How To Replace A Trailer FenderStory And Photos By Dan Armitage
Published: Fall 2013
It's easy to do yourself, as long as you have about an hour, and a clever 12-year-old to help!
A dramatic tire blowout at highway speed had literally "blown out" the aluminum fender on the trailer under the boat we'd just purchased. We bought the rig for a good price partially because of the damage, for which the seller had received estimates of up to $200 to repair. I knew it was a doable DIY job and got to it shortly after the boat and trailer found their new home in my yard.
Most major trailer manufacturers offer replacement fenders, and I was able to secure an aluminum, diamond-plate-pattern boat trailer fender from Continental Trailers. Several sources also offer generic replacement fenders for a variety of boat-trailer applications, which can be ordered online or found at local trailer supply stores and at some big-box retailers. When I received the replacement fender from Continental, I was surprised at how light it was, that it wasn't pre-drilled with holes to secure it to the trailer frames, as well as how "bendable" the aluminum fender was without the support of the trailer frame brackets to help stiffen it. With the assistance of my 12-year-old son, we had the old fender off and the new one on within an hour. Here's how we did it:
1. The tools required for the job include wrenches for the nuts and bolts that secure the fender to the frame, a drill with a bit matching the bolts, penetrant to loosen the old hardware, and a spring clamp if you don't have a helping hand to temporarily hold the fender in place.
2. Apply penetrating spray to loosen old nuts and bolts if needed.
3. Using the wrenches, remove the hardware securing the damaged fender to the brackets on the trailer frame. Keep the nuts, bolts, and washers to reuse if they are not damaged. If bolts are hopelessly frozen, you may be able to cut them with a grinding tool.
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