Air system parts

[Bkaufman]

View attachment 921254w
can anyone tell me what this air switch or sensor is for, and if I need it, or where can I find one. Thanks

 

[ZiggyO]

That looks like the pressure cutoff switch for the ctis. If it is, its role is to prevent the ctis from kicking on unless a minimum pressure (I think its 75 psi or thereabouts) is in the air tanks. If not, the only other pressure switches on the system would be for the low air warning, and I think the abs system. Someone please correct me if I am wrong........

Z

 

[ZiggyO]

BTW where in Nebraska are you? I am from the Norfolk area.

Z

 

[Bkaufman]

BTW where in Nebraska are you? I am from the Norfolk area.

Z

Springview

 

[Bkaufman]

BTW where in Nebraska are you? I am from the Norfolk area.

Z

That looks like the pressure cutoff switch for the ctis. If it is, its role is to prevent the ctis from kicking on unless a minimum pressure (I think its 75 psi or thereabouts) is in the air tanks. If not, the only other pressure switches on the system would be for the low air warning, and I think the abs system. Someone please correct me if I am wrong........

Z

thank you I think you may be right, this truck has had the ctis disabled so hopefully I don’t need it then
I had a hired man pull the parts off for another one we have and I’m now trying to get it back to being right.