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Operator/Crew Preventive Maintenance Checks and Services
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TM-11-5815-206-12 Teletypewriter Sets AN/PGC-1 AND AN/PGC-3 and Teletypewriters TT-4A/TG TT-4B/TG TT-4C/TG TT-335/TG TT-537/G TT-698/TG Manual
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Equipment Performance Checklist
TM 11-5815-206-12/TO 31W4-2PGC1 -61
4-5. Operator/Crew Preventive Maintenance
Checks and Services Chart
B-- Before
D During
Equipment is
Interval
Procedures - Check for and have
Not Ready/Available
Item
Item to be
repaired or adjusted as
No.
necessary
B
D
If:
Inspected
1
Mission
Available equipment is
Check for completeness and satisfactory
q
insufficient to support
Essential
condition of the equipment. Report
the combat mission.
Equipment
missing items.
Teletypewriter fails to
2
Teletypewriter
Routine operation of the teletypewriter.
q
communicate properly.
Set
W h e n necessary, use gloves
4-6. Organizational Preventive Maintenance
avoided.
w h i c h the solvent cannot penetrate. If
Checks and Services Chart
W Weekly
t h e solvent is taken internally, consult
a physician immediately.
Interval
Items to be
Item
Procedures
w
Inspected
No.
b. Remove grease,  fungus and ground-in dirt
from the cases; use a dampened cloth (not wet)
Ground
Check ground rod for firm
1
q
Rods
connection in dampened
with trichloroethane.
earth and that all connec-
tions are clean and tight.
CAUTION
Lubrication
Check lubrication chart
2
q
Require-
Be careful when cleaning around plugs and
ment
alert direct support
j a c k s ; dirt forced into jacks will cause
when lubrication is
malfunctions.
required.
Perform operational
Teletype-
3
c. Remove dust and dirt from plugs and jacks
q
checks as described in
writer Set
with a brush.
CAUTION
4-7. Cleaning
Do not press on meter faces (glass) when
cleaning; the meter may become damaged.
Inspect the exteriors of the teletypewriter set and
the teletypewriter.
T h e exterior surfaces and
d. Clean the front panels, meter, and control
w i n d o w should be clean, free of dirt, grease,
switches; use a soft clean cloth. If dirt is difficult
corrosion, and fungus.
to remove, clean with mild soap and water.
a. Remove dust and loose dirt with a clean soft
e. Clean rust and corrosion from metal surfaces
cloth.
b y lightly sanding them with fine sandpaper.
Brush two thin coats of paint on the bare metal to
WARNING
p r o t e c t is from further corrosion. Refer to ap-
Adequate ventilation should be provided
plicable cleaning and refinishing practices specified
w h i l e using  T R I C H L O R O T R I F L U O R O -
in TB 43-0118.
E T H A N E . Prolonged breathing of vapor
4-8. Equipment Performance Checklist
s h o u l d be avoided.
The solvent should
not be used near heat or open flame; the
Check the operation of the teletypewriter as in-
p r o d u c t s of decomposition are toxic and
structed in the following checklist. Perform the
irritating.
Since
checks in the sequence listed.
If the corrective
TRICHLOROTRI-
measures do not remove the trouble, higher
FLUOROETHANE dissolves natural oils,
category of maintenance is required.
p r o l o n g e d contact with skin should be
4-3/(4-4 blank)
Change 2

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