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Metro Power III Owner’s Manual GF0600059RevB06, November 2006
33
Inspect motor brushes
e motor brushes should be inspected for wear every six months and replaced as needed. is
should be performed by an Graham-Field dealer.
s
Caution: Badly worn brushes can result in damage to the motors or integral controller.
s
Caution: After replacing the brushes, run the wheelchair gently for the first few miles to allow
the brushes to seat properly.
Check bearings
e Metro Power III has bearings only in the caster wheels, not in the rear wheels. Always be alert
for unusual noises in the bearings or excessive caster wobble. ese signs indicate that the bearings
are becoming worn and may require replacement. e caster bearings should be inspected every six
months and replaced as needed. is should be performed by an Graham-Field dealer.