Here's a excerpt from page 4-3 of the 2004 Adventurer operators manual:
Installation of a proper trailer brake system is recommended. Check state regulations on trailer weight and trailer brake requirements to be sure you select the right equipment before towing.
NOTE: If you tow a car or trailer that weighs over 1,000 lbs., it must be equipped with automatically activated brakes. See the Towing Guidelines for Winnebago Industries Motor Homes included in your InfoCase for maximum towing capacity and GCWR for your chassis.
Here's a link to the online manual:
https://winnebagoind.com/resources/m...Adventurer.pdf
Both Workhorse and Ford say the brakes on the motorhome are rated for the GVWR of the chassis, not the GCWR. Winnebago also states that the maximum drop hitch should be 6". I questioned this at length when we purchased our 2013 Adventurer. That virtually puts all their class A motorhomes out of the towing arena.
After nearly a half hour phone conversation with a rep he told me that the reasoning was that in the past Winnebago had been sued when someone had been involved in an accident. Apparently they were towing a heavy trailer with a long drop hitch and no brakes. In a panic stop the trailer folded the hitch under the coach. Since that time they recommend trailer brakes and a drop hitch no longer than 6".
At the time your coach was built Winnebago was purchasing hitches from major manufacturers. Since the 2013 model year they have been building their own. I was told the in house manufactured hitches are 50% stronger than those they were purchasing.
Also in the time period your coach was built Winnebago was adding extensions to the rear of the frame to accommodate the longer houses. The frame extensions were not as large as the original frame and consequently limited the weight the motorhomes can tow. Later in about the 2008/2010 time period they decided to accommodate larger houses by adding a section of frame to lengthen the wheelbase. These sections are the same size as the original frame sections and can better handle the weight and strain of towing.
It's up to you to decide whether or not to tow a 3,000 lb. trailer with an 8" drop hitch and no brakes. Just be aware that both the motorhome and chassis manufacturers do not rate their products for doing so.