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

I have attached for you below some common torque values needed for a trailer suspension system but a lot of these will vary by bolt size and other factors. U-Bolts: Varies by Size - 1/2" bolts: 45 ft/lbs - 70 ft/lbs, 9/16" bolts: 65 ft/lbs…

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Answer 2

You will need the U-Bolt Kit item #APUBR-1 to use the 4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 27" Long item #SP-210275. The kit uses 1/2 inch diameter nuts that you will want to torque them down to about 70 foot pounds.

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Answer 3

I have attached a chart for you to take a look at that includes the lug nut torque specifications. If your wheel uses 1/2 inch lug nuts or wheel bolts like the 12 Inch Steel Spoke Trailer Wheel #AM20124 referenced in your question, you will torque…

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Answer 4

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 5

There is no specific torque rating for shackle bolts. You'll want to ensure that the bolts you use are long enough so that when installed you will have at least 2 threads protruding from the nut. Make sure that the bolt you're using has a…

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Answer 6

There is no specific torque setting for the axle nut with the #AKIHUB-440-2-G-EZ-1K. Check out the installation video below starting at the 13 minute mark. The hub is overtightened at first to make sure everything is seated. Then he backs off the…

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Answer 7

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 8

The Karrier ST205/75R14 #AM32156 is rated for 1,925 lbs at 60 psi while the Karrier ST215/75R14 #AM32182 is rated for 1,870 lbs at 50 psi. These are ratings that Kenda, the manufacturer, decided would be the best for these specific tires after their…

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Answer 9

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 10

The instructions for the Road Armor Shock Absorbing Equalizer Kit like part #LC696740 calls for a specific torque rating when installing the wet bolts and nuts (see linked instructions for specifics). If you aren't able to torque the nuts and…

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Answer 11

Yes, the 25-1/8" leaf springs #e54SR you ordered will work for you. What happens to leaf springs over time is that they generally elongate a bit (flatten out) so to choose replacement double-eye leaf springs you do want to take that into…

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Answer 12

Hey Mario, the correct brake assembly set you need for the 4,400 lb axles on your trailer is the part #LC46WD and #LC96WD. Then for a hub/drum you'd want the part #8-407-5UC3-EZ and you'd be set. The hub includes all the needed bearings and…

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How Tight Should Leaf Spring Shackle and Spring Eye Bolts Be

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