Sunrise Medical Revolution instruction manual Caster Forks, Caster Plates, Caster Mounting

X . S E T U P & A D J U S T M E N T

3.Toe-In and Toe-Out

Toe-in and Toe-out terms are terms that relate to how well the rear wheels of the chair are aligned.This will affect how well the chair will roll. Drag or resistance occurs in a wheelchair when the rear wheels are not properly aligned.

Toe-in can be slightly adjusted for setting the axle adjustment bracket to be parallel with the ground.To make this adjustment:

a)Remove side plate.

b)Turn eccentric bolt until axle adjustment bracket is exactly parallel to the ground.

c)Reinstall side plate.

d)The axle should protrude equal amounts on both sides of the chair.

4.Wheelbase Width Adjustment Adjusting the wheelbase width allows the rider the option to move the wheels closer or further away from the hips. It also compensates for camber adjustment

and gives the proper wheel spacing to maximize pushing efficiency.

Adjust the wheelbase by:

a)Loosening the nut and repositioning the axle sleeve by screwing in or out of camber tube.

b)Retighten nuts.

c)Repeat on other side of chair.

d)The axle should protrude equal amounts on both sides of the chair.

5.Seat Height Adjustment (angle)

The benefit of the seat height adjustment is that it allows the rider to adjust the seat height for environment, body and mechanical efficiency.There may be times when it is advantageous to have an angled seat such as when playing basketball or tennis.Whenever the set angle changes, the front caster stem must be realigned to a 90º angle.

Seat height can be adjusted by:

a)Adding a 3/4" or 1 1/2" spacer. Spacers are available from your authorized supplier.

b)This adjustment should only be made by an authorized supplier.

930354 Rev. B 32

X . S E T U P & A D J U S T M E N T

6.Rear Wheel Axle Sleeve Adjustment Tight axle sleeves should be maintained for proper performance of the wheelchair.

a)To adjust the axle you will need a 3/4" wrench to turn the outside axle nuts.

b)You will also need a 1/2" wrench to lodge the ball bearings, on the opposite end of the axle, and prevent the axle from turning.

c)Turn the outside axle nut counter- clockwise to tighten.

d)There should only be zero to ten thousandths of an inch (.010") of play.

H. CASTER FORKS

Two-hole caster forks allow interchanging 3", 5" and 6" casters and adjusting seat height.

1.Caster Fork Adjustment

a)Loosen the bolt and remove the caster.

b)Either change caster size and/or position caster upward or downward in predrilled holes (1 inch apart) on caster fork.

c)Replace bolt and tighten securely.

d)Repeat with other caster.

I.	CASTER PLATES
1.	Angle Adjustment
	a)	Loosen the two eccentric bolts that
		secure the caster assembly. Do not
		remove the clevis pin.
	b)	Place a large right triangle against the
		table surface and the front surface of
		the caster bearing housing.This will
		align the caster stem rotational axis
		perpendicular to the floor surface.
	c)	When alignment is satisfactory,
		retighten the two eccentric bolts.
	d)	Repeat the process for the other caster.
J. CASTER MOUNTING
1. Forward or Rearward Placement
	a)	Remove caster housing cover.
	b)	Remove the two eccentric bolts from
		each caster.
	c)	Move left-side caster to right-side.
	d)	Move right-side caster to left-side.
	e)	Remount casters to caster bracket.
	f)	Tighten the eccentric bolts.
	g)	Replace caster housing cover.
		33	930354 Rev. B