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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
4-71. CIRCULATOR FAN (EVAPORATOR).
This task covers:
Inspection
Service
Removal
Repair/Replace
Installation
INITIAL SET-UP:
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Gloves, chemical (Appendix C)
Personnel: 1
Materials:
Corrosion preventative (Item 17, Appendix E)
Rags (Item 12, Appendix E)
Methyl-ethyl ketone (Item 13, 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 4-69).
3. Remove evaporator motor (para 4-70).
4. Remove circulator fan pulley (para 4-68).
INSPECTION
1.
Inspect for noise or missing mounting hardware (see Figure 4-72).
2.
Check fan shaft for rotational freedom by spinning shaft. If there is any stiffness or binding, replace bearings and
bearing collar.
3.
Check motor for shaft end play and defects. Replace shaft, if defective.
SERVICE
Service consists of applying corrosion preventative compound to shaft before installation.
REMOVAL
1.
Remove 10 screws (1), flat washers (3), and lockwashers (2) securing top brackets (4).
2.
Remove 6 screws (10), flat washers (12), and lockwashers (11) securing blower (14) to housing (13).
3.
Tilt blower (14) towards coil and remove.
4-136
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