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 TM 55-1905-242-14
0150 00
ADJUST (continued)
10. After tightening the locknut (5), check the pressure again. If the pressure is still 1000 lb/in (68.9 bar), proceed to the next
step. If the pressure is not 1000 lb/in (68.9 bar), repeat steps 6-9, taking care not to move the adjusting screw (7) while
tightening the locknut.
7
5
6, 12
11. OPEN the port isolation valves (1 and 2) and leave the port bypass valves (3 and 4) CLOSED.
NOTE
Whenever one counterbalance valve is adjusted, the other must be adjusted. Proper
counterbalance valve adjustment can only be obtained by adjusting both valves.
12. Isolate the starboard steering cylinder by closing the starboard isolation valves (8 and 9).
13. Check that the normally closed bypass valves (10 and 11) for the starboard steering cylinder are CLOSED.
14. Turn the helm wheel in the pilothouse slowly in one direction while observing the steering system hydraulic pressure
gauge. Slowly turn the wheel throughout the adjustment procedure.
15. Notify the crewmember in the lazarette of the pressure reading.
16. Loosen the locknut (5) on the starboard counterbalance valve (12) adjusting screw (7).
17. If the pressure reading is 1000 lb/in (68.9 bar), turn OUT the adjusting screw (7) until the pressure drops below
1000 lb/in (68.9 bar).
18. Slowly turn the adjusting screw (7) IN until the pressure reads 1000 lb/in (68.9 bar).
19. When 1000 lb/in (68.9 bar) has been reached, tighten the locknut (5) snugly while holding the adjusting screw (7)
stationary.
20. After tightening the locknut (5), check the pressure again. If the pressure is still 1000 lb/in (68.9 bar), proceed to the next
step. If the pressure is not 1000 lb/in (68.9 bar), repeat steps 16-19, taking care not to move the adjusting screw (7) while
tightening the locknut.
21. OPEN the starboard isolation valves (8 and 9) and leave the port bypass valves (10 and 11) CLOSED.
END OF WORK PACKAGE
0150 00-2
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