Sunrise Medical GT Offset Seating Optional Figure, Seat Sling Adjustment Figure, Rear Axle

I X . S e t - U p & A d j u s t m e n t E n g l i s h 23

F. OFFSET SEATING (OPTIONAL) (FIGURE 9)

NOTE– Before installing Offset Seating review the warning in Section VIII-R.

The optional offset seating plug (G) can locate the back canes (H) either 1" or 2" more rearward than the standard seating plug.

1.Before installation, determine which backrest system will be used and the offset that will be established.

2.If the offset is approximately 1" then fasten screw (I) into hole 1.

3.If the offset is approximately 2" then fasten screw (I) into hole 2.

G. SEAT SLING ADJUSTMENT (FIGURE 10)

Remove the screws and rear nut retaining the left side seat sling. Readjust VELCRO®-style material to increase the tension in the seat sling. Replace screws and rear nut. If there is any difficulty in reattaching the screws, try using a probe to help align the holes. Ensure that the plastic saddles are under the seat rail in all but the most rearward fastener position.

H. ADJUSTING REAR SEAT HEIGHT (FIGURE 11)

To adjust rear seat height, loosen and remove the 4 cap screws (A) (2 per side) and nut plate (B) that secure the camber tube clamps (C) to the axle plates (D). Move both camber tube clamps (C) to the desired height and reinstall the 4 cap screws. Prior to tightening, follow the instructions for setting the toe-in/out to zero (Section J-3). Tighten screws to 144 in-lbs. (16.3 Nm).

NOTE– Adjustment to rear seat height may also require caster angle adjustment. See Section K.

I. CUSHION (OPTIONAL) INSTALLATION

Place cushion on seat sling with VELCRO® side down. The beveled edge of the cushion should be in front. Press firmly into place.

J. REAR AXLE

The most important adjustment on your Quickie 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 (Figure 12)

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 sta- bility 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 H), toe-in/toe- out of the rear wheels (Section J-3) and the squareness of the casters (Section L). 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 N for instructions on adjusting the wheel locks.

You can adjust your center of gravity position by moving the two axle plate clamps (E) for- ward or rearward on the seat tube (F). Moving the axle plate clamps forward shortens the wheelbase and lightens the front end, making your chair more maneuverable. Moving the axle plates rearward makes the chair more stable and less likely to tip over rearward.

To adjust the center of gravity location, remove both rear wheels. Loosen the 4 screws (G) (2 per side) that secure the axle plate clamps (E) to the seat tubes. Slide both axle clamps for- ward or rearward along the seat tube to the desired position. Make sure both sides are adjusted symmetrically before tightening screws. Tighten screws to 144 in-lbs. (16.3 Nm).

Once the axle plate clamps are secured, attach the rear wheels, occupy the chair and maneuver it with a spotter to get a feel for the new adjustment.

offset		9
I	G	H
	2"	1"
		10

	11
B	C
D	A

	E	12
F	G

050105 Rev. C