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9. Roll the rear wheels. If rear wheels rub the wheelchair
at any point, adjust the wheelbase width. Refer to
ADJUSTING WHEELBASE WIDTH in this proce-
dure of the manual.
TOE-IN/TOE-OUT ALIGNMENT
(FIGURES 8 AND 9)
1. Inflate all pneumatic tires to recommended tire
pressures (listed on the sidewall of the tire).
2. Measure the distance between the center lines at
the rear and front of the rear wheels at approxi-
mately 12-inches from the ground/floor (FIGURE
8).
NOTE: For optimum accuracy, perform STEP 2 with
the wheelchair occupied.
12-inches
FIGURE 8 - MEASURING FRONT AND REAR
OF REAR WHEELS
3. Determine the difference between the two (2) mea-
surements. If the difference between the two (2)
measurements is GREATER than 1/4-inch (0
+
1/8-inch for maximum rollability), one (1) of two
(2) conditions exists:
A. If the back centerline measurement of the rear
wheels is SMALLER than the front centerline
measurement of the rear wheels, a TOE-OUT
condition exists (FIGURE 9).
B. If the back centerline measurement of the rear
wheels is LARGER than the front centerline
measurement of the rear wheels, a TOE-IN con-
dition exists (FIGURE 9).
4. If the difference is greater than 1/4-inch, correct the
toe-in/toe-out condition. Refer to CORRECTING
TOE-IN/TOE-OUT CONDITION in this procedure
of the manual.
Toe-in
Smaller Than
Front
Larger Than Front
Toe-out
FIGURE 9 - TOE-IN/TOE-OUT CONDITION
FRONT OF WHEELCHAIR
R
E
A
R
W
H
E
E
L
S
REAR WHEELS PROCEDURE 6
Front of
Wheelchair
Rear of
Wheelchair
Centerline of
Wheelchair
TOP VIEW OF
WHEELCHAIR