Carrier /50HC 04-28, Controls, Start-Up, Operation And Troubleshooting, Page: 95 / 144

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4. Position one segment opening at the top of the cassette.
5. Unlock and open the segment retaining brackets on both
sides of the selected segment opening. See Fig. 48.
Fig. 48 — Segment Retaining Brackets
6. Gently lift segment outward.
7. Close segment retaining latches and rotate wheel 180° to
remove next segment. Follow this pattern to remove all
segments and keep wheel balanced.
8. To install the wheel segments, hold the segment as verti-
cally as possible and centered between spokes, insert nose
of segment downward between the hub plates. See Fig. 49.
NOTE: The face of the segment, with the imbedded stiffener (ver-
tical support between nose and rim end of segment) must face the
motor side of the cassette. See Fig. 50.
Fig. 49 — Segment Removal
Fig. 50 — Imbedded Wheel Stiffeners (Shown for
Motor Side of Wheel Assembly)
9. Ease the segment downward until its outer rim clears the
inside of the wheel rim. Press the segment inward against
the spoke flanges.
10. Close and latch segment retaining brackets to the position
shown in Fig. 48. Make certain the retaining bracket is
fully engaged under the catch.
11. Slowly rotate, by hand, the first installed segment to the
bottom of the cassette, and then install the second segment
opposite the first. Repeat this sequence with the two
installed segments rotated to the horizontal position to bal-
ance the weight of installed segments.
12. Continue this sequence with the remaining segments as
necessary.
13. When complete, close access door and remove lockout
and tag-out to apply power to unit.
WHOLE WHEEL REMOVAL / INSTALLATION (19 INCH
WHEEL)
These wheels are secured to the shaft and bearing support
beam by a Philips head screw and hub cover. Follow the steps
below for removal and reverse for installation. See Fig. 51.
1. Turn off, lockout and tag-out electrical power to unit.
2. Open access door to the EnergyX ® module on back side of
the unit.
3. Remove front seal assembly (pulley side of the cassette) if
present.
4. Remove belt from pulley and position temporarily around
wheel rim.
5. Remove the hub cover from the wheel.
NOTE: The wheel to shaft alignment pin under the hub cover. In-
sure this pin engages the notch at the end of the shaft when rein-
stalling the wheel.
6. Pull the wheel straight off the shaft. Handle with care.
Fig. 51 — 19 inch Wheel Mount
WHOLE WHEEL REMOVAL/INSTALLATION (25-46 INCH
WHEELS)
These wheels include the shaft and are secured to two wheel
support beams by two flange bearings with locking collars.
Follow the steps below for removal and reverse for installation.
See Fig. 52.
1. Loosen the two set screws on each to the two wheel bear-
ings.
2. Remove belt from pulley and position temporarily around
wheel rim.
3. Remove pulley side wheel support beam with bearing, by
removing four support beam screws.
4. Pull the wheel with the shaft straight out of the motor side
wheel support beam and bearing. Handle wheel with care.
Catch Pull Tab
Imbedded Stiffeners
Cassette
Housing/Frame
Shaft
Bearings (2)
Wheel
and Hub Hub Cover
Alignment
Pin