3. Corrosion:
Check battery terminals often for corrosion.
a. If corrosion is present, use a wire brush to clean the terminals.
NOTE– Always wear safety glasses and rubber gloves.
b. Use baking soda to neutralize acid.
c. Use petroleum jelly to re-grease the terminals after connecting cables to battery.
(Completely cover the terminal nut and bolt, cable clip and any exposed cable with
jelly).
4. For Answers To Questions: Contact your supplier.
E. PNEUMATIC TIRES
1. Do not use this chair if any of the tires are under-inflated or over-inflated.
2. Low pressure in a tire may cause the chair to veer to one side and result in
loss of control.
3. An over-inflated tire may burst.
4. Never use a gas station pump to inflate a tire. Such pumps provide air at
high volume, and may cause tire to burst.
1. Check for signs of wear and correct air pressure in pneumatic tires weekly.
2. For best performance, inflate tires to the same pressure level, as shown on the tire
sidewall:
• 10" pneumatic drive wheels - 30 to 40 psi
• 14" pneumatic drive wheels - 35 to 45 psi
3. Caution:
To prevent tire damage:
• Use a hand pump (or a low volume air pump) to inflate tires.
• Use a tire gauge to check pressure.
F. TO REPAIR OR REPLACE A TIRE
Residual air pressure in tires can cause severe injury. Make sure you release all
air in tire before attempting to service or repair tires.
10" & 14" Drive Wheels:
a. Elevate and securely support chair so that wheel is off the ground. Release all air
from tire (solid aluminum rim only).
b.Remove plastic dome plug (if applicable).
c. Bend locking tab away from nut.
d. Remove lock nut.
e.Remove washer.
f. Remove wheel from chair.
g. Make sure all air has been removed from tube.
h. Remove all bolts holding two halves of rim together (not applicable on solid alu-
minum rim), and remove tire and solid insert.
i. Repair or replace inner tube (replace rim strip if necessary).
NOTE– Do not use pneumatic inner tube in tires with two-piece rims.
j. Reassemble the wheel.
Use a torque setting of 420 in.-lbs. to re-tighten bolts.
k. Install wheel on chair by replacing center lock washer, nut and
plastic dome. Use a torque setting of 180 in.-lbs. to retighten bolts.
l. Inflate tire to proper pressure level (listed on tire sidewall).
G. MOTOR BRUSHES
Check the motor brushes every four (4) months for wear. The brushes should be clean and
shiny. Replace worn or blackened brushes.
930756 Rev. A
32 English XII. Maintenance