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 TM 55-1925-273-10-1
OPERATOR'S MANUAL
INLAND AND COASTAL LARGE TUG (LT)
THEORY OF OPERATION
STEERING SYSTEM
GENERAL
The steering gear system is an electrically driven, hydraulically operated system (figure 1) that positions the rudders in
response to steering commands.
OIL RESERVOIR
DP
(IN FAN ROOM MN DK.)
RUDDER ACTUATOR
1160 PSI
(80 BAR)
SH-9
A
SEE
SHEET
2
B
C
SH-8
SH-7
EMERGENCY
HAND PUMP
SH-1
SH-3
MANEUVERING
VALVE 1
SH-5
1235 PSI
(85.2 BAR)
M
F
PUMP UNIT 1
Figure 1. Steering Gear Hydraulic System Schematic (Sheet 1 of 2)
0024 00-1
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