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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:
low pressure dry air. Renew
brushes if they are worn to one-
half of original length. Inspect
connections and wiring for in-
secure mounting, damaged or
frayed insulation.
38
Drip pans
Ensure drip pans are in place
under generator engines. Check
fore and aft crankshaft seals for
leaks. Check airbox drain for oil
leaks. Ensure valve and hand
hole inspection covers do not
leak. Check oil connections to
lubricating oil pressure gauge for
oil leaks.
39
Ship service switch
Inspect for broken glass, bent
board: (power
pointers, dirty or corroded ter-
distribution)
minals and for accuracy.
a. Circuit breakers
Inspect for proper operation and
Circuit breakers are
overload trip.
defective.
b. Power available
Ensure the signal light indicates
light
by illuminating when power is
available from generators.
c. Voltmeter
Ensure the selector switch is in
Voltmeter is defective and
proper position, indicates meter
does not indicate on line
on line. Ensure the prescribed
voltage.
voltage level (120 VDC) is
registered.
d. Calibrating
The calibrating voltmeter selec-
tor switch, should be utilized to
check online voltage of operating
generator, and check accuracy
periodically of functioning
voltmeters.
e. Ammeter
Ensure the ammeter functions
Ammeter is inoperative.
correctly, and operator does not
redline generator (exceed 333
amps).
Change 1 3-8.3
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