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 TM 55-1905-222-14
6-26
INSPECT, SERVICE, TEST, REPLACE AND REPAIR KEEL COOLER (Continued).
TESTING
TEST KEEL COOLER
a. Provide seal for one inlet to hold air under
pressure (approximately 20 psi [137 8 kPa]).
b. Prepare fitting for second inlet that has air line
fitting.
c. Install both Inlet fittings
d. Pressurize cooler to approximately 10 psi
(68.9 kPa) and submerge cooler in clear water
not allowing "seals" to be submerged.
e. Observe any air bubble that would indicate a
leak.
f.
If a leak is found, cooler must be replaced.
REPAIR
REPAIR KEEL COOLER
a. Replace keel cooler if leak(s) were found or
keel cooler is damaged beyond repair.
b. Replace all gaskets.
c. Replace all damaged or defective hardware.
d. Replace defective hoses or hose clamps.
e. Replace defective piping.
6-138
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