Just had my 2015 Lariat Scab in to a local shop for a rough country leveling kit and also had a Flowmaster American thunder put on with an AFE CAI (flowmaster is a little louder than expected)

The shop called me and said they were hesitant to put the leveling kit on because of something to do with the Four Wheel drive being pressure controlled and if the leveling kit is on the four wheel drive might not be able to engage or would be very close to not engaging... Just wondering if anyone else has run into this? Sorry, I don't remember the technical term he used for this 4WD mechanism.

 

Interesting. Obviously there's a ton of people who have had leveling kits installed and have not had problems, and companies who have developed them with no issues.

However, there must be some reason (even a mistaken one) that he thinks there might be a problem. Any more info on his reasoning?

 

I think it had something to do with this part of Rough Country's instructions. I found it odd because I'm sure there is a ton of people that this kit has worked for.

Using a hand vacuum pump, apply and hold 24inHG of vacuum to the actuator through the large port. See Photos

26. Install the (3) bolts securing the actuator to the knuckle and tighten using an 8mm wrench. See Photo 20.

27. With vacuum still applied to actuator. Measure the depth of the CV shaft treads protruding
through the hub bearing. If minimum 15.5mm or .61” is not achieved, rotate the hub to eliminate binding of the
splines

 

Ah sure enough, interesting. I wonder if that is specific to the 2.5" leveling?

 

This is the exact issue on another thread!


https://www.f150forum.com/f118/level...oblems-309597/