Most of the time an internal diesel air brake compressor coolant leak is the result of a failed head gasket.
Air compressor leaking antifreeze.
If the system was ever recharged with the stuff you get in the 1 lb.
Piston rings installed up side down.
Clean air filter element and check for other restrictions in the intake system.
Excessive oil in compressor.
The air conditioning ac compressor in your vehicle provides cool air and power for the air conditioning system.
Causes of low refrigerant.
Most air compressors will have an air regulator installed on line from the tank to the discharge coupler.
In some cases the air compressor may have a cracked head or develop a hole in the cylinder wall.
If your refrigerant is low the air conditioner may blow warm or hot air.
A special switch is designed to sense when there isn t enough pressure or when pressure is too high and disengage the ac compressor clutch which operates the compressor to pressurize the system.
Some brands of a c dye have the same green color as coolant.
Air blowing out of regulator.
Compressor air intake restricted.
Drain down to bottom of threads.
Check viscosity and change oil if necessary.
The ac compressor only contains a small amount of fluid which acts a lubricant to keep its parts.
Inside the regulator the part that the air acts on to oppose the regulator spring is a flexible diaphragm.
If air flows both ways a new check valve would be a good investment in compressor repair.