33
2 Issue 4
Chair adjustments
Fig. 45
Fig. 44
Castor bearing play
To adjust the castor bearing play
(Fig. 44), prise off the dust cover
(1) from the bearing housing (2),
and adjust the play by tightening
the retaining nut (3), using a 19mm
A/F socket spanner. Tighten 1/8
turn at a time until the play is taken
out, but still allowing free rotation of
the castor fork (4) assembly.
Replace the dust cover.
1
3
2
4
4
5
3
1
2
Seat height adjustment
Two-hole castor forks (Fig. 45)
allow you to interchange 125mm
(5"), 150mm (6") and 200mm (8")
castor wheels and to adjust the
seat height. To adjust, remove the
axle bolt (1) and nut (2) with a
13mm A/F spanner and remove the
castor wheel (3). Either change the
castor wheel size and/or position
the castor wheel upward or
downward in the desired pre-drilled
holes (4) 25mm (1") apart on the
castor fork (5). Replace the bolt
and tighten to 27Nm torque.