6
On the air cylinder (1), the right-hand valve adjustment screw (F), is to adjust the knee flexion
damping. The left-hand valve adjustment screw (E) is to adjust the knee extension damping.
After the stance friction brake has been optimally adjusted, the knee flexion damping can be
adjusted utilizing a 3mm hex head wrench.
Valve screw rotation:
Clockwise (+) increases flexion damping force.
Counter- Clockwise (-) decreases flexion damping force.
6. Adjustment of Pneumatic Controls (Fig 6)
Knee Extension Damping Valve
Adj. screw 3mm hex
Knee Flexion Damping Valve
Adj. screw 3mm hex
Important!
Be aware that the brake sensitive adjustments and pneumatic valve adjustments will
compliment each other and can affect the patients walking speed. This can occur by
the pneumatics speed/force input affecting the latest brake sensitivity adjustment
performed, so it is important to verify through visual and verbal patient feedback
during walking in the parallel bars to reach the optimum settings.
Fig. 6
Note:
Increasing (+) the flexion damping force may increase the extension damping force
making knee extension speed to become slow. To increase the knee extension speed, adjust
Knee Extension Damping Counter- Clockwise (-) to decrease extension damping.
