TM 55-1905-223-24-14
REPLACEMENT
a.
Position gyro control and power assembly (13) on mounting foundation.
b.
Remove eight screws (8) securing rear panel (7) to cabinet (13) and pull panel back for access to inside of
cabinet.
c.
Assemble stuffing tubes (4) on cables (1, 2, 3 and 5).
d.
Route cables (1, 2, 3 and 5) inside cabinet and connect leads to terminal board TB-1. Remove tags.
e.
Dress slack leads of cables inside cabinet.
f.
Replace plate (10) holding cable (3) and jack (9) J1 to rear cabinet frame member and secure with four
screws (12) and lockwashers (11).
g.
Secure rear panel (7) to gyro control and power assembly (13) with eight screws (8).
h.
Align gyro control and power assembly (13) mounting holes on mounting foundation and secure with four
bolts (6) through cabinet base.
i.
Replace gyro compass (paragraph 2-12).
j.
On pilothouse IC/ELEX panel, set circuit breaker No. 1 (MK 27 GYRO PWR CONV UNIT) to ON. Remove
OUT OF SERVICE tag.
k.
On pilothouse dc panel, set circuit breaker No. 1F (MK 27 CYRO PWR XFR UNIT) to ON. Remove OUT OF
SERVICE tag.
l.
Start compass (TM 55-1905-223-10).
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