TM 55-1905-223-24-14
2-24.
Replace Power Converter. (FIGURE 2-18)
This task covers:
a. Removal,
b. Replacement.
INITIAL SETUP
Tools
Equipment Condition
Tool kit, general mechanic's,
TM 55-1905-223-1O, compass
secured.
Tool kit, electrician's,
Materials/Parts
Power converter P/N 1884074
Warning tags, Item 8, Appendix C
REMOVAL
a. On pilothouse IC/ELEX, set circuit breaker No. 1 (MK 27 GYRO PWR CONV UNIT) to OFF. Tag "Out of
Service, Do Not Operate."
b. On pilothouse dc panel, set circuit breaker No. 1F (GYRO PWR TRANSF UNIT) to OFF. Tag "Out of Service,
Do Not Operate."
c.
On power converter, remove cover (1) by removing fourteen hex head screws (5), lockwashers (4), and flat
washers (3).
d. Tag and disconnect cables (8), (9), and (1O) from terminal board (11) TB1.
e. Disassemble two stuffing tubes (7).
f.
Pull cables (8, 9, and 10) from enclosure and remove stuffing tubes.
CAUTION
The next step requires two soldiers because of the weight (26.5 pounds) of the power
converter.
g. Support power converter and remove three mounting bolts (2) and remove unit from bulkhead.
2-65
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