TM 11-6625-828-12
Figure 4-1. Lubrication of Test Set, Radio AN/ARM-5A.
b. Remove grease, fungus, and ground-in dirt from
4-9. Lubrication
the case; use a cloth dampened (not wet) with
trichloroethane.
NOTE
c. Remove dust or dirt from plugs, connectors, and
No lubrication, other than of the
jacks; use a stiff-bristled brush.
attenuator gear and rack, is required
for maintenance of Test Set, Radio
CAUTION
AN/ARM-5A.
All bearings are
Do not press on the meter faces
lubricated and factory-sealed before
(glass) when cleaning; the meters
installation.
may become damaged.
a. The symbol A stands for a period of 1 year. A year
d. Clean the front panel, meters, and control and
consists of 360 days of normal 8-hour operation. When
switch knobs; use a soft, clean cloth. If dirt is difficult to
the equipment is operated more than 8 hours a day,
remove, dampen the cloth with water; if necessary, use
adjust the lubrication interval accordingly. For example,
mild soap.
when the equipment is operated 24 hours a day instead
e. Remove the case from the chassis and blow out
of 8, lubricate the attenuator gear and rack quarterly (Q)
all accumulated dust with low-pressure compressed air.
instead of annually.
4-8. Touchup Painting Instructions
WARNING
Remove rust and corrosion from metal surfaces by lightly
The fumes of trichloroethane are
sanding them with fine sandpaper. Brush two thin coats
toxic. Provide thorough ventilation
of paint on the bare metal to protect it from further
as exposure of the fumes to an open
corrosion. Refer to applicable cleaning and refinishing
flame converts the fumes to highly
practices specified in TM 9-213.
toxic, dangerous gases.
b. Turn the SG-66B/ARM-5 upside down on the
bench to reach the gear and rack. Clean the gear and
rack teeth to be lubricated with
4-4
