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 TM 55-1915-200-10
2-5.8.8. Port or Starboard to Neutral Operation at PHC
.
c. Increase BOW THRUSTER control lever (28)
movement to new direction and desired engine rpm.
a. Move BOW THRUSTER control (6, Sheet 1 of
2) to low idle position.
2-5.8.6. Shifting Control Air to PHC.
NOTE
b. Hesitate 2 seconds and then move BOW
THRUSTER control to NEUTRAL position.
To allow bow thruster operation at
the PHC, control air must be directed
2-5.8.9. Reversing Direction Operation at PHC.
to the console.
CAUTION
a. Position CONTAIR TRANSF actuator (75, Sheet
Never reverse direction of bow
6 of 12) at ERC to forward position.
thruster at full engine rpm. Damage
to marine gear will result.
b. At PHC, push down on TRANSFER VALVE (19,
a. Move BOW THRUSTER control (6, Sheet 1 of
2) to low idle position (1000 rpm).
2-5.8.7. Neutral to Port or Starboard Operation at PHC
.
CAUTION
b. Hesitate 2 seconds, then move BOW
THRUSTER control (6 to new position through
Do not use the bow thruster until
NEUTRAL.
the thruster tunnel is completely
submerged.
c. Increase BOW THRUSTER control movement
to desired engine rpm.
Moving the BOW THRUSTER
control lever either PORT or
2-5.8.10. Shutdown at PHC.
STARBOARD in the first 15 degrees
of either quadrant will engage the
a. Check that BOW THRUSTER control (6, Sheet I
marine gear. Increasing control lever
of 2) is in NEUTRAL position.
movement beyond 15 degrees will
cause
throttle
increase
b. Pull up on TRANSFER VALVE (19, Sheet I of
correspondingly to maximum control
2).
lever travel.
2-5.8.11. Shutdown at ERC.
a. Check BOWTHRUST TACH indicator (FIGURE
a. Check that CONTAIR TRANSF actuator (75,
rpm).
b. Move BOW THRUSTER control (6, Sheet 1 of
b. Check that BOW THRUSTER control lever (28,
2) to PORT or STARBOARD direction and pause 2
Sheet 5 of 12) is in NEUTRAL position.
seconds to allow marine gear to fully engage.
c. Increase BOW THRUSTER control movement
to desired engine rpm (maximum 2800).
2-405
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