Curt Trailer Hitch Installation - 2010 Infiniti QX56

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How to Install the Curt Trailer Hitch on a 2010 Infiniti QX56

Hey everybody, Rob here at Today we're going to be taking a look at the Curt Class III Custom Fit Trailer Hitch Receiver on our 2010 Infiniti QX56.Now here's what our hitch is going to look like once we have it installed. Now the cross tube is going to sit below the bumper, right here in the center, but on the sides it is going to be hidden, so it has a pretty nice clean factory look to it.Now it is going to be a class III hitch, which means it's going to give us that 2" x 2" receiver tube opening and have the widest variety of accessories that we can mount up. Obviously with a trailer hitch we can put a ball mount in there if we want to tow a trailer, but if we need to make some room on the inside we could put a cargo carrier back here, move that gear to the outside or possibly even just take some friends with us, put a bike rack carrier in here and hit the trails.Regardless of how we're going to be using our hitch though all of our accessories are going to mount through the hitch pin hole here on the side. Now the hitch is going to accept a standard 5/8" pin and clip. Now these are not going to come with the hitch but you can find them here at, along with some locking devices to keep your accessories secure and anti-rattle devices to cut down on that rattle, and shake, coming from the receiver tube when we're driving down the road.If you ar going to be towing a trailer obviously you need a spot to hook your safety chains.

We got a plate-style for our connection point welded to the bottom of the receiver tube here. As you can see with most normal sized hooks we'll have plenty of room to get them hooked on or take them off. Even if you have those really large oversized hooks, still have plenty of room to get those engaged. We can take them off without any kind of interference.Now if you're looking for a hitch for your Infiniti you obviously have something in mind that you want to do and you want to make sure that the hitch is going to be up to the task. As far as the weight rating goes our hitch is going to have a 600 pound tongue weight.

That's the maximum downward force at the end of the receiver tube. Now to put that in perspective 600 pounds would be able to carry a good sized bike rack or really be able to maximize the carrying capacity of those large cargo carriers. It's also going to have a 6,000 pound gross trailer weight rating. That's how much our hitch can pull, but that does include the trailer and everything we have loaded on it.Now it is designed to work with weight distribution systems as well. That's going to be a separate component that's mounted on your trailer.

However, the tongue weight is going to bump up to 1,000 pounds and the gross trailer weight rating is going to bump up to 10,000 pounds. But you do want to double-check your QX56 owner's manual because that's the rating for the hitch and we don't want to exceed the manufacturer's rating for our car.I'd like to give you a few measurements and these are going to help you out whenever you're looking for accessories for your new hitch. From the ground to the inside top edge of the receiver tube opening is going to be right about 19-1/2". Now that measurement is going to help you when you're looking for a ball mount, so you can find the appropriate rise or drop to match up to your trailer. From the center of the hitch pin hole to the outermost edge of the bumper is going to be right about 1-1/2", but keep in mind our hitch is going to stick out an additional 1-1/2" past the bumper.

It's not going to be too much to worry about hitting your leg on but just to give you an idea it is going to stick out just a little bit. But those measurements are going to help you find a folding accessory to make sure you have enough room to where you can put them in the upright stored position and they're not going to make contact with the rear bumper.But now that we've seen what our hitch looks like and gone over some of the features let's go through the installation process together.To begin our installation we want to come to the back of our Infiniti. Now yours may have a panel right here in the center. Ours is already missing, but if yours is there you want to pull it down. It's either going to be held in by pushpin fasteners or it could possibly be riveted in. If it is riveted in you're going to have two on each side and then three on the top. The easiest way to take those out is you just take a pair of cutters and if you cut part of the rivet out you should be able to pull the rest of it out, and pull the panel down. But once that's taken care of we'll move underneath and move to one side of the frame rail.We're over on the driver's side here. If we look at the very back towards the bumper we're going to have two threaded holes at the very back on the bottom of the frame. Then if we follow it forward we'll have another threaded hole right here. Now those are going to be our three attachment points on both sides of the frame, but as you can see inside the threads they're kind of dirty and they got some rust in there. I'm going to take some spray lubricant, I'm going to spray it inside. Then I'm going to come back with a nylon tube brush and clean out the well nut inside there. Make sure there's no dirt, debris or rust that will cause any kind of cross threading. I'm going to go through, and clean out each one of the well nuts, and make sure they're nice and clean. Now if they're extremely dirty you may want to run a tap through there. The correct tap size for our bolt holes is going to be an M12x1.25.Once you have all your well nuts cleaned out you want to grab one of your new M12 bolts, and make sure you can easily thread it into the well nut by hand, and it's not going to cross thread. Now I like to go through and check each one of the well nuts, just so I don't have to worry about it once I have the hitch in place. Get a couple turns in there. Go through and check them all.While we're doing this I'll go ahead and go over the combination of hardware we're going to use. We're going to have an M12 bolt to go into each one of or well nuts, but before we put them in place we want to slide a conical tooth washer over it. You want to make sure those teeth are facing up towards the frame. We'll have our hitch here, we'll go through the hole in the hitch and then thread it into the frame to hold it in place. Now it's going to be the same combination for each one of the well nuts on both sides.Now I recommend getting an extra set of hands to help you lift the hitch into place, just because it is rather large, but we're going to want to go lift it up and lineup the holes in the side plates to where they lineup with the frame. Now at this point we really only need to get one piece of hardware in on each side, that way the hitch will hold itself up and then we can work on putting the rest of the bolts in. You just want to make sure you get a couple turns on there so the hitch won't fall.Now I'm going to come back with a 3/4" socket, and an extension, and tighten up all the bolts that I just put in. You want to make sure you come back with a torque wrench and we're going to torque all of our hardware down to the specified amount in the instructions. You want to make sure you go back and repeat that for any remaining hardware.Once you have all your hardware torqued down that'll finish up your installation and look your look at the Curt Class III Custom Fit Trailer Hitch Receiver on our 2010 Infiniti QX56.

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