206 AND 212 WHEEL-TYPE EXCAVATOR Tire Inflation Information Caterpillar

Tire Inflation Information
1.1. Recommendations
2.1. Tire Pressures


Dry nitrogen (N2) gas is used as original factory fill and is recommended for inflation of tires. If the tires were originally inflated with air, nitrogen is still preferred for adjusting the pressure. Nitrogen mixes properly with air.

Nitrogen inflated tires reduce the potential of a tire explosion, because nitrogen does not support combustion. Also, nitrogen helps prevent oxidation and the resulting deterioration of rubber and corrosion of rim components.

Typical Example

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

Use a self-attaching inflation chuck and stand behind the tire tread while inflating the tire to prevent personal injury if tire or wheel components come loose.


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 pressure shortens the life of a tire.

If the machine is operated in freezing temperatures, consult the "Cold Weather Recommendations Operation and Maintenance Guide," AVSpare Form SEBU5898, for adjusted inflation pressures.

Tire Pressures

The inflation pressures shown in the chart below are cold inflation operating and shipping pressures for tires on AVSpare machines.

The inflation pressure is based on the weight of a ready-to-work machine without attachments, at rated payload, and in average operating conditions. Pressures for each application may need to be varied from those shown and should always be obtained from your tire supplier.