Toshiba MMU-AP0074YH-E(-TR) Service Manual page 133

N . o C o m p o n e t n
5 Fan
Shaft
Bearing
Coupling
Fan case
(Continued)
P o r c e
2. Attaching
1) Attach the fan to the shaft.
Place the tightening screw on the right side of the
fan against the lower panel. (See the picture on
the right.)
On the boss of the fan, there is undercut for
scratch made when the screw with square hole is
attached to the shaft.
Fit the shaft scratch to the fan groove.
Tighten later.
For the fan attaching direction, see the picture on
the right.
2) Attach the bearing to the shaft in Step 1 if
necessary.
On the shaft, there is a groove to fit the attaching
position for the bearing. Fit a single face of the
coupling to the groove, and then fix with the screw
with square hole.
NOTE
Tighten with torque wrench by 2.5 – 3.4 N•m.
3) Insert the shaft with fan into the coupling. Tighten
later.
4) Reattach the bearing to the main unit.
NOTE
Insert the bearing spacer between the base and cover,
and tighten with a bolt.
(Ø8 X 12, 2)
5) Tighten the coupling.
On the shaft, there is a groove to fit the attaching
position for the coupling.
Fit a single face of the coupling to the groove, and
then fix with the screw with square hole
NOTE
Tighten with torque wrench by 4.9 N•m or more.
6) Position the fan so that the fan is placed on the
center against the fan case (upper), and fix with
the screw with square hole.
NOTE
Tighten with torque wrench by 4.9 N•m or more.
7) Reattach the fan case (lower).
Make sure that the fan rotates smoothly.
d u e r
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R e m a k r s
Place the screw part on the
right side against the lower
panel.
Lower panel
Screw undercut
Shaft
Shaft groove Shaft groove
Coupling
Fan case (upper)
Place the fan on the center of the fan
case.