Air Brake Compressor Governor

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Air brake compressor governor.

An explanation of how an air governor works in the truck air brake system. This item controls the pressure in the air system. The governor on an air brake system is also a switch but instead of turning the compressor off and on the governor puts the compressor into the load cut in and unload cut out phase. Another way to think of the relationship between the governor and the compressor is that the governor is the bossy wife and the compressor is the lazy husband.

The air brake charging system supplies the compressed air for the braking system as well as other air accessories for the vehicle. Created by the school of motive power technology at fanshawe college and the lo s. How to replace an air governor and cold start of the international dump truck. The governor on the air brake system changes the compressor to load or unload.

The air brake compressor still won t build air pressure with the governor removedif your air brake compressor still won t build air pressure after removing the governor the next step is to disassemble the unloader. Air brake system there will be a gauge for each half of the system. Anywhere in the middle is good in my book. Bendix or284358x high temperature d 2 air compressor governor 105 125 psi reman.

Adjusting the bendix d2 governor just takes a 7 16 wrench and a screwdriver. It deactivates the unloaders once system pressure has dropped to the governor s cut in pressure. The compressor runs continuously while the engine is running so the d 2 governor activates the compressor s unloader mechanism when system pressure reaches the governor s cut out pressure. The unloading pressure for the typical air brake system is 120 psi but it can be higher up to 130 psi without a problem.

In other words the compressor pumps the entire time the engine is running. Or a single gauge with two. If a problem is found replace the damaged pieces and re test with the. This is an easy adjustment as you can see in the video.

Inspect the parts for damage and correct operation. When air tank pressure rises to the cut out level around 125 pounds per square inch or psi the governor. Bossy wife lazy husband.