How to Know When Trailer Brake Magnets are Worn Out and Need Replacing

Question

Question:

Hi, I have a 2004 Wells Cargo sled trailer and I need to know how can I tell or know if the electric brake magnet is wore out? The Drum is marked 8-247 Dexter so I am assuming that it is a 10inch x 21/4 drum with 5 lugs. The pads fell off of the brake shoes. Thanks,

asked by: Rod P

0

Expert Reply:

Are there any visible signs of wear on the magnets like exposed windings then that would indicate they need replacing.

Magnets can go bad without showing visible signs of wear though. To see how to troubleshoot them check out the help article I attached.

For replacement magnets for the Dexter 10 by 2-1/4 inch assemblies you would want the part # BP01-110.

As bad as your assemblies sound you might just want to replace both assemblies. For the left hand side you would want the part # AKEBRK-35L-SA and for the right hand side part # AKEBRK-35R-SA.

expert reply by: Jameson C

0

Frank

5/5/2020

Hi there I replaced my axel on my trailer but the perch wasn’t welded on the axel so it would spin but it did it a couple times and now my magnets look worn and my truck is saying to service trailer brake system.do I need to replace the magnets if they look worn ?

Reply

Chris R.

5/7/2020

If they're pretty visibly worn I think it would be a good idea to go ahead and replace the magnets. It's likely what is causing the trailer brake error in the truck because it's not sensing a good connection.

Helpful Links

dept-pg-accessories_and_parts-pc-brake_magnets.aspx

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Answer 1

If the brake magnet is worn to the point that the windings are visible then you know it's time to replace the magnet. However, magnets can also fail without the visible signs of wear. Check out the FAQ article I attached on testing brake…

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Answer 2

On Dexter 12" Nev-R-Adjust Electric Brake Assembly #23-458 the shoe pad thickness is 3/16 of an inch. Dexter says that you should replace the shoes if the material gets down to 1/16 of an inch thick or less.

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Answer 3

Many times Dexter hubs will fit on a Lippert axle, but Lippert does have a few axles out there with special spindle sizes. Every Lippert axle comes with a tag or plate on the axle that gives a serial number or NV number. If you can give me that…

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Answer 4

The magnet should only make contact with the inside of the brake drum when power is applied to the magnet. If it is making contact with the drum all the time, you may have residual power running on the brake wire that is just enough to cause the…

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Answer 5

One wheel locking up on your trailers brakes could be for a few reason. Most likely it's due to a brake assembly that is out of adjustment. You want to adjust the assemblies so there is only a light drag on them when they are turned by…

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Answer 6

Since the trailer was off of the ground it would not take much voltage to stop the wheels from spinning so they may be getting power but they may not be getting enough power due to a short or wiring issue. But 9 times out of 10 weak trailer brakes…

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Answer 7

For the SAE AP2 99 DOT lens we know that the part #A2RB is the correct replacement.

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Answer 8

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 9

That number is probably 4 mm which that amount is acceptable. Normally trailer brake thicknesses are done by inch though. 3/16 of an inch is what they are new and then they should get replaced at 1/16 of an inch.

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Answer 10

MORryde has a version of the X-Factor Crossmember that was designed to work with the CRE3000 you have with the part #MR33WR.

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Answer 11

The MORryde X-Factor Crossmember for Standard Frame Hangers #MR33WR includes new wet bolts for the hangers on your 2022 Keystone Montana High Country 351BH 5th wheel camper. So you will not loose the ability to grease your hanger bolts.

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Answer 12

There are a number of reasons why the brakes on your trailer may not be working. Lets start with the easiest things to check. First, check the vehicle and trailer connectors for corrosion. This can cause a short inside the connector and the brake…

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How to Know When Trailer Brake Magnets are Worn Out and Need Replacing

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