Invacare Lightweight - Manual (Page 55)

SECTION 9—ANTI-TIPPERS/WHEEL LOCKS
Part No. 1114811 55 Lightweight, Standard and Heavy Duty Wheelchairs
Adjusting Patient-Operated Wheel Locks
ƽ WARNING
DO NOT attempt to stop a moving wheelchair with the wheel locks. Wheel locks
are not brakes.
NOTE: For this procedure, refer to FIGURE 9.5.
NOTE: If wheels are pneumatic, before adjusting the wheel lock assemblies, ensure that the tires
are inflated to the recommended psi on the side wall of tire.
1. Ensure the wheel lock is in the open (unlocked position).
2. Loosen the bolt and locknut that secure the wheel lock assembly to the wheelchair
frame.
3. Reposition the wheel lock so that when engaged, the wheel lock shoe embeds the tire
1/8-inch (3/16-inch for pneumatic tires) and holds the wheelchair.
4. Securely tighten the bolt and locknut securing the wheel lock to the wheelchair frame.
5. Engage the wheel lock.
6. Measure the distance the wheel lock is embedded into the tire as shown in Detail “A”
of FIGURE 9.5.
NOTE: Any wheel lock adjustment should embed the wheel lock shoe at least 1/8-inch (3/16-inch
for pneumatic tires) into the tire when engaged.
7. Repeat STEPS 1-6 until the wheel lock shoe embeds the tire 1/8-inch (3/16-inch for
pneumatic tires) and holds the wheelchair.
8. If the measurement of 1/8-inch
(3/16-inch for pneumatic tires) cannot
be achieved, remove the bolt and
locknut that secure the wheel lock to
the wheelchair frame and mount the
wheel lock in the remaining mounting
position.
9. Repeat STEPS 1-7.
10. If the wheel lock is unable to properly
engage the wheel, it may be necessary
to install wheel lock shoe extensions.
Refer to Installing Wheel Lock Shoe
Extensions on page 56.
11. Repeat STEPs 1-7.
12. Repeat STEPS 1-9 for the opposite
wheel lock.
13. Engage both wheel locks and ensure
the occupied wheelchair is held in
place when pushed.
FIGURE 9.5 Adjusting Patient-Operated
Wheel Locks
Bolt-On
Wheel Locks
1/8-inch
(3/16-inch
pneumatic
tires)
Wheel Lock
Shoe
Tire
Wheel
Lock
Mounting
Positions Wheel Lock
Handle
Rear
Wheel
Wheel
Lock
Shoe
Bolt and
Locknut
DETAIL “A”