ARB RD99 - Manual (Page 20)

3 Installing the Air Locker
18
3.7 Profiling the Seal Housing Tube
Without using sharp, jagged tools such as pliers (usually your hands
are the best tool for this job), gently bend the seal housing tube so that
it runs closely around the outside of the differential carrier and ring
gear and through the bulkhead port hole as shown in Figure 10.
NOTE : It is also a good idea to keep the tube away from the
bearing caps or any other part of the differential
casting as any contact due to vibration or shock may
wear the tube and eventually cause a leak.
IMPORTANT:
In order for the seal housing to float and self center on the
bearing journal after the tube is connected to the bulkhead
fitting, the seal housing tube must not be left pulling against
the seal housing. Therefore, it is critical to ensure that the
tube is not under any tension. To avoid this always leave
the tube long enough so that a loose hook shape can be
formed between the seal housing and the bulkhead.
Figure 10.