TM 55-1520-240-23-10
13-56
INSTALL HEATER CONTROL BOX RELAYS
(Continued)
13-56
INSTALL AIR PRESSURE RELAY
7.
Position air pressure relay (11) with X2 terminal
up, in box (7). Install two screws (12) and
washers (13).
8.
Remove tape from four wires (14).
9.
Connect four wires (14) to relay (11). Install four
screws (15) and washers (16). Remove tags.
INSTALL OVERHEAT RELAY
10.
Position overheat relay (17) with X1 terminal up,
in box (7). Install four screws (18) and washers
(19).
11.
Remove tape from 11 wires (20).
12.
Connect 11 wires (20) to relay (17). Install 8
screws (21) and washers (22). Remove tags.
INSTALL HEATER CONTROL RELAY
13.
Position heater control relay (23) with X2 terminal
up, in box (7). Install four screws (24) and
washers (25).
14.
Remove tape from 10 wires (26).
15.
Connect 10 wires (26) to relay (23). Install 8
screws (27) and washers (28). Remove tags.
INSPECT
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