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3.
Using a folded piece of paper as a feeler gage, position the
paper between the wheel surface and the diameter seals.
4.
Adjust the seals towards the wheel surface until a slight
friction on the feeler gage (paper) is detected when the
gage is moved along the length of the spoke.
5.
Retighten the adjusting screws and recheck clearance with
the feeler gage.
HORIZONTAL
BEARING BEAM (2)
Fig. 184 — Lifting Hole Locations
Fig. 185 — Avoid Racking of Frame
TO
REMOVE
DIAMETER SEAL
ADJUSTING SCREWS
Fig. 186 — Diameter Seal Adjustment
SEGMENT INSTALLATION AND REPLACEMENT
Wheel segments are secured to the wheel frame by a segment
retainer, which pivots on the wheel rim and is held in place by a
segment retaining catch (Fig. 187).
To install wheel segments follow the steps below and refer to
Fig. 187.
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VERTICAL
BEARING BEAM (2)
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ROTATION
TO
ADJUST
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FEELER
GAGE
1. Unlock two segment retainers, one on each side of the
selected segment opening.
2. With the embedded stiffener facing the motor side, insert the
nose of the segment between the hub plates.
3. Holding segment by the two outer corners, press the segment
towards the center of the wheel and inwards against the
spoke flanges. If hand pressure does not fully seat the seg-
ment, insert the flat tip of a screw driver between the wheel
rim and the outer corners of the segment and apply down-
ward force while guiding the segment into place.
4. Close the latch each segment retainer under the segment re-
taining catch.
5. Slowly rotate the wheel 180 degrees. Install the second seg-
ment opposite the first for counterbalance. Rotate the two in-
stalled segments 90 degrees to balance the wheel while the
third segment is installed. Rotate the wheel 180 degrees
again to install the fourth segment opposite the third. Repeat
this sequence with the remaining four segments.
5
Fig. 187 — Segment Installation
WHEEL DRIVE MOTOR AND PULLEY REPLACEMENT
1. Disconnect power to the wheel drive motor.
2. Remove the belt from the pulley and position it temporar-
ily around the wheel rim.
3. Loosen the set screw in the wheel drive pulley using an
Allen wrench and remove the pulley from the motor drive
shaft.
4. While supporting the drive motor's weight in one hand,
loosen and remove the four mounting bolts.
5. Install the replacement motor using the hardware kit
supplied.
6. Install the pulley as shown in Fig. 188 and secure the set
screw to the drive shaft.
7. Stretch the belt over the pulley and engage it in the
groove.
8. Follow the start-up procedure on page 205.
SOLID BELT REPLACEMENT
1.
Obtain access to the pulley side bearing access plate. Bearing
access plates are not provided on 25 to 36-in. cassettes.
Remove the two bearing access plate retaining screws and the
access plate. See Fig. 189.
2.
Using a hex wrench, loosen the set screw in the bearing lock-
ing collar. Using a light hammer and drift (in drift pin hole),
tap the collar in the direction of wheel rotation to unlock the
collar. Remove the collar.
3.
Using a socket wrench with extension, remove the two nuts
that secure the bearing housing to the bearing support beam.
Slide the bearing from the shaft.
214
1
4
3
4
2
a39-2385
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