TM 5-4310-384-13
c.
Separate coil (6) from base plate (5) by pulling back on clips (7).
d.
Remove magnet (8) from coil (6).
e.
Holding contact board (4) in left hand, press on crossarm as far as it will go while you grasp the clip (9) and lift
and slide the armature (10) from coil (6).
f.
Tag and remove relay wires (11) at X1 and X2.
g.
Loosen three setscrews (12) and remove overload relay (13) from contact board (4).
NOTE
Relay(13) is not repairable and should not be disassembled. Replace entire relay as necessary.
h.
Remove cross arm assembly (14, 15, 16) and springs (17) from board (4).
CLEANING AND INSPECTION.
WARNING
Clean motor starter components with compressed air no greater than 30 psi. Eye protective equipment
must be worn when cleaning with compressed air.
a.
Use compressed air no greater than 30 psi to blow out dirt from all motor starter components. Wipe with clean
rag.
b.
Inspect all non-metal components for cracks. Replace as necessary.
NOTE
Contacts will discolor and pit in use.
c.
Inspect contacts (15) for excessive pitting or burning. Replace as necessary.
d.
Inspect overload relay (13) for cracks or melted overload coils. Replace entire relay as necessary.
REASSEMBLY.
a.
Install contacts (15) on crossarm (14).
b.
Assemble crossarm (14), crossarm base (16), and springs (17) to contact board (4).
c.
Install spring clip (9) and armature (10).
d.
Install overload relay (13) to contact board (4). Tighten setscrews (12).
e.
Connect two relay wires (11) at X1 and X2.
f.
Slide magnet (8) into coil (6).
g.
Install coil (6) into base plate (5). Make sure retaining clips (7) are engaged.
h.
Position contact board (4) onto base plate (5) and secure with two screws (3).
i.
Install cover (2) and tighten screws (1).
FOLLOW-ON MAINTENANCE.
Install motor starter. Refer to paragraph 3-18.
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