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 TM 5-4120-393-14
4-50. Time Delay Relay (K6) (cont)
INSPECTION
1.
Check for loose, corroded, missing, or broken terminal connections.
2.
Check relay for cracks, evidence of overheating, and other visible damage and replace if damaged.
TESTING
1.
Using a multimeter, check continuity.
a. Terminal 1 to 5 - continuity should be indicated.
b. Terminal 2 to 3 - continuity should not be indicated.
c. Terminal 4 to 6 - continuity should not be indicated.
2.
Apply 24 volts dc to terminals 1 (+) and 5(-) and check continuity across terminals 2 and 3 and terminals 4 and 6.
After a 30 second time delay continuity should be indicated.
3.
Replace time delay relay if it fails any of the above tests.
INSPECTION
1.
Using screwdriver and wrench, secure relay (6) with four screws (3), lock washers (4) and nuts (5).
2.
See tags and wiring diagram, para 4-13, and connect wire leads.
3.
Remove tags.
4.
Using screwdriver, install cover (2) with eight screws (1).
NOTE
FOLLOW ON MAINTENANCE:
1. Install junction box number two. See para 4-46.
2. Connect power.
4-118
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