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 TM 55-1925-204-12
Table 3-1. 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:
prescribed level (level with full
cap). Start air compressor and
jam air to 250 psi. Automatic
regulator will stop air compressor;
bleed air by hand to ensure regulator
cuts in the compressor within the
specified limits. Check low pressure
alarm for proper operation.
41
Sea chests and S.W.
Check S.W. strainer for foreign
Sea chests openings are
strainers
bodies, and sea growth. Ensure
40% or more restricted.
strainer baskets are intact. Place
zinc in baskets affixed by machine
screw to prevent deterioration. Back
blow sea chests to remove marine
growth.
42
Main propulsion
Ensure that the engine idles and
Engine fails to start
engine
responds to the controls satisfac-
and/or reverse. Engine
tory by accelerating and
fails to come up to rated
decelerating through full
RPM running free. Engine
operating range, ahead and
reflects no lubricating
astern. Analyze the engine per-
oil pressure. Engine
formance: listen for unusual
operating with excessive
noise, lack of power, flat spots,
high temperatures.
unusual exhaust smoke and
temperature. Be alert for im-
proper lubricating oil pressure,
and temperature.
43
Starting main pro-
Ensure engine is prelubricated
No lubricating oil
pulsion engine
and blown down prior to starting
pressure indicated on oil
engine. Ensure lubricating oil is
pressure gauge. No F.O.
up to prescribed level on dip-
pressure evidenced on
stick. Ensure FW and SW suction
F.O. pressure gauge.
and discharge valves are open.
Ensure FW pump is properly
vented. Close blow down valve,
set fuel rack and start engine.
Check level of coolant in expan-
sion tank. Ensure engine
registers lubricating oil pressure.
If no lubricating oil pressure is
evidenced/indicated, stop engine
immediately. Check F.O.
pressure on rollover for positive
reading.
Change 1 3-8.5
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