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Full transcript: https://www.etrailer.com/tv-review-redline-replacement-magnet-kit-for-dexter-electric-brake-bp01-301.aspx
Today in our trailer we’ll be installing the replacement kit for for Dexter 12 1/4 inch electric brake assemblies. It is part number BP01-301. This oval-style magnet kit with yellow wire allows you to replace only the worn out magnet on your Dexter trailer brakes, rather than the higher assembly. The overall design increases the efficiency of the magnet, while also extending the life of the magnet. Now we’ll show you how to install it. All right, with our wheel off of our trailer, the first thing we need to do is remove our grease cap here. Make sure we have a drain pan underneath, because this particular trailer uses hub oil versus actually axle grease.
Take our channel locks here and work our cap off. Set the cap aside. Now we bend our cotter pin back, so we can remove it. Just get it started with a pair of dykes. All right, the cotter pin removed, set it aside. I’ll spin our nut off here.
All right, with our nut off we can take off our rust washer here, set it aside, and I’ll put out our outer bearing, too. Set that aside, as well. Now we can pull our hub and drum assembly off. This point, you’re going to get dirty. There’s no avoiding it.
Make sure you’re wearing some clothes that you don’t care about. A little tech tip to make pulling the hub off easier, since the seal will probably be stuck on it: If you take one of your wheels, in this case our trailer has dual wheels on each axle, put it on the hub assembly. With our wheel back on the hub now, I’ll just take two lug nuts here. They go across from each other, and we’ll temporarily tighten them down, and this will give us some leverage to help pull the hub off, just like so. Now we can remove our wheel from the hub. With our wheel set aside, we can now pull our hub straight off. This point, try to cover up the opening a little bit so you don’t dump grease on yourself.
Pull the hub off. De-grease everything with some brake parts cleaner. Making sure we use plenty of it to get all the brake dust out. When removing the hub, I noticed our seal here tore in half, which is fine, we we’re planning on replacing that anyway, so we need to remove our seal from our spindle of our axle here real quick. Just use a pry bar for that. Work our way around so it pops off, like so. We can set aside. Go ahead and pry out the rest of the seal from our hub using the same pry bar. Being careful not to damage the inner bearing. With our seal out, we’ll take out our inner bearing, and we’ll clean off our hub and our drum with some brake parts cleaner and wipe it all down. All right, with our hub and our drum here all cleaned up now, we’ll drop in our inner wheel bearing, like so, and we’ll take our new seal and we will drop it down as well, and we will grab our installer tool to put it in place. All right, our seal installer is not large enough for a seal this size, so we’ll just use a block of wood and a hammer, and we’ll knock it in until it sounds solid. Right now, it’s solid. Perfect. As you can see, when we pulled our hub off our magnet just fell off. It’s because it’s worn down and the clip that retained it had broken off, so it’s not doing it’s job anymore, obviously, so that’s why we’re here replacing it. We’re also going to replace the spring because it comes with the magnet kit, so we can just take that off and discard it, and we’ll cut our wires here from our magnet. Discard that, as well. Pull back these tabs here, a little bit. Pull our wire out. Pull it out, and then we’ll pull it out from the back of our backing plate of our axle. We’ll go ahead and remove the wire completely from the wires going across our axles for our brake signal. We’ll take our new spring here, install it over the arm, and take our magnet, push it onto the arm. Take our new retaining clip, push it on until it clips into place, and now you can see our magnet will adjust, as needed. Now we’ll take our wire, put it back in the clips, may need to pry the clips open a little bit with a screwdriver . Get our wires back behind the arm here. Now we’ll out through the grommet that we pulled them out through the back. All right, with our grommet removed, our wires pulled through, we will push the wires on through the grommet and reinstall the grommet. All right, now that we have our wires pulled through, we’ll strip back our wires about 1/4 inch or so on either end. We’ll take some heat treat bullet connectors here, install them over our wire, and we’ll crimp them into place. Now we’ll install more under wires
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