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

TM5-4120-384-14

5-8.

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

To replace overload (thermal) protectors on Keco Industries,

Inc. motor:

Thermal protectors are not replaceable on this motor.

If testing (para 4-32) indicates an open thermal protector, replace

motor.

replace

bearings

Keco

Industries,

Inc.

motor:

(1) Match-mark

stator

and

end

shield

assemblies

ease

reassembly.

(2)

Remove

four

thru

bolts,

nuts

and

lock

washers.

(3) Carefully separate end shield assemblies from stator and

cable assembly.

Using a brass or plastic bar and hammer tap

opposite sides, top, and bottom in alternating sequence to break

end shield assemblies loose.

(4)

Remove

end

shield

assemblies.

NOTE

Be sure load wavy spring washer(s) are not

lost during motor disassembly.

Note their

position for use in reassembly.

(5) Pull or carefully drive bearings off of rotor assembly.

Retain wavy spring washer(s) for use at reassembly if not damaged.

(6) Examine

rotor, stator, and shafts

for

nicks,

gouges,

deformations, and

evidence of overheating.

(7) Dress high metal defects in shafts with a fine file

stone.

If damage exceeds repairable limits, replace motor.

(8) Coat shaft surfaces of rotor

with oil (MIL-L-2104, Grade

20) and slide bearings on shaft ends.

They should seat against

shoulders at the inner ends of shaft.

(9)

Coat

the

bearing

cavity

end

shield

assemblies

with

oil.

(10)

Coat

wavy

spring

washer(s)

with

oil

(MIL-L-2104,

Grade

20).

(11) Carefully slip end shield assemblies, stator and cable

assembly, and shaft and rotor assembly back together.

Take care

that wavy spring washer(s) and match marks are in their original

position.

(12)

Place four thru bolts thru motor assembly and secure with

four nuts and lock washers.

Check for freedom of rotation by

turning motor shaft by hand.

There should be no drag or binding.

Change 1 5-18.1