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 TM 55-1925-204-12
Table 3- Operator/Crew Preventive Maintenance Checks and Services - Continued
Tug Diesel Large Design 3006
B - Before
A - After
M - Monthly
D - During
B/A - Biannually
Q - Quarterly
Intervals
Item
Item To Be
Procedure
Equipment Will Be Reported
No.
BDA
M Q B/A
Inspected
Not ready/Available If:
generators) for deterioration and
cracks. Empty the carbon collec-
tor on the exhaust silencer. Check
flapper valve for free movement
and closing post operation.
20
Main mast and spar,
Inspect for structural damage.
Mast and spar is damaged
stays, shrouds,
Ensure all mast lights are intact
to extent that radar and
signal and naviga-
and functional. Ensure signal
lights are adversely af-
tion lights, whistle,
halyard is installed and func-
fected.
radar antenna and
tional. Ensure radar guide wave
wave guide.
is properly secured to mast and is
watertight. Check mast for rust
and deterioration. Visually in-
spect ship's whistle and air supp-
ly lines for damage.
21
Navigation lights
Check navigation lights for
Navigation lights are in-
satisfactory operation. Check
operative.
running light lenses for cracks
and proper insulation. Ensure
running, mast head and range
light are bright lights. Check
navigational light control panel
test circuit for loose connections
and ground.
22
Radion, ADF and
Inspect for damage and deteriora-
Damage impairs radio
I
IFF antenna
tion. Ensure insulators and
operation, no vessel com-
securements are properly
munication./contact with
secured, free of rust and corro-
navigation aids.
sion.
23
Search light
Check search light for proper
operation and ensure stuffing
tube does not leak from flying
bridge to pilot-house.
24
Windshield wipers
Ensure blades are free of rust and
and motors
check rubber for dry-rot. Check
motors for overheating and pro-
per operation. Check for crack,
broken or missing glass. Check
for inoperable opening or closing
mechanism, and obstructed case-
ment drains.
3-6
Change 1
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