Rear Axle; Center Of Gravity Adjustment; Wheel Camber - Sunrise Medical Zippie ZONE Manual De Instrucciones

E N G L I S H
L. REAR AXLE
The most important adjustment on your Zippie wheelchair is the position of the rear axle.
The center of gravity and wheel camber are determined by the axle adjustment.

1. Center of Gravity Adjustment

The more you move your rear wheels forward, the more likely your chair will tip
over backwards. Always make adjustments in small increments, and check the
stability of your chair with a spotter to prevent a tip-over. We recommend that
you use anti-tip tubes until you adapt to the change and are sure you are not at
risk to tip over. Refer to additional Warnings in Section VI "Falls and Tip Over".
NOTE– Changes to the center of gravity may affect the rear seat height (Section J), toe-in/toe-out of the rear
wheels (Section L-3) and the squareness of the casters (Section N). If you change your center of gravity
position, re-adjust all of these settings if necessary.
NOTE– Adjusting your chair's center of gravity will require re-adjusting the location of the wheel locks
(if provided). See Section P for instructions on adjusting the wheel locks.
You can adjust your center of gravity position by moving the camber clamp (C) fore or aft of
the axle plate (A). Using a 4mm Allen Key remove the bolt (B) from both the left and right
side of the wheelchair. Position the camber clamp in the new preferred center of gravity
location. Secure bolt back into position using 62 in-lbs. (7 Nm) of torque.
Ensure both sides of the wheelchair are using the same center of gravity position settings.
Once the axle plate and camber clamp are secured, attach the rear wheels, occupy the chair
and maneuver it with a spotter to get a feel for the new adjustment.
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2. Wheel Camber

Wheel camber, shown as angular relationship (D), provides greater side-to-side stability due
to the increased width and angle of the wheelbase. It also allows for quicker turning and
greater access to the top of the handrims.
Wheel camber is determined by pairs of interchangeable camber plugs which are available
from your authorized supplier in 0º, 3°, and 6º angles.
3. Setting Toe-in toe-out to zero
NOTE– A wheelchair equipped with 0° camber plugs cannot have a toe-in toe-out condition. This adjust-
ment is only required when using 3° and 6° camber plugs.
Toe refers to how well the rear wheels of the chair are aligned relative to the ground. It
affects how well the chair will roll. Drag or rolling resistance is optimally minimized when the
wheel toe is set to zero.
Setting the Toe to Zero
Loosen the 2 cap screws (E) (2 per side) that secure the camber tube clamp. Observe the ball
in the level (G), and rotate the camber tube (F) until the ball is centered in the level. The toe
is now set at zero.
Before tightening the screws (E), make certain that the camber tube is centered left-to-right
relative to the wheelchair frame. There should be an equal gap on both sides or none at all.
Torque fasteners (A) to 62 in-lbs. (7 Nm).
Setting the Toe to Zero– Alternative Method
Place the entire wheelchair on a flat horizontal table or ground surface. Loosen the 2 cap
screws (E) (2 per side) that secure the camber tube clamp. Locate the flat surfaces on the
front and rear of the camber plugs ( I ). Place an object that is known to have an accurate 90°
corner (such as a carpenters square, drafting triangle, etc.) down on the flat horizontal sur-
face and up against the flat of the camber plug. Rotate the camber tube and plug assembly
until the flat surface of the camber plug is parallel to the measuring tool.
Before tightening the screws (E), make certain that the camber tube is centered left-to-right
relative to the wheelchair frame. There should be an equal gap on both sides of the wheel-
chair or none at all. Torque the fasteners to 62 in-lbs. (7 Nm).
116100 Rev. B
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WARNING
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A
B
C
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D
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F
E
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F
G
ball
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I
parallel
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F
D
I X .