Quickie
®
NITRUM
249817 Rev. A
24
IX. DEALER SERVICE AND ADJUSTMENT
J. CASTER FORK ADJUSTMENT
Adjusting Caster Fork Angle, Directional Stability, and Caster Fork Height:
The caster fork adjustment has three settings: Caster Fork Angle, Directional Stability, and Caster Fork
Height. The settings for directional stability are combined: by twisting the slighly angled caster axle (A)
(Fig. 44), the fork moves inward (B) or outward (C) (Fig. 45). At the same time, the height of the fork also
changes by 1 mm for every full rotation of the caster axle.
The detailed instructions for making the adjustments are described in the following section.
NOTE: the following adjustments may only be made by Sunrise Medical authorized dealers.
NOTE: a service video about this can be found on the Sunrise Medical YouTube channel.
WARNING
•
Faulty adjustments, or adjustments that have not been carried out correctly, may cause damage to
the wheelchair or result in a fall and severe injuries to the user and other people.
•
Wher
ever torque settings are specifi ed, it is strongly recommended that a torque wrench (not
included) be used to verify correct torque specifi cation is achieved.
•
Some of the screws that are used during manufacture are fi tted with threadlock (blue or yellow
dot on the thread) and can be undone and tightened again up to three times before they must be
replaced with new screws and threadlock. Alternatively, apply Loctite™ 243 threadlock on the screws
and re-fi t them.
1. Setting the directional stability:
•
Insert special Sunrise Medical tool (torque wrench, p/n 66009203) into a
3
/
8
-in torque
wrench.
•
Undo the round nut between the fork and caster connection with the Spanner Wrench
(Fig. 46).
•
Rotate the caster inward, place a 90° setting gauge on the front of the fork and grasp the
caster axle between the round nut and the fork with a fl at 19mm open-end spanner wrench
(p/n 66009205) and rotate it until the front of the fork is level with the setting gauge (Fig. 47
and Fig. 48). To do this, rotate it by a maximum of 90° in one direction, to avoid accidentally
changing the height.
•
After the adjustment has been made, keep the caster axle in position with the open-end
spanner while tightening the round nut to a torque of 28 Nm.
Note: The fork angle must be set after adjustment has been made (see 3: Setting the caster fork
angle).
44
44
47
45
46
46
45
0
15
15
30
30
45
TORQUE !
48
47
48
Summary of Contents for Quickie Nitrum
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