EVAPORATOR, FANS MOTOR, AND HOUSING REPAIR. (Cont)

TM5-4120-383-14

5-8.

EVAPORATOR, FAN, MOTOR, AND HOUSING

REPAIR.-Continued

(3) To replace bearings:

(a) Match-mark stator and both end bells to ease

reassembly.

(b) Remove four locknuts and flat washers and pull through

bolts out of motor.

stator. Use a brass

or plastic bar and hammer and tap

rear end bell away

from stator. Tap opposite sides,

top, and bottom in

alternating sequence to break end

bells loose.

Remove the front end-bell carefully to avoid damaging

wires. Wires may be left in place if care is taken

to avoid damaging them.

Unscrew loop clamp from the side of stator.

(d)

Remove end bells.

(e)

(f)

Press out or carefully drive bearings out of end bells.

Retain shims and thrust washer for use at reassembly if

they are not damaged.

Examine rotor, stator, and shafts for nicks, gouges,

(g)

deformations, and evidence of overheating.

Dress high metal defects in shafts with a fine file or

(h)

If damage exceeds repairable limits, replace

stone.

motor.

(i)

Coat shaft surfaces of rotor with oil (MIL-L-2104,

Grade 20) and slide bearings on shaft ends. They

should seat against shoulders at inner ends of shaft.

Coat thrust washers and shims with oil (MIL-L-2104,

(j]

Grade 20) and slide them over each end of shaft with

the thrust washers next to the bearings.

Coat bearing cavity of each end-bell with oil. Slide

(k)

end bell carefully into position over shaft so that OD

of bearing enters ID of bearing cavity in end-bell.

Work end-bells onto shaft until bore fits over end of

Keep the match-marks made at time of

stator.

disassembly in alignment.

5-17