Do Trailer Brake Magnets Touch Brake Drums All the Time

Question

Question:

I seen where a expert said that the electric magnet only touch the drum when the brakes are applied. On my 10 inch brakes they touch all the time. After carefully measuring they will touch . They touch with the brakes un plugged. Some trailers mfg say this is normal.

asked by: Doug

1

Helpful Expert Reply:

A trailer brake assembly magnet is going to lightly touch the armature surface of the brake drum even when the brakes aren't applied. They basically glide along the smooth surface until you apply the trailer brakes which magnetizes them and then activates the braking mechanism to slow the trailer.

expert reply by: Jameson C

1

Answer 1

Yes, electric brake assemblies will work in reverse. The brake controller in your tow vehicle would still activate in reverse as long as the brakes are applied. The actuating arm of the Dexter assemblies part #23-27 will apply the brakes when…

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Answer 2

The nut on the spindle should be tightened until snug, with no side-to-side play in the hub and then backed off slightly, about maybe a 1/8 of a turn. If the spindle uses a castle nut and cotter pin or tang nut, tighten the nut finger tight until…

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Answer 3

The torque for the Dexter Trailer Hub and Drum Assembly - 6,000-lb and 7,000-lb Axles - 12" - 5 Spoke Utility #8-174-5UC3 is not specified by the manufacturer. For 9/16 inch studs, the typical lug nut torque will be 120-140 ft lbs based on…

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Answer 4

Due to the age of the trailer, we will want a little more information to make sure we get you the correct hub and drum assembly and brake assemblies. The best way to choose a replacement hub is by using the bearing and grease seal part numbers that…

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Answer 5

The voltage at the black wire running into your controller should be at 12-13 Volts when checked with a multimeter like #PT89ZR. When checked at the 5 o'clock pin on your 7-way with the manual override lever engaged and with the controller…

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Answer 6

Those are Warner trailer brakes. This style is not made anymore and replacement parts are hard to find. We have some parts for the larger Warner assemblies but NOT the 12 x 2 inch ones. Most people end up replacing them. You will have to have…

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Answer 7

Typically the brake magnet of an assembly is held on with clips like the part #BP19-001. If you have the part #23-27 then what you'd need is the #BP19-001.

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Answer 8

The grease seals that will work with your Lippert axle is part #RG06-070. this comes with a quantity of 2 double-lipped seals in the package. If you have everything apart you may want to replace the bearings and races as well. You would need part…

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Answer 9

You will need to have the spring seats removed to have them or new spring seats welded to your axle at the correct locations to match your trailer's hanger spacing. For a 3-inch round axle rated between 5200- and 7200-lbs use part #TRSS300;…

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Answer 10

It sounds like there is an electrical short on your trailer wiring that is activating your left rear brake assembly and that is why the brake continues to drag and get hot. Since you have swapped the brake assembly out and still had the problem you…

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Answer 11

It sounds like you either have bad grounds for the brake assemblies or you are using too small of gauge for the brake assemblies themselves. The brake output circuit should be 10 gauge wire like the part #10-1-1 which is sold by the foot. Make sure…

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Answer 12

You would know to replace brake shoes the same way you would know with a vehicle. If performance is suffering and adjusting the brakes does not help and there are no other issues causing the poor performance it is probably time to change the brake…

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Do Trailer Brake Magnets Touch Brake Drums All the Time

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