TM5-6115-593-34NAVFAC P-8-631-34TO-35C2-3-463-2c.Inspection.(1)Inspect for burnt or broken insulation.(2)Inspect if insulation is dry, brittle or faded.Revarnish as necessary.(3)Check bearings for visible signs of damage,excessive wear, or discoloration. Replace asnecessary.d.Repair. Repair of the fan motor consists ofreplacing broken, worn or defective componentsfound during inspection and drying orrevarnishing of windings if required as a resultof the megger test.e.Reassembly. Reassemble motor as follows(see figure 7-2).(1)Install stator winding (21) and core (20) insidestator frame (19).(2)Install shaft (18) and motor assembly (17).(3)Install drive end bearing (15).(4)Install drive end bracket (14) and secure tostator frame with studs (8) and nuts (7).(5)Install collar shield (13).(6)Install rear bearing (11) and spring (10).(7)Install opposite drive end bracket (9) andsecure with nuts (7).(8)Slide fan (5) and washer (4) onto shaft (18).Secure with snap ring (3).(9)Install fan cover (2) using nuts (1).f.Replacement.(1)Install fan motor (64, figure 7-1) on motormount (65). Attach with bolts (62) andwashers (63).(2)Install pulley (61).(3)Install belts (59) on sheaves (60) and pulley(61).(4)Install belt guard (58) with screws (55), nuts(57 and washers (56).(5)Adjust belt tension, with motor mount (65)adjusting screw, allowing 1/2 inch (13 mm)maximum play of each belt.(6)Connect electrical leads on fan motor.Remove tags.7-6. FAN AND BEARING REPLACEMENT, CODE A.a.Inspection.(1)Inspect fan (79) for bent or deformed blades.(2)Inspect tightness of attaching bolt and washerfor each fan blade.(3)Inspect fan bearing (71) for visible signs ofdamage, wear or deterioration.b.Removal. Remove fan and bearing as follows:(1)Turn off all power. Disconnect electrical leadson fan motor (64).(2)Remove fan motor mount (65) adjusting screwand slide mount with motor to release belttension.(3)Remove belt guard (58) by removing screws(55), nuts (57), and washers (56).(4)Remove belt guards (58).(5)Slide fan sheave (60) off bearing shaft (71).Remove key from shaft.(6)Remove bolts (72), washers (73 and 74), andnuts (75) and remove fan guard (76).(7)Remove bolts (77) and washers (78) andremove fan blades from fan (79).(8)Remove bolts (66), washers7-5
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