TM 5-4520-253-13
REMOVE/lNSTALL VENTILATING AIR MOTOR (CONT)
4.
5.
6.
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8.
9.
10.
11.
12.
13.
Death or serious injury could occur if precautions are not
taken when maintaining this equipment. Position HEATER.
OFF-FAN switch to OFF and remove power cable plug
from POWER RECEPTACLE. Remove electrical charge
from ventilating motor capacitor C3 by shorting out con-
tacts using tool having insulated handle. Always disconnect
power cable before making continuity tests or before re-
pairing heater.
Always have another person standing by
who is trained in electric shock first aid.
Disconnect red wire (8) of ventilating air
motor (9) from red wire of PC board.
Tag and disconnect white wire (10) from
capacitor (11).
Tag and disconnect brown wire (12) and
white wire (13) of motor (9) from capacitor
(11). Remove wires (10, 12, and 13) from
capacitor boot (14).
Remove four screws (15), lock washers (16), and flat
ventilating air motor (9) and motor mount (18).
washers (17) and lift out assembled
Remove screw (19), lock washer (20), and nut (21 ) and lift off capacitor (11). This step also dis-
connects one end of ground strap (22). To disconnect opposite end, remove nut (23) and lock
washer (24).
To remove capacitor (11) from mounting bracket (25), loosen screw (26), and slide capacitor out
endwise.
Remove screw (27), lock washer (28), and nut (29). Separate halves of motor mount (18).
Loosen set screws (30) and remove fan blades (31).
Motor cushion (32) can be removed by sliding off end of motor (9) in direction away from motor
wires.
If butt connector (34)
new butt connector.
Do not remove butt connector (34).
is accidentally loosened or removed, reconnect wires (35 and 36) using
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