Is There a 12 Inch Brake Drum for a Dexter #84 Spindle Available?

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Question:

Is their a 5 or 6 lug drum that will work on a #84 spindle, inner bearing L68149 with 12 inch electric brakes? This appears to be a Dexter moble home axle. This is on a triple axle boat trailer. Electric brake baker plate is welded to axle.

asked by: Larry P

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Expert Reply:

The #84 spindle from Dexter will limit the diameter of the brake drum to 10 inches, so this will not work with a 12 inch diameter brake, unfortunately. 12 inch brakes are generally fitted to 5,200 to 7,000 pound axles, which will typically have a much larger inner bearing. These will also use the 8 on 6 1/2 bolt pattern for the wheels.

The only way to keep a 5 or 6 lug drum on your current axles will be to cut off your current brakes and either weld or bolt on a 10 inch brake, like the Dexter Nev-R-Adjust Electric Trailer Brake Kit # 23-468-469. If the mounting bracket for the brakes are not salvageable, you may need to weld on the Brake Mounting Flange # 4-35 to complete the install. It should be noted that this is designed to fit a 2 3/8 inch diameter round axle. You will then need either the Dexter # 84546UC3-EZ for a 5 on 4 1/2 bolt pattern, or the Dexter # 84546UC3-EZ for a 6 on 5 1/2 bolt pattern.

If you prefer to stay with the higher capacity 12 inch brakes, I suggest replacing the axles. The Dexter # 8327834-EB will include electric brakes, drums, and all bearings, seals, and caps needed. However, this will measure 95 inches from hub face to hub face and 80 inches from the center of one spring seat to the center of the other one. The included drums will also use an 8 on 6 1/2 bolt pattern, so you would need to replace your current wheels with something like the Kenda Karrier ST235/85R16 Radial Trailer Tire with 16" White Wheel - 8 on 6-1/2 - Load Range E # AM32739.

expert reply by: Lazer S

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Dexter Number 84 Spindle
(click to enlarge)

Answer 1

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 2

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 3

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 4

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 5

According to Blue Ox, it'll take an experienced installer about 4 to 5 hours to complete the installation of their #BX1128 Base Plate Kit on a 2016 Jeep Grand Cherokee. The install isn't what I'd call super-difficult, but the installation…

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Answer 6

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 7

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 8

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 9

The Dexter Nev-R-Adjust electric trailer brakes can be manually adjusted. There are a couple teeth of the adjustment wheel that are exposed just under the lever that you referenced. I have attached a photo showing the teeth. You will likely need a…

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Answer 10

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 11

Hey Bryan, that's a good question. The pricing can definitely be misleading, but I wouldn't use it to judge the quality of the tire. A lot of that comes down to promotions, inventory, and whether you're looking at a tire by itself or…

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Answer 12

The Demco Hydraulic Trailer Brake Actuator part #DM72VR should be a direct replacement for the Atwood 61101 Brake Actuator that you have now. This newest updated it rated at 7K instead of 6K. This is a bolt on option that mounts on 3" centers.…

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Is There a 12 Inch Brake Drum for a Dexter #84 Spindle Available?

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