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6.2.2 Maintenance instructions
Before setting out:
Check brake unit for correct function.
Operate brake lever until it reaches
its limit. The locked wheels should not
be able to turn under operating con-
ditions. If they can still turn, the
brakes must be repaired by an au-
thorized specialist workshop.
Check toggle joint brake for wear.
Move brake lever sideways. There
should not be excessive play.
Check tyre pressure.
Standard values
Standard tyre: 2.5 bar
Smooth running tyres: 7,5 bar
Note:
Always observe the pressure stated
on the tyre.
Check tyre profile.
If the tyre profile is worn down or if
the tyre is damaged, consult an au-
thorized specialist workshop for re-
pairs.
50
Check rear tubes for stability.
In the event of deformation or crack-
ing around the soldered seams, con-
tact an authorised repair centre im-
mediately for repair. – Danger of ac-
cidents!
Every 8 weeks
(depending on frequency of use)
Lubricate the following components
with a few drops of oil:
– Cross brace bearings.
– Moving parts of the locking
mechanism.
– Brake lever bearings.
Components must be free from used
oil residues before lubrication.
Please ensure that excess oil does not
contaminate the environment (e.g.
your clothing)
Check that all screwed connections
are tight.
Check that the sliding handles are
tight by forceful twisting.
Every 6 months
(depending on frequency of use)
Check:
– Cleanliness, see Care section.
– General condition, see Care and
maintenance section.
6.2.3 Punctures
If pneumatic tyres are punctured by
sharp objects such as nails, screws, glass
slivers etc., the puncture should be re-
paired (by mending the inner tube) or
the tube replaced.
Attention:
!
Before repairing a tyre, the air valve
must be opened in order to let out
the air remaining in the tube.
6.2.3.1 Tyre change on the drive
wheels
Attention:
!
The outer part of the tyre must be
removed and replaced using appro-
priate tyre levers (bicycle accessories).
Do not use a screwdriver or other
pointed or sharp-sided object as a
lever!
74
1
75
6.2.3.2 Tyre change on the swivel
wheels
Before replacement or repair, the swivel
wheel axle must be removed (fig. 74).
Note:
Observe the position of any sleeves
or washers for reassembly.
To change the wheel, first screw out the
screws on the outer edge of the rim (fig.
75/
). Now separate the rim halves.
51
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