Quantcast Figure 4-24. Motor (B3) Welco Industries 4120-01-069-1321)">

 

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Figure 4-23. Motor (B3) IMC Magnetics
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TM-5-4120-359-14 Air Conditioner Split Package 18 000 BTU/HR Cooling 30 000 BTU/HR Heating 208 Volt 3 Phase 400 Hertz Manual
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MOTOR, ALTERNATING CURRENT (B3) (Continued)
TM 5-4120-359-14
Figure 4-24. Motor (B3) Welco Industries
(2) To replace bearings on IMC Magnetics Corporation motors:
(a) Using screwdriver, remove four screws and washers and carefully remove the end cap assembly.
(b) Carefully pull the rotor and shaft assembly from the motor housing.
(c) Note the position and number of springs, shims, and bearings as they are removed.
(d) Remove the shim(s) and spring and pull the bearings from the shafts.
(e) Place the new bearings on the shafts.
(f) Place the spring and shim(s) back on shaft in same position as removed.
(g) Carefully place the rotor and shaft with bearings back in the motor housing.
(h) Using screwdriver, secure the end cap assembly to the housing assembly with four screws and washers.
Before tightening completely, spin shaft to see that it spins freely. If any rubbing is noted, adjust the end cap slightly to
relieve rubbing. Finish tightening the four screws.
(i) Check end-play of shaft. End play should be 0.002-0.005 inch (0.051-0.127 mm). If end-play is not
within limits, disassemble motor and add or remove shims to adjust.
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