wheel assemblies using tubeless tires. Install the wheel
seal on the flange. Secure the locking ring according to
the assembly instructions required by the applicable
According to Federal Specification BB-N-411,
water-pumped nitrogen should be used to inflate tires.
When nitrogen is not available, dry, oil-free air may be
used. Nitrogen is provided in a number of mobile carts.
The NAN-2 and NAN-3 carts are shown in figure 7-21.
Tire shops are generally equipped with a bulkhead
All high-pressure inflation sources should be
equipped with a regulator that limits the line pressure to
the remote inflator assembly. The regulator should be
set to provide a controlled inlet pressure to the inflator.
It should not exceed the required tire inflation pressure
by more than 50 percent or 600 psi, whichever is less.
The tire inflator assembly kit is an excellent
maintenance device if it is used and cared for according
to the NAVAIR 17-1-123 manual. See figure 7-22. This
manual includes the operation instructions, main-
tenance instructions, and illustrated parts breakdown
for the remote inflator assembly and dual chucks stem
Figure 7-21.--Nitrogen servicing units.
The tire inflator assembly kit consists of a remote
controller, a low- and high-pressure gauging element,
removed) in the wheel assembly. Removing the valve
and a 10-foot service hose. The remote inflator
core prevents unseating the wheel seal by the pressure
assembly should be calibrated upon initial receipt,
built up when the tire is installed. The wheel seal should
before being placed in service, and every 6 months
be lubricated with the same lubricant and in the same
thereafter. The unit is equipped with a built-in relief
manner as previously mentioned for split or divided
Figure 7-22.--Tire inflator assembly kit.