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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:
c. Change intervals
Oil should be changed as a
An oil change directed by
minimum every 200 hrs.
the AOAP is not com-
However, TB43-0210 may justify
pleted, or a change is re-
additional hrs by oil test results.
quired due to dilution or
emulsion.
d. Lubricating oil
Lub-oil filters are changed when
filters
lubricating oil is renewed.
e. Temperature and
Oil pressure gauge installed.
Pressure below 25 PSI.
pressure
Operating pressure at 1450 RPM
30-40 PSI.
f. F.W. expansion
Fill with coolant to within one
Coolant below heat ex-
tank
inch of radiator cap.
changer core.
g. Zinc anode
Inspect and service monthly
renew if deteriorated 50% or
more.
h. F.W. circulating
Check pump for leakage, check
Engine reflects high
pump
temperature for normal opera-
coolant temperature (ex-
tion. Check expansion tank for
ceeds 185 ).
F
loss of coolant and proper circulation.
At 1450 RPM: 160-180oF. Check
i. Coolant
Temperature exceeds
185oF.
temperature
cooling water level and quality of
antifreeze. Refill or replace as
necessary. In winter months
when antifreeze is used make
hydrometer test, and add an-
tifreeze as required. Use ethylene
glycol base antifreeze. Protect to
-32 or as local conditions dictate.
F
j. S.W. circulating
Check for excessive leak off
Engine reflects excessive
pump
temperature of engine. Check im-
high operating tempera-
peller by observing overboard
tures (exceeds 185 ).
F
discharge.
k. S.W. suction and
Remove strainer top with suction
Sea chest is clogged im-
discharge valves.
and discharge valves closed. If
pairing proper engine
SW line strainer
leakage is apparent suction/
cooling.
discharge valve leaks. Check
strainer for foreign objects and
deterioration of strainer basket.
Clean SW strainer and
replace if defective.
Change 1 3-8.1
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