NHTSA Complaint #11532882 — 2021 WINNEBAGO REVEL

My engine’s cooling fan blade and clutch assembly became unscrewed from its belt-driven shaft. Once unscrewed, the assembly was suspended at its hub by 2 cables to the engine, one mechanical and one electrical. The suspended and swinging assembly then damaged the fan’s threaded shaft mount and the vehicle’s radiator. In other reported cases*, damage has also occurred to the radiator shroud, drive belts or other critical engine parts. Thankfully, in my case the failure occurred near my home on a quiet neighborhood street at low speed. Once I located the problem, I was able to temporarily suspend and anchor the fan and clutch assembly to the radiator shroud and drive the van home. Had the failure occurred on a busy highway at speed, much more damage could easily have occurred and potentially have led to a serious accident. * There are many cases of this occurring on Winnebago Revels which are built using a VS30 Mercedes Sprinter with a 2nd alternator. The issue affects the vans of several recent build years. See the ongoing discussion at this link: https://www.winnebagorevelforum.com/forum/revel-tech/problem-solving-owners-helping-each-other/other-revel-problems/5964-cooling-fan-self-destruct