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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:
f. Ammeter steering
Inspect ammeter for overload of
gear
steering pump. See rated amperage
on pump name plate data. Check
motor for heat by touch if excessive
amps are registered.
g. Ground Light
Inspect for proper operation, in-
dicated by change in brilliance
when ground is present. Find
ground by isolating individual
circuits.
h. Field rheostat
Ensure rheostat is functioning
Rheostat malfunctions.
properly by exercising field
voltage prior to closing circuit
breaker.
I
i. Disconnect
Ensure disconnect switch is func-
switch
tional by exercising closed and
opened positions. Check with cir-
cuit breaker closed.
j. Equalizer switch
Check with switch closed.
Equalize load between generators
in loop. When load diminishes
and one generator can handle the
demand, transfer load to desired
generator and open equalizer and
circuit breaker switches, on
generator coming off line.
k. Share power light
Ensure the light indicates when
shore power has been energized,
and is available at the switchboard.
40
Air Compressor
Check dry type air cleaner, and
back blow with low pressure air,
if required (dirty). Compressor oil
should be changed every 500 hrs
or every 90 days, whichever oc-
curs first. Use OE/HDO 30 six
Qts. Check drive belts for wear
and replace as a set if required.
Ensure air compressor discharge
valve is open, and oil is up to
3-8.4
Change 1
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