How to Determine the Correct Replacement Brake Magnets for Trailer Brakes

Question

Question:

does magnet have a part #.how do you know which magnet to get

asked by: Sam

0

Expert Reply:

To determine the correct magnet you will need, you need to go by the manufacturer and size of the brakes on the trailer. Sometimes, the year of the brakes is needed as well. The brakes may have information stamped into the metal on the back side (in board side) of the backing plate.

Magnet # BP01-301 fits the following:

Dexter 12-1/4 x 3-3/8 Stamped Backing Plate
Dexter 12-1/4 x 3-3/8 Cast Backing Plate
Dexter 12-1/4 x 4 Stamped Backing Plate
Dexter 12-1/4 x 4 Cast Backing Plate

I have included a link to the brake magnets we carry.

expert reply by: Michael H

0

Answer 1

Yes, for a 10k rated Dexter brake assembly magnet you would want the part #BP01-301.

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Answer 2

The magnets you have been using with the yellow wires should be the correct units for your Dexter 12-1/4 x 4 inch shoes. When replacing them I recommend sticking with the same assemblies. The Replacement Magnet Kit (with yellow wires) #BP01-301…

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Answer 3

Since you have an older trailer, the brakes could have possibly been switched from electric to hydraulic or the other way around. Even on newer campers, unless it is just purchased from the manufacturer, it would be just a guessing game for someone…

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Answer 4

To determine the size of the brake assemblies you need you have to measure the depth and width of the hub drum on the axle like what you see in the picture I attached. The most common size is 2-1/4 inch wide like the #T4071600-500 that you…

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Answer 5

Your trailer might be possessed! If the trailer has a battery on it with a breakaway system then that is likely where the power was coming from. Even if there wasn't a breakaway system, if there is a battery on the trailer then it is…

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Answer 6

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

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Answer 7

Maximum amperage draw for 4 Brakes that are 10 or 12 inch diameter is 15.0 to 16.3 amps at 12 to 13 volts. The 14 gauge wire may be sufficient but for maximum braking effectiveness at full load capacity. I would opt to run 10 gauge wire. Larger…

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Answer 8

I have included a link to a help article that explains how you can test trailer brake magnets. Basically you will need a multimeter such as #PT89ZR, a car battery, and the magnets. When testing I recommend testing one magnet at a time. On a 12-1/4…

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Answer 9

As long as one of the wires coming from the back of the hub is a ground and the other is a power, it does not matter which wire on the magnet goes to which wire from the back of the hub. I have included a link to a video of a magnetic brake…

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Answer 10

The Dexter Electric Trailer Brake Assembly, #23-438 (left side) #23-439 (right side) when first installed require manual adjustment. Simply use a small screwdriver or similar tool to turn the adjustment wheel to push out the shoes. You will keep…

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Answer 11

If one brake magnet goes out the other 3 on your trailer will still be working, you will just not have the one braking assembly working and it will need to be replaced. As long as the pads on the assembly are in good shape you can just replace the…

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Answer 12

The type of brake assembly shown in your photos were commonly used on mobile home axles and older travel trailers. We do not carry this style of brakes for this style of trailer. However, if you could provide a little more information I would be…

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How to Determine the Correct Replacement Brake Magnets for Trailer Brakes

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