Forum Discussion

xanth's avatar
xanth
Explorer
Mar 31, 2019

Keystone Cougar - Installing 2nd AC - Roof cut

Have a 2016 Keystone Cougar that was wired for the 2nd AC. Last weekend, removed the vent and put up a 2nd AC, an Dometic Penguin II. Fairly easy to do, but getting the old sealant off was a pai...
4x4van's avatar
4x4van
Explorer III
Apr 17, 2019
If the roof material is bunching up, then it sounds to me like you are overtightening the A/C. Don't overtighten the A/C unit, just a turn or two past snug is all you want.

About DIY Maintenance

RV projects you can tackle on your own with a few friendly pointers.4,395 PostsLatest Activity: Oct 12, 2025