15
“Movement is life!”
Spring
Figure 12: Knee Extension Limiter, Exploded View
Bumper
Bolt
Spacers (optional)
Nut
Pivot Block
Barrel Nut
Figure 11: Slide Triangle to Allow
Free Movement
H. EXTENSION LIMIT AND FORCE ADJUSTMENT [Active Leg Rest Only]
1. Remove the calf protector to expose the lower end of the knee angle tensioning device.
2. Slide the triangular plate [A] (near the child’s knees) toward the back of the chair to depress the button on the black
ratchet.
3. Remove the bolt connecting the pivot block to the lower leg rest rigging.
4. Remove the pivot block and rubber bumper.
5. Use a ¾” wrench to remove the nut from the spring assembly.
6. Remove the springs and spring seat.
7. Change the spring.
8. Reinstall the spring seat. Install spacers if desired (
Fig. 12
).
9. Install the nut. The spring must be compressed slightly to install the nut. Use a ¾” wrench to tighten the nut until it
is flush with the end of the tension tube.
10. Install the rubber bumper over the ¼” shaft.
11. Thread the pivot block onto the ¼” shaft. The pivot block does not have to be tight. Make sure that the shaft does not
protrude into the ¼” hole for the bolt. Three to four turns of the pivot block is ideal. Thread-locking glue (such as
Loctite) is NOT necessary since this part cannot rotate once installed.
12. Install the bolt to connect the pivot block to the lower leg rest rigging.
13. Reinstall the calf protector to cover the lower pivot point.
Make sure calf
protector is always
installed.
A
Spring Seat
Tension
Tube