Operation and maintenance manual

2-14
Wheels and Tyres
If tyres on the vehicle were inflated at the factory with dry nitrogen gas, the tyre
walls will be marked 'N' and the following factory installed decal will be found
mounted on the fenders.
NOTICE
TYRES ON THIS VEHICLE ARE FACTORY INFLATED WITH DRY
NITROGEN. IT IS RECOMMENDED THAT DRY NITROGEN BE USED
EXCLUSIVELY FOR ALL TYRE PRESSURE ADJUSTMENTS AS WELL AS
INFLATION OF REPLACEMENT TYRES.
Nitrogen gas improves tyre pressure retention, increases tyre life by reducing
carcass oxidation from within, minimizes rim rust, and has no known detrimental
effect on the tyre. It also reduces the potential of a tyre explosion because it is an
inert gas and will not support combustion inside the tyre. The same tyre inflation
pressure used for air inflation should be used for nitrogen inflation. Refer to
Section 160-0050, Nitrogen Inflation of Tyres of the vehicle Maintenance Manual for
recommended procedures for inflating and pressure adjusting tyres with dry
nitrogen gas. Only proper nitrogen charging equipment operated by personnel
trained in its use should be used.
WARNING
Never mix components of one manufacturer’s rims with those of
another. Using the rim base of one manufacturer with the lock ring of
another or vice versa is dangerous. The lock ring of one may not fully
engage with the lock ring groove of the other. Always consult the rim
manufacturers for proper matching, assembly and safety instructions.
Also, use and servicing of damaged, worn out or improperly assembled
rim assemblies is a very dangerous practice. Failure to comply with the
above warnings could result in an explosion from tyre pressure causing
serious property damage and serious personnel injury or death.