Replacement Brake Magnet for 1980 Hayes Brakes With Recessed Back Plate and 3 1/2-Inch Center Hole

Question

Question:

need magnets all four wheels

asked by: Bill B

1

Helpful Expert Reply:

We do offer replacement magnets for older Hayes electric brake assemblies but none of these are suitable for brakes produced before the mid-1980s. For reference I have linked four such magnets.

The good news is that we do offer complete brake assemblies that are not much more in cost than replacement magnets alone. The link provided will take you to our main page for electric drum brake assemblies where you can use the filters in the left-hand margin to narrow the results based on the size and capacity you need.

expert reply by: Adam R

1

Answer 1

The replacement magnet, #BP01-225, fits several different brake assemblies. it fits Dexter 10 x 2-1/4 inch assemblies, Dexter 12 x 2 manual assemblies and 12 x 2 Nev-R-Adjust assemblies, 7K axles. For a brake magnet with a red wire we have #BP01-285.…

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Answer 2

Unfortunately, we don't offer any 6 bolt brake assemblies all the brake assemblies we offer for a 10K axle use a 5 or a 7 bolt mounting flange. According to Dexter, they discontinued those brake assemblies about 20 years ago. The good news is…

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Answer 3

To replace your AL-KO 568303 seal you will want the Oil Seal #91030. This seal has the same inner diameter of 2.750 inches and outer diameter of 3.779 inches. It is a confirmed fit for your #99 spindle that uses the AL-KO 568303 seal.

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Answer 4

The #99 trailer spindle is typically found on 9,000 lb and 10,000 lb axles. This is not a spindle that we carry at this time, but I did find some of the measurements. I have attached a diagram showing the dimensions of a #99 spindle for you to check…

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Answer 5

Since you are getting 12 volts at the trailer connector and at each magnet individually it sounds like there is possibly a short between some of the brake magnets or, since you have 6 brake assemblies, maybe you are not using a wire that is thick…

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Answer 6

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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Answer 7

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 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

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

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Answer 10

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

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Answer 11

To determine the size of the hub assembly you need to purchase you have to determine which bearings are in the old assembly. If the old assembly has L44649 inner bearings, you would use the hub you chose #8-258-5UC1. If the inner bearings are marked…

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Answer 12

Hey Richard, thanks for reaching out! The Dexter DX7.5 Drop-N-Go Brake Actuator #099-175-00 is a great option for a replacement actuator because it's a direct replacement for the common Model 60 actuators that were popular in the '90s.…

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