Steering System Failure.

TM 55-1915-200-10

d. Position TILT/AZIMUTH switch (9) in same

direction as that required to return the compass card to

i. Position LATITUDE control (13) to ship's

the proper heading and release the switch after the

latitude.

compass card begins to rotate slowly toward the desired

heading.

NOTE

e. Allow compass card to rotate 2 or 3 degrees

If step repeaters are used they must

past the required heading, then depress caging control

be synchronized to the compass

on top of the binnacle. Note that CAGED lamp (15)

card before positioning RPTR switch

extinguishes.

(12) to ON.

f. Position MODE SELECTOR switch (7) to AUTO

LEVEL and note that the gyro comes to an approximate

j. Wait 10 minutes after uncaging and position

level as indicated by the Level Meter (3).

RPTR switch (12) to ON if repeaters are used.

g. Position MODE SELECTOR switch (7) to

k. Adjust DIMMER control (6) as required.

MANUAL LEVEL, then operate TILT/AZIMUTH switch

(9) to obtain a zero indication on the Level Meter.

NOTE

h. Position MODE SELECTOR switch (7) to RUN.

The Level Meter indication will vary

from zero at the equator to full scale

2-7.3. Steering System Failure.

near the poles. For example, the

indication at 40 degrees north

latitude will be between + two and

a. Select #2 pump position at the steering console

five scale gradations.

PUMP SELECTOR switch (41, FIGURE 2-222). If

operating on #2 pump, select #1.

2-7.2.2. Emergency Restarting.

b. Attempt to steer the vessel. If unable to steer,

select the nonfollow-up mode with the MODE SELECT

NOTE

switch (42).

The following procedure is to be

used if the gyro has dumped or the

CAUTION

compass must be started with the

If a low hydraulic fluid level alarm is

gyro running.

This condition is

present, steer the vessel with as little

indicated by full scale deflection of

rudder movement as possible. The

the Level Meter and a rapid slewing

low level may have been caused by a

of the compass card.

leak which could deplete the

hydraulic fluid of the power unit in

a. Position MODE SELECTOR (7, FIGURE 2-221)

use.

switch to AUTO LEVEL. Note that compass stops

slewing and settles at a random heading.

c. If steerage is available, dispatch an engineer to

b. Position MODE SELECTOR switch (7) to

determine the cause of the loss of steering.

MANUAL LEVEL.

d. Isolate any leaks by closing appropriate valves.

c. Depress caging control (1) on top of the

binnacle and note that CAGED lamp (15) lights.

2-582