Adjusting Caster Headtubes - Invacare Orbit 1073955 Owners Operating & Maintenance Manual

SECTION 8—FRONT CASTERS

Adjusting Caster Headtubes

NOTE: For this procedure, refer to FIGURE 8.3.
NOTE: Caster headtubes that are perpendicular to the floor will roll better, track straighter and
minimize any ʺ3‐wheelingʺ of the wheelchair.
1. Make sure the wheelchair is on a flat surface.
2. Loosen, but do not remove the top mounting screw and locknut, which holds the
adjustment cam in place, and secures the caster headtube to the headtube mounting
plate.
3. Position a large right triangle or ʺLʺ square on the flat surface and against the caster
headtube.
4. Move the caster headtube back and forth until the caster headtube is perpendicular to
the ground/floor.
5. While holding the caster headtube perpendicular to the ground/floor, securely tighten
the top mounting screw securing the adjustment cam in place to the headtube
mounting plate.
6. Make sure the caster headtube is still perpendicular to the ground/floor by placing the
large right triangle or ʺLʺ square on the flat surface and against the caster headtube.
7. Securely tighten the bottom mounting screw and locknut that secure the caster
headtube to the headtube mounting plate.
Adjustment Cam
™
Orbit
FIGURE 8.3 Adjusting Caster Headtubes
60
Caster Headtube
Caster/Fork
"L" Square
Part No. 1073955