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 TM 55-1925-273-10-1
0067 00
STERN TUBE SEAL
Normal Operations
1.
Stern tube seal operates without operator adjustment. During normal operations. a continuous sea water
flush to the seal cavity must be maintained at a pressure of about 10 PSIG.
2.
Valves GS-42 and GS-43 should always be open.
Emergency Operations
1.
Disable start capability of main propulsion engine.
2.
To prevent uncontrolled leakage, the shaft must be stopped and the inflatable seal pressurized. Connect
hose from reducing station (CA-31) to quick disconnect for seal and open (CA-23) ships service air isola-
tion valve pressurize to 25 PSI.
3.
See John Crane Technical Manual for instructions to convert sealing arrangement to a stuffing box in case
of emergency.
Placard 26. Stern Tube Seal
0067 00-34
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