ARB RD90 - Manual (Page 19)

3 Installing the Air Locker
17
3.5.2 B Clamshell Housing Preload
c Assemble the shim pack determined earlier as ‘D’ (Fig.7.) into the
bearing bore of the deep half of the clamshell.
c Using a bearing press or arbor press, press one of the original
bearing cups 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.
c With the deep half of the clamshell sitting firmly on a horizontal
surface, set the Air Locker into the bearing cup inside the clamshell.
c Assemble the bearing cup supplied with the Air Locker kit onto the
bearing cone now positioned at the top of the Air Locker.
c Put any remaining shims from the Air Locker shim kit (supplied)
together and measure the total thickness.
c Set the shim pack on top of the bearing cup (i.e., the position of
shim pack ‘E’ in Fig.10.).
c Carefully assemble the shallow half of the clamshell over the top of
the Air Locker.
c Measure the preload gap that exists between the two halves of the
clamshell housing with a feeler gauge. (Refer to Fig.10.)
Figure 10.