Invacare CROSSFIRE T6 - Manual (Page 49)

SECTION 8—WHEELS
Part No 1148078 49 Crossfire™Series Wheelchairs
Determining Toe In/Toe Out
NOTE: For this procedure, refer to FIGURE 8.13.
1. Inflate all pneumatic tyres to recommended tyre pressures (listed on the sidewall of
the tyre).
2. Measure the distance between the centerlines at the rear and front of the rear wheels
at approximately 12 inches (30.48 cm) from the ground/floor (FIGURE 8.13).
NOTE: For optimum accuracy, perform STEP 2 with the wheelchair occupied.
3. Determine difference between two measurements. If difference between the two
measurements is greater than ½-inch (1.27 cm) (0 + ¼-inch (.64 cm) for maximum
rollability), one of two conditions exists:
• 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 8.13).
• If the back centerline measurement of the rear wheels is LARGER than the front
centerline measurement of the rear wheels, a TOE-IN condition exists
(FIGURE 8.13).
4. If the difference between the measurements is greater than ½-inch (1.27 cm), correct
the toe-in/toe-out condition.
FIGURE 8.13 Adjusting Wheelbase Length (Adjusting Center of Gravity) - Measuring
Centerlines of Rear Wheels
Front of Wheelchair
12-inches
(30.48 cm)
Rear of
Wheelchair
Centerlines of Rear Wheels
Front of Wheelchair
Top View of Wheelchair
Smaller than
Front
Larger than Front
Toe-out
Toe-in
Top View of Wheelchair