How Tight Should Leaf Spring Shackle and Spring Eye Bolts Be

Question

Question:

I backed the shackle bolts off a quarter turn from tight. What about the front bolt? Tight or a quarter off from tight?

asked by: Dwight S

0

Expert Reply:

If the bolts for the shackle link and the leaf spring eye are too tight, the suspension won't articulate as it should. You want to run the bolt down tight, then back it off by a 1/4 turn, as you'd mentioned.

expert reply by: Mike L

0

Answer 1

There is no specific torque rating for shackle bolts. Basically for the middle bolt there should be enough free play in the shackles to allow them to move. Tightening the shackle bolts too much will squeeze the shackle straps against the leaf springs…

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Answer 2

There should be enough free play in the shackles to allow them to move. There is no specific torque rating for shackle bolts. The first thing you should make sure of is that the bolts you use are long enough so that when installed you will have at…

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Answer 3

Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are…

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Answer 4

Thanks for reaching out! It sounds like you have an unusual setup because to my knowledge all 100 lb motorhome propane tanks use the POL port like what came on the MB Sturgis Sturgi-Stay T-Fitting w/ Hoses #103539-MBS you got from us. With that being…

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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 and…

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Answer 6

I never recommend using grease with Nylon Bushings #TRBU11566. The grease can trap dirt which will cause the nylon to become damaged easier. And the chemicals in different greases can cause the nylon bushings to break down. If you want to use Grease…

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Answer 7

As long as the weight capacity is inline with your trailer/axle rating and the measurements match your current springs, the number of leaves in a spring pack does not matter. The difference between a 3 and 4 leaf spring pack within the same weight…

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Answer 8

When using the 4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles part #e27SR with the Single-Axle Trailer Hanger Kit for Double-Eye Springs part #APS4 you will need to space the leaf spring hangers 25-3/4" apart.

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Answer 9

Spring Hanger location dimensions are normally figured by the manufacturer and provided with the spring hanger kit, that includes all of the parts for installing the springs on the trailer frame. I have provided a chart that shows the spring hanger…

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Answer 10

The two sizes you mentioned are pretty similar and fit many of the same 15 inch wheels. The 205/75-15 fits rim widths of 5 inch to 6-1/2 inch whereas the 225/75-15 fits widths that are 5 inch to 6 inch. The 205 is 27.1 inches tall and the 225 is 28.4…

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Answer 11

Shackle bolts have a nut that needs to get held with a wrench or socket while tightening them down. If you didn't use a wrench or socket when you initially installed the shackle bolts you could go back now with one so that you can tighten them…

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Answer 12

The Dexter Single Axle Heavy Duty Suspension Kit #K71-403-00 technically will not have a torque specification. However, I have been asked this before and was informed by Dexter that what you need to do is tighten them down to the point of either…

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How Tight Should Leaf Spring Shackle and Spring Eye Bolts Be

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