2012 Cascadia owners

Thread starter #1
How often does your air compressor cycle? 2012 cascadia uses air pressure for the def pump. Mine cycles Every 4-6min which I think is too often. Curious to see what others do?
 

Injun

Rabid Squaw
Staff member
Supporter
#2
Have your governor checked. That's too much.
 

mndriver

curmudgeon extraordinare
Supporter
#3
Got an air leak somewhere
 
Thread starter #4
The air drains down as soon as I start driving. I think something to do with the air operated def pump.
 

mndriver

curmudgeon extraordinare
Supporter
#5
You've probably got a bad diaphragm on brake chamber if it starts as soon as you start driving.
 
Thread starter #6
Brake chamber would leak as soon as I released the brakes. My leaks only when moving. I really think that my def pump is using too much air
 

mndriver

curmudgeon extraordinare
Supporter
#7
Moving?

Or just brakes released?
 

Injun

Rabid Squaw
Staff member
Supporter
#8
Well, then, replace the DEF pump.

When that doesn't work, look at the governor and brake system.
 
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