2 Issue 4
34
Chair adjustments
Fig. 47
Fig. 46
Castor angle adjustment
For optimum performance, the
castor housing should always be at
90
O
to the floor, (perpendicular to
the ground). This adjustment is
made with an eccentric (offset)
attachment bolt mechanism (1). To
change the angle, place the chair
on a flat surface (such as a table).
Remove the 10mm A/F bolt nuts (2)
from the rear side of the castor
housing (3). You will note that the
castor housing is slotted at the side
for adjustment. Place a large right
angled object (4) against the flat
surface and the front surface of the
castor housing (5). This will align
the castor stem rotational axis
perpendicular to the flat surface.
Rotate the bolts independently until
they fall into position. When the
alignment is satisfactory, re-tighten
the two retaining bolts. Repeat the
process for the other castor.
Recommended torque setting:
8-10 Nm (Fig. 46).
Castor reversibility
The castor plate is generally
mounted in a forward-facing
position (1). However, if additional
footrest clearance is necessary, the
castor plate can be reversed (2).
This will position the castor plate
rearward to allow more clearance.
To reverse the castor plate, the left
plate should be mounted on the
right side of the frame, and the right
plate should be mounted on the left
side of the frame (Fig. 47).
5
2
3
4
1 FORWARD FACING
2 REAR FACING
90°
1