3 Installing the Air Locker
15
3.5 Preload Shim Measurement
In order to preload the tapered roller bearings in your Air Locker,
measurements need to be taken so that a value can be calculated for
the total shim thickness ‘D’ in Figure 9.
Figure
Assemble the 3mm ARB master shim and the shim pack
determined earlier as ‘B’ (Fig.4.) into the bearing bore of the deep
half of the clamshell.
Using a bearing press or arbor press, press the appropriate bearing
cup into the bottom of the same bearing bore (i.e., until it stops
against the shim pack).
HINT : You should not be able to rotate the shim pack
underneath the bearing cup if it has been pressed in
far enough.
With the deep half of the clamshell sitting firmly on a horizontal
surface, set the Air Locker into the bearing cup inside the clamshell.
Bend the seal housing tube so that it points straight away from the
seal housing flange.
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