ARB RD106 - Manual (Page 17)

4 Installing the Air Locker
15
c If no drainage slot is present at the upper left-hand side (refer to
Fig.6.) of the housing at all, then a slot (not a hole) will have to be
created here as clearance for the seal housing tube
(Refer to Section 3.8 Reinstalling the Bearing Caps).
c If drainage exists but is inadequate then slots or holes should be
cut into the housing on the upper and lower side of the tubes where
required.
NOTE : Figure 9. shows upper and lower drainage slots cut
into a bearing seat which had no existing drainage at
all before modification.
Figure 9.
c Remove any sharp edges left behind by the modifications that
could break off and fall into the cavity.
c Make sure any grinding dust, filings or drill chips left behind by
cutting the drainage slots are completely cleaned out of the
housing.
c Check that the axle air vents are clear and working correctly.