrolatum
(item 138, App F).
(2) Install packing (23) on check valve (21).
(3) Torque check valve (21) to 100 INCH-
POUNDS. Use torque wrench.
k. Remove caps from all ports.
l. Inspect (QA).
END OF TASK
M04-3061-12
18
20
19
25
M04-3061-13
21
23
22
