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MC-7 5F30 A/C compressor unloader valves Mark O. 9-1-03  
I am trying to get the factory A/C working properly again in my MC-7.

I got a new rebuilt compressor, now all I need is another unloader valve.

Does anyone have any extra unloader valves?

Thanks in advance.

Mark O.
Re: MC-7 5F30 A/C compressor unloader valves Mark O. 9-19-03  
The unloader valves is what activates the compressor. Most modern compressors use some sort of electric clutch to activate the compressor.

On the 5F30, the compressor is always turning when the engine is turning. When the A/C switch is activated, it signals the unloader valve to close the bypass and start the compressor compressing. As the need is increased, the other unloader valves activate and eventually all three cylinders of the compressor are compressing.

since the need for cooling is constantly changing and the MCI system is a blended system, the thermostat will signal the unloader valves to activate or not activate in order to keep the temp constant inside the bus.

At least that is what is supposed to happen in theory.

I am not that familiar with the Eagle A/C system. It may or may not have unloader valves. It if it does, they will be mounted on the back side of the compressor and will have electric wires on one side and oil lines going into the compressor on the other.

Thanks for your help.

Mark O.
Re: MC-7 5F30 A/C compressor unloader valves Ron 9-15-03  
Hi Mark, what is an unloaded valve? I have stripped the AC from my Eagle 10 and have some of the parts laying arround. I have a manual and it has pictures and stuff.......Ron........
Re: MC-7 5F30 A/C compressor unloader valves sayleni lopez 9-9-09  
Necesito el manual del compresor 5f20 es q esta fallando y necesito desarmarlo
Re: MC-7 5F30 A/C compressor unloader valves new li 2-7-08  
Picture of MC-7 5F30 A/C compressor unloader
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