O.casters; Footrest Height Adjustment - Quickie Q7 Adjustable Owner's Manual

Q 7
O. CASTERS
NOTE– Setting the wheelchair on a very flat table or a workbench makes this setting more accurate.
1. Adjusting Caster Angle
Checking for Caster Squareness:
Your Quickie wheelchair leaves the factory with the casters adjusted square. Any time you
change your wheelchair rear axle height, rear tire size, center of gravity position or camber
tube, you should check that the casters are still square. A caster that is not square will result
in the caster lifting off the floor as it rotates around the stem bolt
front of the wheelchair up and down. Check for squareness by placing your wheelchair on a
flat, horizontal surface. Rotate both forks so that the casters are towards the rear of the
wheelchair. Place a square or pocket level against the flat surface on the rear of the fork and
note whether this surface is vertical (square)
from vertical, your casters require re-squaring.
2. Re-squaring Your Casters
Locate the screw (A) inside the right caster tube and loosen using a custom 6mm Allen
wrench. Do not remove the screw. Simply loosen it enough to allow the teeth on the upper
and lower splines (B) to clear one another. With the stem bolt loosened, the caster fork
should pivot freely. Place the wheelchair on the floor so that the two rear wheels and left
caster contact the floor. Place some weight in the seat towards the rear to help stabilize the
chair. Place a square or pocket level against the flat surface of the fork and pivot the fork until
it is vertical (square) 31 . With the fork vertical, engage the teeth of the two splines to the
closest mating position. Make certain that the teeth are properly engaged and not crossed.
Shine a bright light behind the mating spline teeth and check for proper teeth engagement.
Tighten the screw (A) to secure the spline mating position. The screw should be tightened to
144 in-lbs. (16.3 Nm) to ensure that it does not loosen during use.
Record the teeth engagement position of the splines on the right fork, and adjust the left fork
in a similar fashion to the same position. Reassemble both casters, and re-check that they are
square. Replace caps.
3. 3-D Perpendicular Alignment
The allen bolt adjustment (C) provides another dimension of adjustability in addition to the
spline system. The bolt may be loosened to relieve tension in the stem assembly. The caster
angle may then be fine-tuned and the bolt retightened.
4. Correcting a Pull to the Right or Left
Determine which direction the chair is pulling (right or left). Make the following adjustments
to the caster on that side of the chair:
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a. Loosen the screw
b. Loosen the screw on the upper spline
c. Rotate the upper spline
direction. Turn the ring clockwise, and the fork will swing outwards. Turn the ring
counterclockwise, and the fork will swing inwards.
d. When the caster fork is correctly rotated forward, retighten the screws.
e. After making the desired adjustment, recheck the squareness of the casters. (See
"Checking for Caster Squareness" in Section O).
P . FOOTREST HEIGHT ADJUSTMENT
To adjust the height of your footrest, loosen the screw (E) on both footrest clamps. Slide the
footrest up or down to the new desired height and tighten the two set screws. Use a MAX
torque setting of 62 in-lbs (7 Nm). (Frame damage may occur if overtightened.) It is recom-
mended that you maintain a minimum of 2.0 inches (5 cm) between the lowest point on the
footrest and the floor. This will provide adequate clearance for uneven surfaces and prevent
damage to your footrest.
30 31
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. If this surface is more than 1 degree away
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-A) inside the caster tube using a custom 6mm Allen wrench.
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-D).
34 -D) to turn the caster fork toward the forward driving
30 and may also lift the
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19
30
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0° to 1° MAX
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A
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C
B
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D
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E
I X .
112786 Rev. B