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 TM 55-1905-223-10
Table 2-2. Operator/Crew Preventive Maintenance Checks and Service - CONT
B - Before
D - During
A - After
W - Weekly
M - Monthly
INTERVAL
PROCEDURES
EQUIPMENT IS
ITEM
ITEM TO BE
CHECK FOR AND HAVE REPAIRED
NOT READY/
NO
B
DA W M
INSPECTED
OR ADJUSTED AS NECESSARY
AVAILABLE IF:
29
Engine Control
Check unit for leaks and
Unusual noises.
l
l
l
Room - Air
unusual noises.
Handling Unit
Check exterior of unit for
l
l
l
wear, damage and corrosion.
Air Grille
Check air grille for dust or
l
l
dirt buildup and restrictions.
Filter
Check filter for dust, lint and
l
l
dirt buildup.
30
Gyro Compass
Follow-Up Alarm
Check that light is OFF.
Power loss to
l
Lamp
compass.
Caged lamp
Check that light is OFF.
l
Latitude Control Check that control is set at
local latitude.
North-Side
Check that switch is set at
l
(N-S) Switch
proper latitude.
Level Meter
Normal settled tilt indication
l
Azimuth Card
Check that azimuth reading is
l
Reading
within two degrees when
settled.
Card Window
Check for cleanliness.
l
Fluid Level
Check that fluid has no bubbles
Bubbles
Viewed in Window present. Refer to unit
present.
maintenance.
Master Compass
Check for oil seepage around
Any class of
l
any seam or seal. Refer to
oil leakage.
unit maintenance
Shock Mounts
Check that binnacle moves
l
freely in its shock mounts.
2-228
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