SECTION 7—REAR FRAME
52
Stability Lock Inspection/Adjustment
NOTE: For this procedure, refer to FIGURE 7.5.
NOTE: Depending on the date of manufacture, the stability lock boot will be secured to the wheelchair frame by a tie-wrap or a 10-32
hex head screw.
1.
Remove the two stability lock boots.
2.
Ensure all six wheels of the wheelchair are in contact with the floor or work surface.
NOTE: A United States penny may be used to gauge the distance between the elevator bolt and the pivot ball.
3.
Insert a 1/16-inch gauge on the pivot release pin between the elevator bolt and pivot ball of both locking-gas cylinders
(one on each side of the wheelchair) to ensure there is a 1/16-inch gap between the elevator bolts and the pivot balls.
4.
If necessary, adjust the elevator bolt as necessary to achieve 1/16-inch clearance. Refer to Adjusting the Stability Lock
Setting on page 53.
5.
Compress the rear springs several times by pulling down on back canes or kneeling in the seat and pushing on the back
canes to make sure the setting will not change after adjustment.
6.
Repeat STEP 3 to verify that 1/16-inch clearance setting has not changed.
7.
If the 1/16-inch clearance has changed, repeat STEPS 4-6 to reset clearance to 1/16-inch.
8.
Using a tie-wrap or a mounting screw, install the stability lock boot onto the base frame guide block.
FIGURE 7.5
Stability Lock Inspection/Adjustment
Rear
Casters
Level
Surface
Back Canes
Seat
Wheels
Gas Locking
Cylinder
1/16-inch Gap
Elevator Bolt
Pivot
Ball
1/16-inch Gauge or
U.S. Penny
Pivot Release
Pin
