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

TM5-4120-383-14

EVAPORATOR, FAN, MOTOR, AND HOUSING REPAIR.-Continued

5-8.

Remove end brackets.

(d)

(e)

Press out or carefully drive bearings out of end

Retain washers and load spring from rear

brackets.

brackets (shaft end) for use at reassembly if they are

not damaged.

Examine rotor, stator and shafts for nicks, gouges,

(f)

deformations and evidence of overheating.

Dress high metal defects in shafts with a fine file or

(g)

If damage exceeds repairable limits, replace

stone.

motor.

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

(h)

They

Grade 20) and slide bearings on shaft ends.

should seat against shoulders at the inner ends of

shaft.

Coat washers and load spring with oil (MIL-L-2104,

(i)

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

load spring installed last.

Coat bearing cavity of each end-bracket with oil.

(j)

Slide end-bracket carefully into position over shaft so

that OD of bearing enters ID of bearing cavity in end-

Work end-brackets onto shaft until bore fits

bracket.

Keep match-marks made at time of

over end of stator.

disassembly in alignment.

Place four screws in each end-bracket.

(k)

Tap around both end-brackets with a plastic or rawhide

(l)

Tighten in alternating

mallet while tightening screws.

sequence until all screws are equally tightened. Check

for freedom of rotation by turning motor shaft by hand.

There should be no drag or binding.

End play should be 0.002 -

Check end-play of shaft.

(m)

If end-play is not

0.005 inch (0.051 - 0.127 mm).

within limits, disassemble motor and add or remove

shims to adjust.

5-20