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Replacing the Axle on a Gooseneck Horse Trailer

Question:

To start I was having the back of he trailer drag while towing. So when talking to you guys it was recommended that I do a over/under axle swap. So I completed it yesterday. It was the 2 3/8” axle plus leaf springs I should have gotten approx 5” of lift. Which in theory would work. I guess I should have been more descriptive but I have what looks like a 3-4” axle so I went from dragging with minimal clearance to approx 11-12” of clearance which is not suitable for loading and unload horses. If I went with a straight axle would that help? My current axles have a slight bend could I flip the axle without hurting anything? Trying to describe everything the best I can. The bend is closer to the trailer floor, so could I pot the bend down closer to the ground?

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Expert Reply:

An axle flip kit like part # K71-384-00 will raise the trailer the diameter of the axle plus the height of the leaf spring pack. I do have options for you but rotating the axle to where the bend faces the other direction is not one of them. The bend in the axle will actually straighten out once a load is placed on the trailer and if this was reversed, the axle would lose capacity.

Now from this point forward you have two options both of which entail replacing the axle. Since your current axle has trailing arms that position the spindle above the centerline of the axle, a true straight axle would then bring the trailer down a few inches. In order to recommend the correct replacement I would need to know the following.

1) What is the capacity of the axle?

2) What is the distance between the two hub faces?

3) What is the distance between the two spring seats on center?

4) What are the inner and outer bearing numbers?

5) What is the bolt pattern of your wheels?

For example, the Dexter Trailer Axle part # T3584F-EZ-8974 is a 3,500 lb axle that has a hub face measurement of 89" and a spring seat measurement of 74". It uses a L68149 inner and L44649 bearing in addition to working with wheels that have a 5 on 4-1/2" bolt pattern.

The other option you have would be to switch to an axle-less system like the Timbren Axle-Less Trailer Suspension System part # ASR3500S05 for standard height or part # ASR35HDS02 for 4" lift. This system actually replaces the leaf springs and axle on your trailer. They are very universal and easy to install. The progressive-rate rubber springs absorb road shock and will keep your horses safe.

I have attached a review video on each system for you as well.

expert reply by:
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Conner L

Question:

Ok so I have removed the axles once again. I measured the hub facing and it is 87” and the spring seat center is 70” I’m currently having trouble finding the correct measurements. One of the axles is an idler and the other has the electric brakes.

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Expert Reply:

Thanks for the info! Just to confirm, the hub center measurement will need to be taken from the base of one wheel stud to the base of the wheel stud on the opposite side and the spring center measurement will need to be taken from the center of the spring seat on one side of the axle to the center of the seat on the other. Based on this, I recommend using the Dexter Trailer Axle Beam with E-Z Lube Spindles part # 8327816 for 5,200 lb or part # 8327826 for 6,000 lb. These axles have a 86-1/2" hub face to hub face and a 71-1/2" spring center to spring center measurement. The 5,200 lb axle uses a 25580 inner and a LM67048 outer bearing whereas the 6,000 lb axle uses a 25580 inner and a 15123 outer bearing. They both have E-Z lube spindles for easy maintenance.

Then in order to add brakes or idler hubs you are going to use the following.

With Brakes:

5,200 lb- part # AKEBRK-7-SA + part # 8-201-5UC3-EZ
6,000 lb- part # AKEBRK-7-SA + part # 8-201-9UC3-EZ

Without Brakes:

5,200 lb- part # 8-213-5UC1-EZ
6,000 lb- part # AKIHUB-655-6-EZ-K

expert reply by:
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Conner L

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