Tire Valves

Introduction:

The tire valve allows air to flow into the tire, and it is also used to release air from the tire. The core in the center of the valve is spring loaded and allows air to flow inward while the tire is inflated.

 

Valve core:

• Once the tire is inflated, the valve core seats and prevents air flow out of the tire.

• The small pin on the outer end of the valve core may be pushed to unseat the valve core and release air from the tire.

• An airtight cap on the outer end of the valve keeps dirt out of the valve, and provides an extra seal against air leakage.

• A deep groove is cut around the inner end of the tire valve. When the valve assembly is pulled into the wheel opening, this groove seals the valve in the opening.

 

Tire Chains

• Tire chains may be used in emergency situations such as driving on snow-covered or ice-covered mountain roads. Most tire manufacturers do not recommend the use of tire chains.

• Use only SAE class “S” tire chains unless specified by the vehicle and tire manufacturer.

• Chain types include class S, type P, and type RP.

• These chains must be the proper size and must be installed tightly with the ends secured.

• Always follow the chain manufacturer’s recommended installation procedure. While using chains, driving speed should be reduced.

• If the chains are heard striking the vehicle body, stop immediately and tighten the chains to prevent body damage.