TM 5-4310-356-14
Table 5-1. Troubleshooting (Cont'd)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Step 2. Check magnetic starter switch to see if it is defective. Use compressed air and remove all dust or dirt
from magnetic starter components, check continuity of heater coil, operating coil, relay overload, contact carrier and
interlock assembly. Check on-off switch continuity and stem action. If the magnetic starter switch and on-off switch
checks out, proceed to Step 3. If not, replace the magnetic switch as follows:
a. Disconnect main power source.
b. Remove screw from bottom of magnetic starter box cover and remove the cover.
c. Tag and disconnect all wiring.
d. Use figure 5-2 as a guide and disassemble the magnetic starter assembly as follows:
(1) Remove connector (6) and (11) from the magnetic switch box.
(2) Remove nut (1), lockwasher (2), flatwasher (3), and capscrew (4) and remove the control
box.
(3) Remove contact cap (12), contact kit (13), contact carrier (14), operating coil (15), coil heater
(16), overload relay (17), and interlock assembly (18).
(4) Replace any defective part.
(5) Replace interlocking assembly (18), overload relay (17), coil heater (16), operating coil (15),
contact carrier (14), contact kit (13), and contact cap (12).
(6) Replace the magnetic control box with capscrew (4), flatwasher (3), lockwasher (2), and nut
(1).
(7) Replace connector (11) and (6) to the magnetic control box.
e. Reconnect all wiring.
f. Replace magnetic starter box cover and install capscrew.
g. Connect main power source.
5-4
