Maintenance GPH-CMD VHF Radio
Page 5-2 BK RADIO
5.3 OVERHAUL
5.3.1 ACCESSORIES
This section contains instructions to assist in determining, by inspection, the condition of GPH-
CMD assemblies. Defects resulting from wear, physical damage, deterioration, or other causes
can be found by these inspection procedures.
A. Capacitors, Fixed
Inspect capacitors for case damage, body damage, and cracked, broken or charred
insulation. Check for loose, broken, or corroded terminal studs, lugs, or leads. Inspect for
loose, broken, or improperly soldered connections. On surface mounted capacitors, be
especially alert for hairline cracks in the body and broken terminations.
B. Capacitors, Variable
Inspect trimmers for chipped and cracked bodies, damaged dielectrics, and damaged
contacts.
C. Chassis
Inspect the chassis for deformation, dents, punctures, badly worn surfaces, damaged
connectors, damaged fastener devices, loose or missing hardware, component corrosion
and damage to the finish.
D. Coils
Inspect all coils for broken leads, loose mountings, and loose, improperly soldered, or
broken terminal connections. Check for crushed, scratched, cut, or charred windings.
Inspect the windings, leads, terminals, and connections for corrosion or physical damage.
Check for physical damage to forms and tuning slug adjustment screws.
E. Connectors
Inspect connectors for broken parts and other irregularities. Inspect for cracked or broken
insulation and for contacts that are broken, deformed or out of alignment. Also check for
corroded or damaged plating on contacts and for loose, improperly soldered, broken or
corroded terminal connections.
F. Covers and Shields
Inspect covers and shields for punctures, deep dents, and badly worn surfaces. Also check
for damaged fastener devices, corrosion, and damage to finish.
G. Flex Circuits
Inspect flex circuits for punctures and badly worn surfaces. Check for broken traces,
especially near the solder contact points.
H. Fuse
Inspect for blown fuse and check for loose solder joints.
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