MIL-DTL-24784/12B(SH)
CHART 5-1
LUBE OIL SYSTEM TROUBLES
IMMEDIATE
PROBABLE
SYMPTOMS
ACTION
CAUSE
REMEDY
1. Check the system to
1. Lube-oil pump shut
1. Low-lube alarms
1. Stop this shaft
determine the cause, and
down. (pump or cut-in
sounds.
and engage shaft
then correct.
switch failure).
lock.
2. Low of lube-oil
2. Start standby
2. Broken pipe.
2. Locate and repair any
pressure.
lube-oil pump.
leaks.
3. Clogged strainer.
3. Shift duplex oil strainers.
4. Insufficient oil in
4. Check oil level; replenish
system.
as necessary.
5. Alarm setting
5. Reset alarm to correct
incorrect.
value.
Chart 5-2
BEARING TROUBLES
1. Inspect turbine bearings
1. Foreign matter
1. Slow down and
1. High bearing
and accessible reduction gear
present, or local loss of
keep turning to avoid
temperature/hot
bearings. Take bearing-wear
oil
freezing babbitt to
bearing.
measurements.
shaft while bearing &
journal cool. Then
2. Wiped bearing.
2. Inspect oil strainers for
stop and replace
babbitt particles.
bearing.
3. Replace bearings as
required.
4. If several bearings are
wiped, do not resume
operation until complete
inspection and repair have
been made.
FIGURE 12-6. Trouble analysis chart. (Sample)
30
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