120H and 135H Motor Graders Tire Inflation with Nitrogen Caterpillar

Tire Inflation with Nitrogen

AVSpare recommends the use of dry nitrogen gas for tire inflation and for tire pressure adjustments. This includes all machines with rubber tires. Nitrogen is an inert gas that will not aid combustion inside the tire.

------ WARNING! ------

Proper nitrogen inflation equipment, and training in using the equipment, are necessary to avoid over inflation. A tire blowout or rim failure can result from improper or misused equipment and personal injury or death can occur.

A tire blowout and/or rim failure can occur if the inflation equipment is not used correctly, due to the fact that a fully charged nitrogen cylinder's pressure is approximately 15000 kPa (2200 psi).

There are other benefits to using nitrogen in addition to reducing the risk of an explosion. The use of nitrogen for tire inflation lessens the slow oxidation of the rubber. Use of nitrogen also slows gradual tire deterioration. This is especially important for tires that are expected to have a long service life of at least four years. Nitrogen reduces the corrosion of rim components. Nitrogen also reduces problems that result from disassembly.

------ WARNING! ------

A tire blowout or a rim failure can cause personal injury.

Use a self-attaching inflation chuck and stand behind the tread when inflating a tire, to prevent personal injury.

Note: Do not set the tire inflation equipment regulator higher than 140 kPa (20 psi) over the recommended tire pressure.

Use 6V-4040 Inflation Group or an equivalent inflation group to inflate tires with a nitrogen gas cylinder.

Reference: For tire inflation instructions, refer to Special Instruction, SMHS7867, "Nitrogen Tire Inflation Group".

For nitrogen inflation, use the same tire pressures that are used for air inflation. Consult your tire dealer for operating pressures.

Information System:

D6M Track-Type Tractor Fuel System Secondary Filter - Replace
D5M Track-Type Tractor Brakes, Indicators and Gauges - Test
651E Wheel Tractor-Scraper Tire Shipping Pressure
D5M Track-Type Tractor Air Conditioner - Test
651E Wheel Tractor-Scraper Circuit Breakers - Reset
651E Wheel Tractor-Scraper Cab Air Filter - Clean/Replace
651E Wheel Tractor-Scraper Braking System - Test
D6M Track-Type Tractor Power Train Steering Clutch and Brake and Foot Brake Controls Linkage
Cat Commercial Diesel Engine Fluids Recommendations Reference Material
3208 Marine Engine S·O·S Coolant Analysis
Cat Commercial Diesel Engine Fluids Recommendations Extended Life Coolant Cooling System Maintenance
631E Series II Wheel Tractor-Scrapers Coolant Recommendations
651E Wheel Tractor-Scraper Cooling System Coolant (DEAC) - Change
561M Pipelayer Track Rollers - Single Flange and Double Flange
561M Pipelayer Tracks
992G Wheel Loader Electrohydraulic System Piston Pump (Implement, Variable Displacement)
Installation Of Brake Oil Cooler Kit{1365}
992G Wheel Loader Electrohydraulic System Piston Pump (Implement, Fixed Displacement)
651E Wheel Tractor-Scraper Differential and Final Drive Oil - Change
515 Wheel Skidder and 525 Wheel Skidder Conventional Coolant/Antifreeze Cooling System Maintenance
992G Wheel Loader and 854G Wheel Dozer Steering System Relief Valve (Pump Backup)
992G Wheel Loader and 854G Wheel Dozer Steering System Selector and Pressure Control Valve (Steering)
992G Wheel Loader and 854G Wheel Dozer Steering System Steering Cylinder
561M Pipelayer Cooling System Water Temperature Regulator - Clean/Replace