Swivel Chair Replacement Parts
When to replace?
Hub liners can become loose, broken or worn causing annoying rocking and suprisingly severe damage to expensive component parts. Loose and broken are easily recognized. A worn hub liner will not be smooth on the inside where the Post inserts into. Contrary to popular belief, the hub liner is not threaded! If it feels like there are threads, replace it.
Hub Liner #98 Installation
Style #98 hub liner has two characteristics to facilitate installation.
1. A small "notch" in the top surface of the collar portion.
2. A small raised squarish "bump" on the plastic tube about 5/8" down from the collar.
Also note that the metal tube into which the plastic hub liner inserts has either a notch or a stamped hole. The "notch" on the top surface of the plastic Hub liner collar is to visually line up the "bump" with the space provided for in the metal tube.
As an alternative, you may consider cutting off and removing the raised "bump" with a sharp object., keeping the hub liner smooth.
All Installations
Using a short piece of 2 x 4" about 3-4" long and a heavy hammer (16 oz.. and more), lay the 2 x 4" flat on the plastic collar and strike to get the hub liner started straight into the metal tube without any binding (cleaning may be necessary). When satisfied everything looks well, continue driving the plastic hub liner until it barely rests on top of the metal tube flange (a mating metal collar).
