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939504514 Rev F
Height Adjust Column Assembly Replacement
(also applies to Base, and Telescopic Cover Replacement)
Base
Height Adjustment Column
Tapered Standpipe
Plastic Telescopic Cover
1.
Adjust chair to maximum seat height.
2.
Turn chair upside down and set on stand or table.
3.
To remove base, tap firmly alternately on opposite arms near
hub with rubber or leather mallet.
4.
Slide plastic telescopic cover all the way down column.
5.
Remove height adjust column from chair control using
disassembly tool for taper fit joint, or twisting &
pulling using pipe wrench.
6.
Remove telescopic cover from old column assembly, and
install on new height adjust column assembly
by pushing it down from top of cylinder column to just past the
taper.
7.
Install new height adjust column assembly by inserting
tapered cylinder end into chair control housing
and tapping firmly with rubber mallet.
8.
Replace base assembly by inserting hub onto tapered
standpipe of height adjust column, then tap firmly
with rubber mallet.
9.
Turn chair right side up and seat taper fit joints by sitting in
chair.
