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Quantum R-4000 www.pridemobility.com 35
Follow these easy steps for a quick and safe repair for both pneumatic and solid tires:
1. Turn off the power to the controller.
2. Set the power chair up on blocks.
3. If you are changing a pneumatic tire, completely deflate it before removing the wheel.
4. Remove the five (5) lug nuts from the wheel hub. See figure 23.
5. Remove the wheel from the hub.
6. Remove the screws and separate the front and rear rim. See figure 24.
7. Remove the old tube from the pneumatic tire and replace it with a new tube or replace the entire assembly if
it is a solid tire.
8. Screw together the two rim halves.
9. Slide the wheel back onto the hub.
10. Reinstall the five (5) lug nuts and tighten.
11. Inflate the pneumatic tire to the psi/bar/kPa air pressure rating indicated on each tire.
12. Remove the power chair from the blocks.
Battery Replacement
A battery wiring diagram is printed on a decal located on the battery door. See figure 25. Refer to the specifications
table in III. “Your Power Chair” for correct battery specifications.
MANDATORY! Battery posts, terminals, and related accessories contain lead and
lead compounds. Wear goggles and gloves when handling batteries and wash hands
after handling.
WARNING! Do not replace battery when seat is occupied.
WARNING! The batteries on your power chair should only be serviced or replaced by
a Quantum Rehab Provider or a qualified technician.
WARNING! Power chair batteries are heavy. See specifications table. If you are
unable to lift that much weight, be sure to get help. Use proper lifting techniques and
avoid lifting beyond your capacity.
WARNING! Do not mix old and new batteries. Always replace both batteries at the
same time.
VII. CARE AND MAINTENANCE
Figure 24. Quantum R-4000 Drive Wheel Disassembled
TIRE
SCREWS
FRONT RIM HALF
LUG NUT
REAR RIM HALF
Figure 23. Quantum R-4000 Drive Wheel
TUBE
WHEEL HUB