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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
4-76. CONDENSER MOTOR (B3).
This task covers:
Inspection
Service
Removal
Testing
Installation
INITIAL SET-UP:
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Crimping tool (pigtail) (Item 10, Appendix B)
Lubricating gun (Item 15, Appendix B)
Personnel: 1
Materials:
Grease aeroshell 22 (Item 2, Appendix E)
Rags (Item 12, Appendix E)
Equipment Conditions:
Disconnect input power to the air conditioner before performing any internal
maintenance. Voltages used can KILL. Shutting the unit off at the control panel
does not disconnect unit power.
1. Disconnect air conditioner input power at source.
2. Remove fan belt (para 4-75).
INSPECTION
1.
Check motor (5) for rotational freedom by spinning shaft. If there is any stiffness or binding, contact Direct
Support Maintenance (see Figure 4-76).
2.
Check motor bearings for shaft end play. If there is excessive end play, contact Direct Support Maintenance.
SERVICE
1.
Lubrication. Lubricate motor (para 4-1).
2.
Cleaning. Use clean dry cloth to remove dirt and grease from motor (5).
REMOVAL
1.
Remove four screws (3) and J-box cover (4).
2.
Tag and disconnect leads.
3.
Support motor (5) and remove four locknuts (2) and flat washers (1).
4.
Remove motor (5).
5.
Remove pulley (para 4-78 or 4-79).
TESTING
1.
Using multimeter, check continuity between wires 1 and 2, 1 and 3, and 2 and 3. Replace motor if there is no
continuity between any pair of wires.
2.Using multimeter set on high OHMS scale, test stator insulation between each wire (1, 2, and 3) and motor
housing. A reading of less than 500,000 ohms indicates insulation failure. Replace motor.
4-146
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