Originally Posted by VTX1800N1
I should add, you may be tempted to blow any water out of the system using compressed air. It's OK to do this so long as you first disconnect both check valves and the vacuum reservoir (obviously pull the hoses off at the IWEs also). If you don't disconnect them, air pressure will destroy them. Instead of a compressor, I'd use that canned air you can get to clean dust out of computers. Just tape the straw into the vacuum lines.
Awesome thread and thank you. I have a 2013 Raptor and I believe it has a front LSD. I would like to test my IWE too. If I lift one wheel in 2wd with engine off and try to spin the wheel, would I expect the wheel and half shaft to not spin? Assuming the iwe are engaged to the hub.
I asking this question because I had grinding up front due to a vacuum line damage. I repaired the vacuum line and the next day could not crawl up a steep hill in 4 low. My buddy said my fronts were not pulling. I do not cycle the TCM often so I am wondering if I have a combination of issues. While engine is on half shafts do not spin in 2wd. While engine is on half shafts do spin in 4wd.
Even though I heard grinding, dealer said iwe is not damaged but they replaced the hub due to a damaged oring.
I leave for a camping trip in Death Valley at the end of November and I need to determine if my front wheels will function in 4wd under load.