TM9-4120-370-14
TO 35E9-229-1
Preliminary procedure:
Remove lower front panel and junction box cover. (See para 4-46.)
Inspection
a.
(1) Check for loose solder connections.
(2) Check for cracks, evidence of overheating, and other visible damage. Replace if damaged.
b . Removal
(1) Tag and unsolder wire leads.
(2) Using screwdriver and wrench, remove four screws and nuts from time delay relay.
(3) Remove time delay relay.
Test
c.
(1) Using a Multimeter, check continuity
Terminal 1 (identified as + on relay)
Continuity should be indicated
Terminal 2 to 3
Continuity should not be indicated
Terminal 4 to 6
Continuity should not be indicated
(2) Apply 24 volt 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.
Installation
d.
(1)
Using screwdriver and wrench, secure time delay relay to junction box with four screws and nuts.
(2)
Slip heat shrinkable insulation tubing on leads.
4-100
