Replacement Magnets for Dexter 12-1/4 Inch x 4 Inch Electric Brake Assemblies

Question

Question:

for years now i have been using the dexter magnet with the yellow wires on 12.25 x 4 shoes K71-376-00 i seen a post on your site about a guy askingfor magnets for 3-3/8 shoes and you said to use this same magnet so am i using the wrong magnet on the 4inch shoes ? i am pretty sure you can get them with the black wires that have more magnetism ?

asked by: Dave

0

Expert Reply:

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 that you referenced are designed to work with Dexter electric brake assemblies that have either the 12-1/4 inch x 3-3/8 inch or 12-1/4 inch x 4 inch dimensions, which is why you also saw them recommended for 3-3/8 inch assemblies.

Going with a with a higher rated magnet won't necessary result in better performance. It will likely just make the brake assemblies more difficult to adjust because they will be extremely sensitive.

I have attached a couple short video demonstrations that you can also check out.

expert reply by: Chris R

0

Answer 1

I'm not sure why they said those were your only options, but we do have the correct replacement oil seal for your Dexter 10k hub from 2006, and is the exact replacement for a National 370150BG: - Unitized Oil Seal #10-51 The #10-51 has an inner…

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Answer 2

I spoke to Dexter and they said there is a bit of a process for installing the spindle nut properly. 1. You will need to thread on the inner nut, rotate the hub, then tighten the nut to 100 foot pounds. 2. Loosen the nut to remove the torque, making…

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Answer 3

Yes, 14 gauge wire seems too small. I would go with 10 or 12 gauge. For 10 gauge you can use #10-1-1 and for 12 gauge use #12-1-1. These wires are sold in increments of 1 foot. So if you needed 20 feet of wire you would enter 20 in the quantity box.…

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Answer 4

On each individual electric brake magnet the amperage draw would be 3.0 to 3.2 max amps at 12 to 13 volts on 7-inch brake magnets and 3.2 to 4.0 max amps at 12 to 13 volts on 10 and 12-inch brake magnets. The max amperage draw for the brake magnets…

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Answer 5

You could technically use a junction box like part #3375601101 for a 4-Way connection, like part #HM38134, but since junction boxes are designed for 7-Way connections you'll need to find a way to plug up the larger hole since you're only…

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Answer 6

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 7

Here is your options for a Dexter D1012 with the Inner Bearing #387A, Inner Race #382A, Outer Bearing #25580, and Outer Race #25520. Idler Hub Prior July 2009 #8-288-3UC1 Idler Hub After April 2013 #008-430-03 Hub/Drum Prior July 2009 #K08-288-90…

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Answer 8

I have attached a photo of the inside of a hub you can check out. In the photo the arrow indicates how the seal is installed on the hub. As you can see the flat side of the seal is flush with the edge on the inside of the hub.

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Answer 9

From what I could find out, the Big Tex 22GN tandem axle trailers use 10,000 pound axles. However, this is the brand new ones so I highly recommend double checking this with Big Tex if you are unsure. They will need the VIN for your trailer, so have…

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Answer 10

I can give you a few different options but to know the exact bearings, races, and seals you need for an oil bath on your 10K Dexter Axle you will need to take some measurements on your spindle using a digital caliper or by finding the part numbers on…

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Answer 11

Thank you for the pictures and information of your axle! I called Dexter and your Dexter P12 SLR axle with Serial Number D-423-4057 has a 9000lb axle rating, and uses an 8 on 6-1/2 hub and drum assembly with 5/8" studs like you mentioned. For…

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Answer 12

The only difference between the: -Dexter Trailer Idler Hub Assembly for 9,000-lb to 10,000-lb Axles #8-288-3UC1, & the, -Dexter Axle Oil Hub for 9,000-lb - 10,000-lb General Duty Axles #008-430-03, is that #008-430-03 is the new style, and is…

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Replacement Magnets for Dexter 12-1/4 Inch x 4 Inch Electric Brake Assemblies

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