TM5-6115-593-34
NAVFAC P-8-631-34
TO-35C2-3-463-2
c.
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 as
necessary.
d.
Repair. Repair of the fan motor consists of
replacing broken, worn or defective components
found
during
inspection
and
drying
or
revarnishing of windings if required as a result
of the megger test.
e.
Reassembly. Reassemble motor as follows
(see figure 7-2).
(1)
Install stator winding (21) and core (20) inside
stator frame (19).
(2)
Install shaft (18) and motor assembly (17).
(3)
Install drive end bearing (15).
(4)
Install drive end bracket (14) and secure to
stator 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) and
secure 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 motor
mount (65). Attach with bolts (62) and
washers (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 washer
for each fan blade.
(3)
Inspect fan bearing (71) for visible signs of
damage, wear or deterioration.
b.
Removal. Remove fan and bearing as follows:
(1)
Turn off all power. Disconnect electrical leads
on fan motor (64).
(2)
Remove fan motor mount (65) adjusting screw
and slide mount with motor to release belt
tension.
(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), and
nuts (75) and remove fan guard (76).
(7)
Remove bolts (77) and washers (78) and
remove fan blades from fan (79).
(8)
Remove bolts (66), washers
7-5