Inspect. - TM-5-4120-347-140109

TM5-4120-347-14

b. Inspect.

(1) Check that all parts are in place and in good condition.

(2) Check mounting hardware for tightness.

(3) Check motor to see that fan rotates freely without excessive lateral or end play of the shaft.

(4) Disconnect the P5 motor connector plug and check for loose, damaged or missing pins.

c. Test.

(1) The motor is capable of operating at two speeds. Therefore there are two sets of field coils.

(2) Use ohmmeter or continuity tester to check continuity between pins A and B and between E and F.

Continuity should exist.

(3) Check continuity between pins G and A, B, E and F. Continuity should not exist.

Disconnect input power from the air conditioner before performing maintenance on any part of the

electrical system. The voltages used can be lethal.

(1) Disconnect power at the power source.

(2) Remove the top rear cover.

(3) Check that all parts are in place and in good condition.

(4) Check mounting hardware for tightness.

(5) Check motor to see that fan rotates freely without excessive lateral or end play of the shaft.

(6) Disconnect the P5 motor connector plug and check for loose, damaged or missing pins.

c. Test.

(1) The motor is capable of operating at two speeds. Therefore there are two sets of field coils.

(2) Use an ohmmeter or continuity tester to check continuity between pins A and B and between E and F

Continuity should exist.

(3) Check continuity between pins G and A, B; E and F. Continuity should not exist.

NOTE

If all the above inspections and tests are satisfactory, but the motor will still not operate properly,

notify direct support maintenance, who may desire to make further tests before it is removed.

d. Removal/Disassembly. (See figure 4-35.)

(1) Remove the four cap screws and washers from the top of the motor mounting plate.

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