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 TB 740-97-4
systems will be preserved In accordance with the applicable instructions for such items.
57. Machine Tools. Machine tools will be preserved in accordance with MIL-STD-107.
58. Galley Equipment. Preservatives will be applied to those surfaces of galley equipment which are vulnerable to corrosion.
Galley equipment such as food handling and processing equipment and mess gear will be preserved using type P-14 preservative.
Refrigerators and stoves will be cleaned using the most applicable process of MIL-P-116 and will be opened for ventilation. Oil
burners of galley ranges will be preserved in accordance with paragraph 47. Firesides of stoves will be coated with type P-10
preservative lubricating oil, type I or II, grade 30.
59. Seat Cushions and Backs. Seat cushions and backs will be wrapped or shrouded with 6 mil thickness of polyethylene
conforming to type I, grade A, finish 2 of FED-L-P-378. Cushions easily removed will be wrapped and reinstalled. Seat backs or
cushions not readily removable will be shrouded and the shroud secured in a manner to preclude its loss or damage.
60. Sanitary Facilities. Ferrous metal lavatory, shower and toilet piping not connected to the potable water system will be flushed
with type P-3 preservative and thoroughly drained. Care will be taken that the preservative does not remain in traps. Disassembled
lines, traps and drain plugs removed to facilitate draining will be reinstalled.
61. Fixed Fire Fighting System. All ferrous metal surfaces will be coated with type P-11 preservative. Release mechanism of the
system will be wired to prevent accidental discharge.
62. Unprotected Exposed Metal Surfaces and Linkages.
a. Precision. Coat unprotected ferrous metal machined precision surfaces and linkages with type P-6 or P-11 preservative
compound.
b. Non-Precision. Coat unprotected ferrous metal non-precision surfaces and linkages with type P-1 preservative.
62.1 Thru Hull Fittings/Sea Connections. Thru hull fittings/sea connections for dry stored vessels will be preserved as follows:
a. Interior surfaces of thru hull fittings/sea connections shall be cleaned and free of dirt, rust, scale, and other foreign matter.
Cleaned surfaces shall be preserved with type P-2 or P-3 preservative.
b. The thru hull fittings/sea connections at the hull exterior will be masked with pressure-sensitive tape, conforming to PPP-T-
60, Type IV and coated with strippable and bituminous coating. The strippable and bituminous coating shall extend beyond the
edges of the tape. A solid wood plug or blank may be used in place of the tape at the discretion of the storing activity.
62.2 Door Hinges and Dogs. Door hinges, fasteners and dog bearings shall be thoroughly coated with type P-2 preservative and
the excess wiped away.
Section II. PRESERVATION WITH DYNAMIC DEHUMIDIFICATION (W/O COCOON)
63. General.
a. This section contains instruction for preservation with dynamic dehumidification without cocoon. This method of
dehumidification will be accomplished by sealing of zones and installation of dynamic dehumidification equipment, as outlined in
chapter 6.
b. Preservative with static dehumidification is a method that may be required. In some isolated instances where dynamic
dehumidification is not feasible. Since a satisfactory barrier can seldom be created around fixed equipment of vessels, this type of
dehumidification is not recommended for general use.
64. Engines.
a. Combustion Chambers. When preservation of combustion chambers is specified, the amount of preservative lubricating oil
to be sprayed into each cylinder will be determined as follows.
(1) One-half ounce for each cylinder with piston displacement up to 25 cubic inches.
(2) One ounce for each cylinder with piston displacement between 25 and 50 cubic inches.
(3) One and one-half ounces for each cylinder with piston displacement between 50 and 75 cubic inches.
(4) Two ounces for each cylinder with piston displacement over 75 cubic inches.
CAUTION
Precaution will be taken to assure that the amount of oil injected into the combustion chambers and manifolds will not
result in hydrostatic lock-up of the engine. Prior to preserving additional engines, the first engine preserved will be
allowed to stand idle for 12 hours. The engine crankshaft will be rotated manually, or by the starting motor if manual
rotation is not possible, to assure that the amount of oil injected into the combustion chambers and manifolds permit
free rotation of engine.
Change 2 4-10
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