Removal and Replacement of Core Assembly

TM 11-5825-271-34

(2) Raise ATU front cover (12) and insert the

(1) Refer to figure 3-5 (1). Install core assembly (5)

door support rod (18) into the door stop bracket (19).

on the tuning spindle, bearing on the lower female

Insert the hitch pin clip through the hole at end of the

standoff (7) only.

door support rod.

(2) Tighten nut (8) to secure core assembly (5)

(3) Refer to figure 3-5 (1). Disconnect the

into place. Do not bear on core or ceramic pillar.

external connections to each loading coil (4). Note and

(3) Install each loading coil (4) on the ceramic

record the loading coil connections.

pillars (6) using two flat washers (3), lockwashers (2) and

(4) Remove two screws (1), lockwashers (2)

screws (1). Check that the loading coils have the same

and flat washers (3) holding each loading coil (4) to the

part number and are installed as noted in 3-15a(4),

ceramic pillars (6). Note and record the part number of

above.

each loading coil and its position (left or right). Remove

(4) Restore all external connections to the

both loading coils and retain the attaching hardware for

loading coils (4) as recorded in 3-15a(3), above (5) Refer

reassembly.

to figure 3-5 (2). Remove the hitch pin clip from the door

(5) Loosen nut (8) securing core assembly (5).

support rod (18) and disengage the door support rod

Do not bear on the ferrite slug or ceramic pillar; bear on

from the door stop bracket insert the door support rod

the standoff (7)

into the retainer and close the ATU front cover (12)

(6) Unscrew core assembly (5), bearing on the

(6) Using a slot screwdriver, lock the ATU front

lower female standoff (7) only

cover (12) by turning the latch screw (13).

b. Replacement. Proceed as follows.

3-8