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Structural Maintenance
158
4. Use a torque wrench set to 7 ft-lb (9.5 N•m)
[Note: 6.43 ft-lb (8.7 N•m) actual required] to
complete the tightening sequence on each bolt
alternatively.
5. If necessary, loosen the condenser fan orifice
mounting bolts, center the orifice around the
fan, and tighten the mounting bolts.
Evaporator Fan/Blower
Alignment
When mounting the evaporator blowers on the fan
motor shafts, the blowers and inlet orifices must
be properly aligned for proper air flow and to
prevent damage to the blowers.
1. Loosen the orifice mounting bolts.
2. Slide the blower towards the orifice until it
contacts the orifice. This centers the orifice in
the blower.
3. Tighten the orifice mounting bolts securely.
4. Slide the blower away from the orifice.
5. Position the blower so the edge of the orifice
lines up with the alignment mark on the
blower as shown in Figure 250 and tighten the
blower hub bolts.
6. Spin the blower by hand to check for blower
distortion.
7. Pass a 0.09 in. (2.3 mm) diameter gauge wire
completely around the circumference of the
orifice and the blower wheel to check for
uniform clearance.
1.
Grille
4.
Fan Motor
2.
Orifice
5.
Fan Motor Mounting Bracket
3.
Fan
Figure 248: Curbside Condenser Fan Components
(Roadside Similar)
1
2
3
4
5
1.
Curbside Orifice
4.
Roadside Blower
2.
Curbside Blower
5.
Roadside Orifice
3.
Fan Motor
Figure 249: Front View Showing Evaporator
Fans/Blowers Through Access Panel
1.
Alignment Mark
3.
Blower Wheel
2.
Edge of Orifice
4.
Orifice
Figure 250: Evaporator Blower Alignment
(Curbside Shown Roadside Similar)
1
2
3
4
5
ARA1917
3
1
4
2