Unhitched at highway speeds? Almost

It seems like all I do here is complain about things that are broken.  But I hope these provide some insight to people on things they need to be checking once in a while.  Like the bolts on their tow vehicle’s receivers…….  This post at least, isn’t about something broken on my Tiffin.

We have a 2015 F150 XLT.  We set it up to tow back in, 2017, I think.  It used to tow our trailer, but when we bought a class C, it became the Towed Vehicle.  We bought a roadmaster tow bar and receiver kit which we installed ourselves.  It was a real pain in the butt because according to the instructions we had to use these “nuts” with a long wire attached.  They had to be fished through a small hole in the frame  to reach the three bolts that hold each receiver onto the frame.  The frame on this vehicle is a box – two u-channels welded together.  Let me say, I like the Roadmaster product and brand.  I’d buy them again.  I’m somewhat responsible as I didn’t check my bolts – but the design was faulty, as proven by the upgraded version.

We followed the instructions to a “T”, including torque specifications.

broken hitch

We had towed, I don’t know how many miles behind the C – maybe 5 or 6,000 miles.  Then we bought the Class A and put another, 15,000 miles or so – towing most of it.  So, the receiver has had a lot of use.  When we pulled into the current campground – this is what I found.  It wasn’t quite dragging on the ground and only a single bolt held it in place.

Needless to say, this didn’t make me happy.  Yes, the instructions say check the bolts every 3000 miles, which we didn’t do.  After all, we worked really hard to get it installed correctly.  Right?  Don’t you trust your own work?

I pulled the bumper off and removed the remainder of the right side and the left as well (which had visibly moved, probably because it ended up being the only side towing the truck).  I immediately order a new set.  When it arrived, I could see they changed the design quite a bit – seemingly to fix the shortcomings of the original version.  First, the instructions now tell you to pull the bumper so the receivers (and nuts) can be installed properly.  The main bolts now have a heavy plate with nuts welded to it to provide a much better and stronger mount.  The old unit used a loose spacer plate between the receiver and frame – which in the new one was welded to the receiver meaning one less surface for things to slide on.

Broken Bolt
Note concentric edges – stretching over time.
"nuts on wires"
“nuts on wires”
Old vs New Nuts
Old vs New Nuts

Those are the good differences.  On the bad side, there are three bolts.  Two go through the bottom of the frame and one goes in the end of a triangular shaped arm that braces the receiver on the side of the frame.  And the new bracket is just over half an inch shorter so I have to drill a new hole in the frame to install these receivers.  Yes, that is a crack in the frame, but only in one layer.  I took the truck to a welding shop to see what the guy thought.  

He said with two layers, it’s a terrible place to try to weld, and since the new bracket would have a support plate on top instead of just the weak nuts, that it would be fine without welding.

Now the instructions also say:

Every 3,000 miles, the owner must inspect the fasteners for proper torque, according to the bolt torque requirements chart on the last page of instructions.  The owner must also inspect all mounting points for cracks or other signs of fatigue every 3,000 miles.

But they also say to put Threadlock Red on the bolts.  If you put Red on the bolts, you won’t be able to tighten the bolts if you do discover they have gotten loose.  I believe I’ll be putting Blue on when I reassemble it all.  Also, the upper bolt still has one of those lame nuts on it.  If it ever comes loose, the nut will just spin, requiring the bumper to come off in order to tighten it.  Roadmaster could have fixed that as well with another bracket with a nut welded to it.

Bent receiver
Bent receiver
Last bolt holding Receiver did this.
Last bolt holding Receiver did this.
Shorter bracket
Shorter bracket means new hole.

So, reminder – you should once in a while, check your tow receiver and your hitch bolts (some class A hitches have had issues) and make sure everything is tight.