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 TM 55-1905-223-24-18-1
Repair Interface Unit Assembly.
2-139.
This task covers: a. Disassembly, b. Repair, c. Assembly.
INITIAL SETUP
Tools
Equipment Condition
T o o l kit, electrician's,
Electrical power to controls system
secured and tagged "Out of Service -
Do Not Operate" at ship service
Materials/Parts
switchboard (TM 55-1905-223-10).
Electromagnetic relay
P/N 91-1000-000
Electromagnetic relay
P/N 91-1011-000
Warning tags, Item 1, Appendix C
DISASSEMBLY
a.
Loosen captive screws (1) and open cover (2) on enclosure (3).
Remove relay retainers (4, 5).
b.
Remove electromagnetic relays (6, 7).
c.
Repair at this level of maintenance is by replacement of electromagnetic relays
(6, 7).
ASSEMBLY
a.
Install electromagnetic relays (6, 7).
I n s t a l l relay retainers (4, 5).
b.
c.
Close cover (2) on enclosure (3) and tighten captive screw (1).
d.
Remove tag and turn on electrical power to interface unit assembly.
Change 1
2-532
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