TM 1-1520-238-23
9-219
9.59.
AFT AVIONICS BAY ISOLATION TRANSFORMER FILTER BOX DISASSEMBLY/ASSEMBLY
(AVIM) – continued
j. Install bonding screw (8) on cover (1).
(1) Install screw (8) through washer (7), cover
(1), washer (7), and lockwasher (10).
(2) Hold screw (8). Install nut (9).
k. Install cover (1) on filter box (2).
(1) Install electrical lead (5), washer (7), and
locknut (6).
(2) Perform electrical bond check on attaching
hardware (TM 55-1500-323-24).
(a) Bond shall be 0.0025 OHM or less. Use
ohmmeter.
(3) Seal attaching hardware. Use sealing
compound (item 169, App F).
(4) Install eight screws (3) and washers (4).
(a) Tighten screws (3) evenly until cover
meets gasket.
(b) Tighten screws (3) one half turn.
(5) Apply locking compound to head of screws
(3). Use sealing compound (item 174,
App F).
l. Edge seal cover (1) and box (2). Use adhesive
(item 23, App F).
m. Inspect (QA).
n. Perform DASE maintenance operational
check (TM 1-1520-238-T).
END OF TASK
M04-4203-18
3
4
8
7
1
7
10
7
6
9
5
2
