4 Installing the Air Locker
24
NOTE : Excessive tightening of the center compression nut is
not necessary to form a good seal around the tube
and may damage the O-ring, the seal housing tube, or
the threads of the compression nut.
NOTE : Make sure the seal housing tube is all of the way into
the center compression nut while tightening it.
Again check that no part of the seal housing tube comes in contact
with the moving differential components. Less than 8mm [5/16”]
should be considered too little clearance. Gently bend the tube
away from moving parts if necessary.
4.10
Bench Testing the Air Locker
To test the
Air Locker
, when 620kPa [90 PSI] shop air is applied to
the seal housing tube, the
Air Locker
should engage.
Check all fittings and the seal housing for air leaks.
Rotate the differential carrier by turning the pinion flange whilst
applying air pressure.
NOTE : An accurate way to test for air leaks is to fit a shut-off
valve to an air pressure gauge. (ARB part # 0770005
shown in Fig.
19.
). Once 620 KPA [90 PSI] is reached
close the valve, disconnect the air hose, and watch to
see if there is any drop in pressure. If so, this will
indicate an air leak.
Figure 19.
If a leak is found to be present, spray a soap and water mixture
onto the bulkhead air fitting. Bubbles should appear at any leak
points.
NOTE : Do not spray this soapy mixture inside the differential
.
