Wolturnus - wheelchair for activ use - user manual 2017
Wolturnus - wheelchair for activ use - user manual 2017
Cleaning and maintenance
Cleaning and maintenance
8.3 Changing a Tire
If a tire is punctured, the user or a helper may be able to change it without assistance.
The procedure requires having strong hands, practical ability and suitable tools. It is advisable
to have a puncture repair kit and an air pump for emergencies (excluding situations with punc
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ture proof tires). Suitable air pumps, puncture repair kits or puncture sprays that fill the tire
with expanding foam can be purchased at most bicycle shops.
Removing tires and tubes
• Gently pull the tire edge over the edge of the rim with a tire lever (or two, if it is sitting very
tightly). Take care not to damage the rim or the tube (Image 61).
• Screw off the valve nut and pull the valve out from the rim and the rim tape.
• Pull out the tube from between the tire and the rim (Image 62).
Repair and check-ups
• Repair the tube according to the instructions in the repair kit or replace it with a new tube.
• Before remounting the tire and tube, make sure that no foreign objects that may have
caused the puncture are caught in the rim or tire.
• Ensure that the rim tape is intact. It protects the tube against damage from the spokes.
• Push the tube into place between the tire and the rim.
Mounting tires
• Gently pull the clear tire edge over the edge of the rim. Starting with the valve.
• Check that there are no twists at all in the tube, otherwise air can get out.
• Work the whole way around until the last section of the tire edge is taut and can be edged
into place with one or two levers.
Pumping tires
• Check on both sides that the tube is not caught between the tire edge and rim.
• Push the valve lightly in and pull It out again to make sure that it is not caught on the tire
edge.
• Fill the tire with air to the point where it is still possible to press it in with a thumb. If the
control lines on both sides of the tire indicate the same distance to the rim edge, the tire
is centred. If the tire is not centred, let some air out and adjust the tire until it is centred.
Now pump up the tire to its maximum working pressure (see the side of tire) or at least 3.5
bars (350 kPa). Then screw the dust cap on, tightly.
Ensure that the tires have the correct pressure before using the chair.The maximum air pres
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sure limit is marked on the side of the tire. It must always be on a minimum of 3.5 bars (350
kPa) on the rear wheels.Like push wheel locks, the knee-lever wheel locks are only effective
when the air pressure is sufficiently high and when they are correctly positioned.(When
locked, the brake pad should push the tire in 5mm (allowing for technical alterations).
CAUTION!
Image 61 Pull the tire edge over the rim
Image 62 Pull out the tube
NB: Pneumatic tires give a good driving experience. Solid tires can be used in work situations
where risks of punctures due to grit or other objects might occur.
INFORMATION
Handbikes
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Handbikes
