Correction for Weak Trailer Brakes After Repacking

Question

Question:

Recently repacked wheel bearings. I can hear magnets hum, wheels stop spinning when of the ground but don’t stop trailer drive vehicle in idle and drive. Before repacking, controller set at 7 stopped trailer and vehicle easily at idle. What happened?

asked by: Tom

0

Expert Reply:

When pulling the hubs off of a trailer and repacking the bearings you will inevitably unseat your brake shoes. Using the Brake Adjustment Spoon for Drum Brakes part # W80630 will allow you to make a slight adjustment to the brakes to tighten them up a little bit at a time until you see the desired result.

Another cause could ba a weak ground but that is unlikely the issue.

expert reply by: Randy B

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Answer 1

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 2

You can check the condition of your hub's races by carefully removing all bearing grease with a rag to expose the actual surface of the races. When they are completely free of grease, etc., inspect them for any signs of scoring (very slight…

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Answer 3

Yes, the Dexter Nev-R-Adjust brakes will work with your 3,500 lb AL-KO axles. Brake assemblies attach to the brake mounting flange that is welded to the axle or spindle. The brake mounting flange on the 3,500 lb AL-KO axles uses a standard 4-bolt…

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Answer 4

We have the part #BP01-110 which is the correct replacement magnet kit for AL KO 3,500 lb brake assemblies like you have.

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Answer 5

Yes, we offer a whole range of replacement parts for electric drum brakes including magnets. I have included two links you can click on to see all drum brake parts and just the various types of magnets we offer. Click on your brake drum size, such as…

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Answer 6

The Replacement Trailer Brake Magnet for 12" Brake Assemblies #BP01-180 will fit old Hayes AL-KO brake Assemblies that are 12x2 inches. They fit 6K and 7K assemblies after 1988. For the 7.2K and 8K oval you would want the Trailer Brake Magnet…

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Answer 7

We don't have a way to check to see if you have a metal framework in the roof of your 2013 Rockwood HW276 to determine if the #SR1020 could attach to it but it can install through the roof either way. I'd rather recommend you the Swagman part…

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Answer 8

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 9

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 10

If the surface on the inside of the drum where the shoe pads make contact isn't smooth then a brake shop may be able to turn the drums. If that surface or the surface where the magnet makes contact (called the armature surface) is discolored then…

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Answer 11

For the 2019 Ram ProMaster 3500 there is not a direct wiring harness. If you want to use the P3 #90195 then you will need to use the kit #ETBC7 to hardwire it. If you don't have the factory tow package, you will also need the T-One Vehicle Wiring…

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Answer 12

There are a couple of things that caught my eye in your question. First, you mentioned taking the trailer to have the bearings packed. It is possible that in the process, they may have got some grease on the shoes or another component of the brakes…

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