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Saturday, August 6, 2011
Air Brakes Semi
This blog will cover the air brake system.
1. Air Compressor. It pumps air into the air storage tanks (reservoirs). It is connected to the engine through
gears or belt. Air Compressor may be air cooled or by the by the engine cooling system. It may have its own oil supply, or be lubricated by engine oil. If the comressor has its own oil supply,
check it before driving.
2. Air Compressor Govenor. Govenor controls when the air compressor will pump air into the air storage
tanks. When air tank pressure rises to the "cut-out" level (around 125 pounds per square inch.
The govenor stops the compressor from pumping air. When the tank pressure falls to the "cut-in"
pressure (around 100 psi), the govenor allows the compressor to start pumping again.
3. Air Storage Tanks. All storage tanks are used to hold compressed air. The number and size of air tanks varies among . The tanks will hold enough air to allow the brakes to be used several times even if the compressor stops working.
4. Tank Drains. Commpressed air has some water and some oil in it. To drain, each tank has a valve to release built up water in the tank. It is reccomended you drain it every week. To keep contamination, rust out.
More to come.
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