TM 10-4610-239-24
TM 08580B-24/3
DISASSEMBLY. (Cont)
f.
For K3 thru K6, loosen four screws (13) and remove four stationary contact assemblies (14). For K7, remove two
screws (13) and remove two stationary contact assemblies (14).
g.
Remove two screws (15). Remove upper base structure (2) and crossbar (12).
h.
Remove two screws (16), two spring supports (17) with springs (18), lower base structure (19), coil (20), yoe (21),
k
and pad (22) from mounting bracket (23).
i.
For K3 thru K6, remove six screws (24) and three heaters (25) from overload relay (3). For K7, remove four
screws (24) and two heaters (25) from overload relay (3).
CLEANING.
WARNING
Dry-cleaning solvent AA 711 TYPE I & II is highly toxic and can ignite
organic materials, nitrates, carbides, and chlorates. Wear eye, skin, and
respiratory protection. Use in a well-ventilated area.
a.
Using a soft brush and dry-cleaning solvent AA 711 TYPE I & II re ove dirt, dust, and contaminants from metal
m
and plastic parts.
b.
Remove dirt, carbon, and dust from electrical contacts.
c.
Clean threads of parts and hardware.
d.
Allow parts to air dry.
INSPECTION .
a.
Inspect coils for breaks, cracks, and heat damage. Replace as required.
NOTE
Replace all contacts and springs as a group to prevent misalignment.
b.
Inspect electrical contacts for pits or burning. Replace as required.
c.
Inspect contact springs for broken or deformed coils. Replace as require .
d
d.
Inspect mounting bracket for damage. Replace as required.
e.
Inspect all hardware for damaged heads or threads. Replace as required.
WARNING
To provide continued protection against fire and shock hazard, replace
the complete overload relay if burnout of a current heater element
occurs.
f.
g.
Inspect overload relay reset lever for freedom of movement. Replace overload relay if movement is impaired.
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