Adjusting forks – Activeforever Invacare Pronto M41 Power Wheelchair with Semi Recline Seat User Manual
Page 52
SECTION 11—SHROUD AND WHEELS
52
Part No. 1143206
Removing
1. Remove the mounting screw, two spacers and locknut that secure the existing caster
to the fork.
2. Remove the existing caster from the fork.
Installing
1. Position the new/existing caster into
the fork.
2. Reinstall the mounting screw, two
spacers and locknut. Securely tighten.
3. Torque locknut to 10 ft‐lbs (120 in‐lbs).
4. Loosen the locknut 1/8 of a turn.
5. Move the caster side to side.
NOTE: If the caster moves side to side, tighten
the locknut slightly. Repeat STEP 4 until there
is no side to side movement of the caster.
FIGURE 11.3 Removing/Installing Casters
Adjusting Forks
NOTE: For this procedure, refer to FIGURE 11.4.
1. Remove the headtube cap.
2. To properly tighten caster assembly and guard against flutter, perform the following
check:
A. Tip back the wheelchair.
B. Pivot both forks and casters to top of their arc simultaneously.
C. Let casters drop to bottom of arc (casters should swing once to one‐side, then
immediately rest in a straight downward position).
D. Adjust locknut according to
freedom of caster swing.
E. Test wheelchair for
maneuverability.
F. Readjust locknut if necessary, and
repeat STEPS 2‐3 until correct.
G. Replace headtube cap.
NOTE: Components exploded for clarity. There
is no need to remove the fork from the base
frame.
FIGURE 11.4 Adjusting Forks
Fork
Mounting
Screw
Locknut
Caster
Spacer
Spacer
Headtube
Fork
Locknut
Washer
Headtube Cap
Caster
Spacer