Invacare 3GSEAT Owners Manual 2 - Page 112

Adjusting Forks

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SECTION 12-MOTOR LOCKS/WHEEL LOCKS/FORKS Wheel Lock Mounting Bracket Drive Wheel Wheel Lock Wheel Lock Shoe 5/32 to 5/16 - inch Gap NOTE: Illustration depicts wheel lock for motor/gearbox assembly. FIGURE 12.7 Adjusting Wheel Locks Adjusting Forks NOTE: For this procedure, refer to FIGURE 12.8. 1. Remove the dust cover (not shown) from the caster headtube. 2. To properly tighten caster journal system and guard against flutter, perform the following check: A. Tip back the wheelchair to floor. B. Pivot both forks and casters to top of their arc simultaneously. C. Let casters drop to bottom of arc (wheels should swing once to one-side, then immediately rest in a straight downward position). D. Adjust locknuts according to freedom of caster swing. 3. Test wheelchair for maneuverability. 4. Readjust locknuts if necessary, and repeat STEPS 1-3 until correct. 5. Snap dust cover into the caster headtube. Locknut NOTE: Components Fork exploded for clarity. There is no need to remove the fork from the base frame. 3G Storm Series® Wheelchairs FIGURE 12.8 Adjusting Forks 112 Part No 1134791

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SECTION 12—MOTOR LOCKS/WHEEL LOCKS/FORKS
3G Storm Series® Wheelchairs
112
Part No 1134791
FIGURE 12.7
Adjusting Wheel Locks
Adjusting Forks
NOTE: For this procedure, refer to FIGURE 12.8.
1.
Remove the dust cover (not shown) from the caster headtube.
2.
To properly tighten caster journal system and guard against flutter, perform the
following check:
A.
Tip back the wheelchair to floor.
B.
Pivot both forks and casters to top of their arc simultaneously.
C.
Let casters drop to bottom of arc (wheels should swing once to one-side, then
immediately rest in a straight downward position).
D.
Adjust locknuts according to freedom of caster swing.
3.
Test wheelchair for maneuverability.
4.
Readjust locknuts if necessary, and repeat STEPS 1-3 until correct.
5.
Snap dust cover into the caster headtube.
FIGURE 12.8
Adjusting Forks
Drive Wheel
Wheel Lock
Mounting
Bracket
Wheel Lock
Wheel Lock Shoe
5/32 to 5/16 - inch Gap
NOTE: Illustration depicts wheel lock for motor/gearbox assembly.
Locknut
Fork
NOTE: Components
exploded for clarity. There is
no need to remove the fork
from the base frame.