How to Flip Tandem Axle Shackle When Flipped Down

Question

Question:

After the rebuild I loaded my boat and drove 250 miles each way to a lake north of here. When I got back I took boat off trailer and discovered the the rear axle forward shackle straps had flipped downward where it connects to the mid point support and the axle had rotated about 30 degrees clockwise. Why would this happen?

asked by: Steve

1

Helpful Expert Reply:

Most likely you hit a strange bump and it happened to flip your shackle the wrong way. If you use a floor jack to jack up the rear axle it will go back to the right orientation. If it happens repeatedly that would indicate your leaf springs are too short or your equalizer needs to be a bit longer. What springs and equalizers did you use with what measurements?

expert reply by: Jameson C

1

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Answer 1

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 2

The appropriate torque spec for any application will vary depending on the construction of the wheel as well as on the stud size. I suggest checking the wheels you're using to see if their manufacturer has a suggested torque rating. Steel trailer…

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Answer 3

According to our FAQ on slipper springs, linked for referenced, the torque specs are as follows: Torque Ratings 1/2 inch Bolts: 45 ft/lbs - 70 ft/lbs 9/16 inch Bolts: 65 ft/lbs - 95 ft/lbs 5/8 inch Bolts: 100 ft/lbs - 120 ft/lbs The Replacement…

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Answer 4

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 5

It sounds like the eye of the leaf spring is coming in contact with the bottom of the trailer frame. If this is the case then your only three options to fix this would entail either replacing the equalizers, shackle straps, or leaf spring hangers.…

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Answer 6

While we don't have a kit that includes everything for a tandem 5,200 lb trailer we do have all the components separately like the part #K2HR526D for the hubs and rotors. Then for the rest of the components you'd just need the part…

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Answer 7

Generally the issue when shackles flip when hauling empty is that they are too short. So I recommend measuring them from center hole to center hole and assuming they are less than 3 inches, replacing them with longer ones, the 3-1/8" Shackle…

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Answer 8

The torque of U-bolts for 3,500 lb axles such as the 95" long Dexter Trailer Axle Beam #7359765 or 89" long Dexter Trailer Axle Beam #T3584F-EZ-8974 depends on the diameter of the U-bolts. I have cut out a part of our help article on…

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Answer 9

You can use part #FVK8017-00 to replace the bow-tie bracket, motor, and fan blade for your Fan-Tastic Vent 4000-series roof vent.

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Answer 10

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 11

Furrion unfortunately does not sell their connectors separately for some unknown reason and I haven't seen any Y-adapter connectors like you'd see with any other system. When it comes to connecting them together the only way to is in series…

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Answer 12

It sounds like the band inside of your tires has broken. This will cause your radial tires to balloon in the center. Broken belts in tires usually come from defects during the manufacturing process. However, they can occur from improper mounting,…

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