PUMP-FUEL INJ 3285193 - Caterpillar

Nitrogen Inflation Information
Stand behind the tread when inflating a tire.Proper nitrogen inflation equipment and training in its use are necessary to avoid over inflation. A tire blowout or rim failure can result from improper or misused equipment.
Caterpillar recommends using dry nitrogen (N2) gas for both tire inflation and tire pressure adjustments on all current and past production rubber tired machines. Nitrogen is an inert gas and will not support combustion inside the tire.In addition to reducing the risk of an explosion, using nitrogen instead of air to inflate tires lessens the slow oxidation of the rubber and the accompanying gradual tire deterioration. This is especially important for tires that have an expected long service life (four or more years). It also reduces the corrosion of rim components and the resultant disassembly problems.Adjusted Inflation Pressure
A tire inflated in an enclosed shop area at a temperature of 18° to 21°C (65° to 70°F), will be underinflated if the machine works in freezing temperatures. Low tire pressure shortens the life of a tire.When inflating tires in a heated area, make allowances in pressure for cold, outside temperatures. See the Cold Weather Recommendations Operation and Maintenance Guide, Form SEBU5898, for adjusted inflation pressures.Set the tire inflation equipment regulator at no more than 140 kPa (20 psi) over the recommended tire pressure.Use only a Caterpillar 6V4040 Nitrogen Tire Inflation Group, or equivalent, to inflate tires from a nitrogen gas cylinder. See Special Instruction, Form SMHS7867, for tire inflation instructions.Use the same tire pressures for nitrogen inflation as would be used for air inflation. Consult your tire dealer for operating pressures.Tire Pressures
Consult your tire dealer for the operating pressure when the machine is put into operation.
The inflation pressures shown in the chart are cold inflation shipping pressures for tires on Caterpillar machines.Pressures for each application will vary from those shown and should always be obtained from your tire supplier.120G
130G
The "R" in tire size denotes radial construction.