2015 Cat d6t ac drain hoses plugged any idea how to get them to drain as i have water running in the cab bad thanks in advance
Blow compressed or back up the vent, may have to repeat as the debris is still in there.
Find the bottom end of the main drain hose and have a good look at the check valve #35 (circled). They often plug up.
Be a good idea to replace(not clean) all the filters in the cab and outside