Otto Bock SKIPPI, Service Manual

Page: 38 / 72

Service Work
Skippi 38 | Ottobock
6.14 Tyres
NOTICE
Damage to the tyres.
Replace the tyres when they are bald or show cracking or other damage.
Always change the tyres in pairs. Tyres with differently worn treads can negatively affect the driving
characteristics of the wheelchair.
For changing tyres, place the Skippi on a level surface and support it to prevent it tilting or
falling over.
The front wheels are puncture-proof ones and can only be changed as a whole. A puncture-
proof insert or the casing are not available as spare parts. For disassembling the front wheels
you need a size 6 Allen wrench.
Loosen the screw and remove the wheel. Inspect the axle to see if it can be reused.
Fig. 34 Removing the wheel
For mounting the new wheel, position the metal bushing between the wheel and caster fork
and insert the axle screw from the outside. Make sure that the locknut on the other side of the
fork is in position. Hand tighten the screw.
Drive wheels
Two drive wheel versions are available for the Skippi: with pneumatic tyres (standard equip-
ment) and with puncture-proof tyres. For working on the drive wheels, you need a size 6 Allen
wrench and tyre iron.
First loosen the 4 Allen head screws on the front side to disassemble the drive wheels from
the drive unit sustainer (Fig. 34, left). The drive wheels have two-piece rims so that the casing
or inner tube are easy to replace. For separating the rim, loosen the 5 Allen head screws on
the rear side of the wheel (Fig. 34, right). For pneumatic tyres only: pull out and replace the
defective inner tube. Use a standard inner tube repair kit for bicycles for repairing the inner
tube.
Proceed in the reverse order to assemble the drive wheels. Firmly tighten the screw connec-
tion on each drive wheel hub to 25 Nm (Fig. 34, left). For pneumatic tyres only: reinflate the
inner tube (2.4 bar/240 kPa/35 PSI).