Angle Of Shackles On Trailer Appear Wrong When Installing Leaf Springs

Question

Question:

I am mounting a trailer axle and according to your instructions the position of the shackles on the rear hanger are opposite of what your picture shows, What am I doing wrong? I am using SW-4 B springs 25 1/4 inch c to c Mounting the hangers at 25 3/4inch c to c makes the angle of the shackles to the forward of the trailer your picture shows them angled to the rear of the trailer which I believe is the correct way. ?

asked by: Lynn

0

Expert Reply:

Ff the springs you are installing are 25-1/4 inches, you would need to place the hangers between 24-3/4 and 25 inches apart. The shackle should be angled as the drawing shows in the attached helpful article, which should be toward the rear of the trailer.

Make sure the trailer is not under load when you are installing the hangers and it never hurts to double check the measurements of the springs and the hanger locations as well.

expert reply by: Jeffrey L

0

Skot

1/16/2020

What should the deg of the rear Shackle be when mounted On a single axle trailer

Reply

Jason S.

1/17/2020

The degree of the rear shackle on a single axle trailer isn't something I can give a specific number to. The amount of weight, the measurement between the hangers, the age of the spring as it stretches under use all play into that angle. I've attached an article to help with typical double eye spring suspension like you have.

Helpful Links

faq-Double-Eye-Trailer-Suspension-Review.aspx

Reply

Answer 1

Yes, we sell quite a few trailer tires so we never have any that sit around for an extended period of time. The Westlake ST205/75R14 #274-000012 is the right size and load range you are mentioning and would be a newer stock like you are wanting as…

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Answer 2

I attached a picture that shows the proper position of shackles and equalizers on trailer suspension. Sometimes the shackle will flip up but if you jack up the trailer by the axle that's got the shackle flipped you can usually get it to flip…

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Answer 3

The best ST205/75R14 tire we have on offer will be the Westlake ST205/75R14 Radial Trailer Tire - Load Range D #274-000012. This is rated up to 2,040 pounds at 65 psi and has an L speed rating, or 75 miles per hour. It also has a 5-Year warranty…

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Answer 4

You want leaf spring shackles to be at a slight angle as that prevents the springs from flipping around to the other side of the equalizer over uneven terrain. I attached a picture that shows what the angle is typically like.

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Answer 5

For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind…

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Answer 6

Trailer manufacturers don't usually keep a record of parts like these that they install at the factory, so I cannot be sure as to the exact length of the shackle strap that would have come originally on your trailer. With this in mind, a 3-1/8…

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Answer 7

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

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Answer 8

Not all trailer axles have the EZ lube zerk fitting so what you have is totally normal. You can use a Bearing Buddy like you mentioned but we have found is that the Bearing Buddies make it too easy to add too much grease which then blows out the…

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Answer 9

The 175/80-13 tire that you have now is 24" diameter x 6.9" wide and the new 225/75-15 tire is 28.3" diameter x 8.9" wide. Therefore, the new tire size will be 4.3" larger in overall diameter and 2" larger in overall…

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Answer 10

If the shackles are flipping the wrong direction frequently that typically means the leaf springs are too short, the hanger spacing is too big, or the shackles are too short. Most of the time it's somebody changed leaf springs and just went with…

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Answer 11

It sounds like you have a single axle trailer and are curious about whether or not to put the hanger like the part #28-5 or a shackle in front on the trailer frame. We recommend you put the hanger in the front. The force from the bumps in the road…

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Answer 12

The easiest way to determine the correct replacement parts for your trailer's suspension is by simply measuring its existing components. Looking at one of your current equalizers, you will want to measure from the center of the front hole to the…

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Angle Of Shackles On Trailer Appear Wrong When Installing Leaf Springs

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