Usage instructions LITTY 4all & 4you
29
21.1.2 Setting the brake
The following instructions are intended
for and may only be carried out by a rehabilita-
tion specialist dealer or PRO ACTIV
Settings on the brake could be necessary for
the following reasons:
You have changed the tyre or the tyre
pressure.
You have changed the wheel tracking of
the drive wheels.
The brake is pulling unevenly or insuffi-
ciently after extended use.
To adjust the knee lever brake, proceed as fol-
lows:
1. Initial situation: Drive wheels mounted on
the product and the knee lever brakes
open. The drive wheels have the specified
inflation pressure.
2. Loosen the M5 fixing screws (AF 4 mm)
which are used to attach the brake to the
brake mounting bar on the brake mount.
Figure 61: M5 fixing screws
Figure 62: Brake mount and brake mounting bar
3. Position the open brake so that there is ap-
prox. 3 mm clearance between the brake
bolt and tyre up to a maximum of 4 mm.
You can use the adjustment range pro-
vided by the slots on the brake mounting
bar.
Figure 63: Distance between brake bolt and tyre of
approx. 3 mm to maximum 4 mm, with opened
brake
4. Tighten the M5 fixing screws (AF 4 mm)
again to 4
Nm.
5. Then check the correct setting of the
brakes: On a slope (7° gradient) the prod-
uct should stand firm with the brake ap-
plied. This is the case if, with the brake ap-
plied, the tyre is depressed or deformed by
approximately 4
mm by the brake pin (at
the specified tyre inflation pressure). When
the brake is open, the distance between
the braking bolt and the tyre is approx. 3 to
maximum 4 mm.
M5 fixing screws
Brake mounting
bar with slots
Brake mount
