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 TM 55-1905-220-14-11
5-162. MACHINERY AND KEEL COOLERS - MAINTENANCE INSTRUCTIONS
(Continued).
LOCATION
ITEM
ACTION
REMARKS
REPAIR OR REPLACE (Cont)
a. Damaged keel cooler: In the event of accidental damage in use, it is recommended that the 'following materials
and steps be taken to make minor shipyard repairs.
(1) Brazing: Drain the keel cooler before brazing. Make certain that the joint or area to be brazed is thoroughly
cleaned, using a good degreasing solvent followed by wire brushing. The silver alloy used in the manufacture of keel
coolers is "Handy & Harman", 3/32" diameter Easy Flow No. 4 wire, having a melting point of 1160 . Use "Handy &
F
Harman" Flux, low temperature brazing type. Source of brazing wire and flux is HANDY & HARMAN, 850 third Avenue,
New York, New York 10022 U.S.A. who have many distributor outlets.
(2) In the event the tubes are accidentally bent and out of alignment, they can be straightened by using a' hard
wood block and mallet. Keel coolers are constructed of ductile materials not subject to fracture.
b. Temporary repair:
(1) For temporary repairs, an epoxy compound similar to Devcon UW for above and under water repairs or Red
Hand for above water repairs may be used when liberally applied.
(2) Before applying the epoxy compound, the surface must be clean and any internal pressure on the keelcooler
must be removed.
(3) Devcon UW is available from Devon Corporation, Danvers, Massachusetts 01923. Red Hand is available
from International Paint Company, New York, New York.
5-1653/(5-1654 blank)
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