Adjusting Forks - Invacare At'm Owner's Operator And Maintenance Manual

ADJUSTING FORKS

NOTE: For this procedure, refer to FIGURE 10.2.
1. Remove the dust covers from the caster headtubes.
2. To properly tighten the caster journal system and guard against flutter, perform the
following check:
A. Remove battery pack from wheelchair. Refer to Removing/Installing the Battery
Pack on page 35.
B. Tip back the wheelchair to floor.
C. Pivot both forks and casters to top of their arc simultaneously.
D. Let casters drop to bottom of arc (wheels should swing once to one-side, then
immediately rest in a straight downward position).
E. Adjust locknuts according to freedom of caster swing.
F. Bring wheelchair back to driving position.
G. Install the battery pack. Refer to Removing/Installing the Battery Pack on page 35.
3. Test wheelchair for maneuverability.
4. Readjust locknuts if necessary, and repeat STEPS 1-3 until correct.
5. Snap dust covers into the caster headtubes.
Part No. 1125035
FIGURE 10.2 - ADJUSTING FORKS
41
SECTION 10—WHEELS AND CASTERS
Dust Cover
Locknut
Washer
Caster Headtube
Fork Stem
Fork
Front Caster
At'm