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 TM 55-1905-220-14-4
3-56. SHAFT SEALS - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
DISASSEMBLY
WARNING
Inflate the inflatable sealing ring BEFORE any work is performed on the split shaft
seal. FAILURE TO DO SO CAN RESULT IN EXCESSIVE FLOODING WHICH
CAN LEAD TO LOSS OF LIFE AND LOSS OF THE LANDING CRAFT.
3. Inflatable
Carbon
a. Check that all hoses
Refer to para-
housing
dioxide
are connected.
graph 3-55 for
ring
tank
inflation pro-
(CO2)
cedures.
b. Open CO2 tank valve
to inflate the inflat-
able sealing ring.
c. Inflate ring with 125
Refer to
to 175 psi (169.5 to
237.3 kpa) pressure
Main-
from CO2 tank.
tain pres-
sure.
CAUTION
Do not exceed 200 psi (271.2 kpa) in inflatable sealing ring.
WARNING
If inflatable sealing ring fails to inflate: STOP IMMEDIATELY . DO NOT PROCEED.
4. Shaft
a. Outlet
Turn clockwise to close.
seal
gate
tank
valve
b.
Inlet
Turn counter-clockwise
valve
to close.
3-992
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