TM 9-4120-403-14
Figure 4-34. Time Delay Relay (K9) (Fan Motor)
Inspection
Check relay for cracks, evidence of overheating, and any other visible damage. Replace if damaged.
Test
(1)
Using a multimeter, set on lowest OHMS scale, check continuity.
Terminal 1 (+) to 5 (-) - Continuity should not be indicated.
Terminal 2 to 3 - Continuity should not be indicated.
Terminal 3 to 4 - Continuity should not be indicated.
Terminal 2 to 4 - Continuity should be indicated.
(2)
Replace time delay relay (K9) if it fails any of the above tests.
4-90
