ARB RD90 - Manual (Page 23)

3 Installing the Air Locker
21
NOTE : The drawing in Figure 13. shows a cross section of
the bulkhead body installed into the clamshell. This
shows how critical it is to position the bulkhead port
on an angle of approximately 25º in the deepest part of
the cavity in the clamshell to allow room for the seal
housing tube.
c Tap the hole from the outside using a ¼” NPT pipe tap.
c Remove any sharp edges from the hole that may chip-off and fall
into the housing.
c Carefully remove the rag and inspect with a service light inside the
housing to insure no metal filings are left behind.
3.8 A B Installing the Bulkhead Fitting
c To obtain an oil tight seal, apply a thread sealant to the threads of
the bulkhead body, screw it into the bulkhead port (from the
outside), and tighten.
c Wipe the area clean of any excess thread sealant (inside and
outside of the housing).
3.9 A B Installing the Differential Center
c Apply a thin film of high pressure grease to the outside of the
tapered roller bearing cup supplied with the Air Locker.
c Using a bearing press or arbor press, press the bearing cup into the
seal housing (narrow edge first) until it stops at the end of the bore.
NOTE : Do not install the bearing cup upside down. Refer to
Figure 14. for the correct installation direction.
Be careful not to bend the seal housing tube or
damage the O-ring grooves.
Figure 14.