Invacare M91R Owners Manual - Page 101

Adjusting Forks

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8.13Adjusting Forks  For this procedure, refer to FIGURE 9. This procedure must be performed by a qualified technician. This procedure applies to both Forks. 1. Remove the dust cover. 2. To properly tighten caster journal system and guard against flutter, perform the following check: A. Tip the wheelchair forward, toward the 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 the dust cover into the caster headtube ensuring that the tabs are under the side shroud. Base Frame Side Shroud Fork 8 SETUP/MAINTENANCE Tabs Dust Cover Locknut Washer Caster Headtube FIGURE 9 Adjusting Forks Part No 1143153 101 Invacare® Pronto® M91™

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8
SETUP/MAINTENANCE
Part No 1143153
101
Invacare® Pronto® M91™
8.13Adjusting Forks
1.
Remove the dust cover.
2.
To properly tighten caster journal system and guard against flutter,
perform the following check:
A.
Tip the wheelchair forward, toward the 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 the dust cover into the caster headtube ensuring that the tabs
are under the side shroud.
FIGURE 9
Adjusting Forks
For this procedure, refer to FIGURE 9.
This procedure must be performed by a qualified
technician.
This procedure applies to both Forks.
Fork
Base Frame
Tabs
Locknut
Dust
Cover
Washer
Side
Shroud
Caster
Headtube