TM 9-4120-407-14
4-10. CONDENSER FAN MOTOR REPAIR.
This task covers:
a. Disassembly
b. Repair
c. Assembly
Tools
Materials/Parts
Service Refrigeration Unit Tool Kit
Lock Washers, Qty 4 (Item 32, Appendix G)
(Item 1, Appendix B)
Lock Washers, Qty 4 (Item 3, Appendix G)
Electrical Repair (Item 9, Appendix B)
Marker Tag (Item 2, Appendix E)
Load Spring (Item 31, Appendix G)
Equipment Conditions:
Condenser fan motor removed. See para 3-37.
a. Disassembly.
NOTE
Disassemble only to extent necessary for repair.
(1) Match mark the frame (1) to end shields (2) and (3).
(2) Remove four nuts (4), lock washers (5), and studs (6). Discard lock washers.
(3) Carefully separate end shield (2) from frame (1). Gently tap around end shield to break it loose.
(4) Carefully remove rotor (7).
(5) Carefully separate end shield (3) from frame (1). Gently tap around end shield to break it loose.
(6) Remove two screws (8) and cover (9).
(7) Remove four nuts (10), lock washers (11), flat washers (12), and screws (13). Discard lock washers.
(8) Carefully pull connector (14) out as far as wire leads (15) will allow.
(9) Tag and disconnect wire leads (15) from connector (14). See paragraph 3-19.
(10) Remove two screws (16) and box (17).
(11) Note location of thermostat (18) and carefully remove it.
(12) Tag and disconnect wire leads (19) from thermostat (18). See paragraph 3-19.
(13) Remove ball bearing (20) from end shield (2).
(14) Remove ball bearing (21) and load spring (22) from end shield (3). Discard load spring.
NOTE
Rotor and shaft are supplied as one component and must be replaced
as an assembly if either component is damaged.
(15) Check rotor (7) for any evidence of overheating such as discoloration or bum marks. Check shaft
(23) for any gouges, burrs or scored marks around bearing surfaces. Replace if damaged.
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