Availability of a 3 inch on 4 Bolt Mounting Flange Brake Assembly

Question

Question:

Looking to replace drum brakes on my boat trailer. 32 ft Tri axle. 3500 axles. Problem is the backing plate spacing is 3x3inch on 4 holes. It.s an old trailer 1987. Do I need to switch axles? Couldnt find that spacing only 4x4 Thanks,

asked by: Tim P

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Expert Reply:

Your easiest solution would be to replace your axles, we don't carry any brake assemblies that will bolt up to a 4 on 3 inch bolt pattern so you would be looking at either replacing the spindles on your trailer which would be kind of a pain, or to just replace the axles all together.

We carry one 3,500 lb axle with brake assemblies and drums already installed on it. For that you would want the # 35545E-ST-89. But you would need to make sure the dimensions of this axle match what you need. This axle has a hub face to hub face dimension of 89 inches and a leaf spring center to center measurement of 74 inches. If this doesn't match what you need you would need to find a local trailer shop to have the axles ordered in.

expert reply by: Jameson C

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Answer 1

Typically trailer wiring is color coded. The brake circuit is usually a blue wire which travels to each brake magnet, where it is attached to one wire from each brake magnet. The other wire from each brake magnet will ground to the trailer frame. I…

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Answer 2

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 3

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 4

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 5

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13…

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Answer 6

You can use leaf springs that are rated higher than the axle without any issues as long as they measure the correct measurement for your trailer. For example the 6-leaf double eye spring for 7,000 lb axles part #e64SR measures 24-7/8" eye…

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Answer 7

Trailer wheel bearings are specific to the spindle that is installed on the axle that is on your trailer. You will need to safely support the trailer, remove the wheel and tire, remove the grease cap, remove the cotter pin and washer that secures…

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Answer 8

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 9

The 5.30-12 tires, being wider, are going to make more contact with the road. This means that the noise, and heat build up will be higher than a 4.80-12 tire but the rolling resistance will actually be less because the tire is larger diameter. The…

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Answer 10

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 11

Load range B trailer tires are going to have a lower capacity than C load range tires. Basically that, psi rating, and the ply rating are the only differences. A higher load range tire would last a little longer than lower load ranges of the same…

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Answer 12

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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Availability of a 3 inch on 4 Bolt Mounting Flange Brake Assembly

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