Invacare® MyOn® HC
9.2 Identifying and repairing faults
Fault
Possible cause
Action
Incorrect tire pressure on one rear wheel Correct tire pressure, →
3.10 Tires, page 29
The wheelchair does
not travel in a straight
line
One or more spokes broken
Replace faulty spoke(s), → qualified technician/dealer
Spokes tightened unevenly
Tighten loose spokes, → qualified technician/dealer
Front wheel bearings are dirty or
damaged
Clean or replace the bearings, → qualified technician/dealer
Rear wheels are mounted too far
forwards
Mount the rear wheels further back, → qualified
technician/dealer
The wheelchair tips
backwards too easily
Back angle too large
Reduce the backrest angle, → qualified technician/dealer
Seat angle too large
Mount the adapter plate lower on the side profile,
→ qualified technician/dealer
Select a smaller front fork, → qualified technician/dealer
Incorrect tire pressure in one or both
rear tires
Correct tire pressure, →
3.10 Tires, page 29
The brakes are
gripping poorly or
asymmetrically
Brake setting incorrect
Correct the brake setting, → qualified technician/dealer
Tire pressure in rear tires is too low
Correct tire pressure, →
3.10 Tires, page 29
Rolling resistance is
very high
Rear wheels not parallel
Ensure the rear wheels are parallel, → qualified
technician/dealer
Too little tension in front wheel bearing
block
Tighten the nut on the bearing block axle slightly,
→ qualified technician/dealer
The front wheels
wobble when moving
fast
Front wheel has worn smooth
Change front wheel, → qualified technician/dealer
56
1587473-B
