Usage instructions SPEEDY 4all & 4you & 4teen
40
Figure 105: Caster fork with quick release axle and
locking knob
When
assembling the caster fork with
quick-release axle,
press the locking knob
again and insert the caster fork rotary axle into
the caster wheel bearing block. When doing
this, particular attention must be paid to ensur-
ing that the locking knob springs all the way
out again after attaching the fork, as the forks
are otherwise not secured correctly. You will
know that if you can see the index groove (Fig.
75).
22.4 Adjustment of the caster fork ro-
tary axles
The following instructions are intended
for and may only be carried out by a rehabilita-
tion specialist dealer or PRO ACTIV
To ensure that the product has good properties
when steering and driving straight ahead, the
caster wheel axle should be adjusted to be
vertical to the level ground.
Adjustments on the caster wheel axles can be
required for the following reasons:
The tipping point and/or seat heights have
been changed.
The caster wheel axles are no longer verti-
cal due to a fall or an impact.
The flattering of the caster wheels should
be reduced.
To adjust the caster fork rotary axles, the
product should be standing on a level surface
and the wheel track of the drive wheels should
have already been adjusted (Chapter 21.2).
Now
check
whether the caster fork rotary ax-
les are positioned perpendicular to the level
ground. For this purpose, place an angle with
height adjustable slider on the front edge of the
caster wheel bearing blocks. The slider should
be aligned at the middle of the caster wheel
bearing block.
Information:
If the front edges of the caster wheel bearing
blocks are perpendicular to the level ground,
the caster fork rotary axles are as well.
Observe that the front edges of the caster
wheel bearing blocks are slightly rounded.
Thus, the distance above and below between
the slider of the angle and the front edge of the
caster wheel bearing blocks must be the same
size.
Figure 106: Checking the adjustment of the caster
wheel axles
Tool recommendation:
The angle with slider can be ordered from
PRO ACTIV (order number: 8000 901 000).
Locking knob on
inside of fork
Middle alignment
of the slider and
caster wheel
bearing block
Slider
Angle
