Torque Spec For Leaf Spring Shackle Bolts

Question

Question:

What is the Torque Requirement for 9/16inch shackle bolts

asked by: Tim

0

Expert Reply:

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 lock nut, like part # 166081. If the bolt you are using has knurls at the bolt head, tighten the bolt down until the knurls go through the shackle link or hanger and the bolt head is flush. Then back off the nut slightly so that all of the components are pulled together but not so tight they cannot move.

expert reply by: Mike L

0

Answer 1

According to the installation instructions from Dexter Axle the torque specs for the wet bolts on their Dexter E-Z Flex Suspension Kits, like part #K71-653-00, is 30 - 50 ft-lbs. I have attached a clip from their instructions for you to check out.

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Answer 2

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…

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Answer 3

Yes, the DeeMaxx Disc Brake Kit #DE66YR will allow you to use 14" trailer wheels.

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Answer 4

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 5

The torque requirements for leaf spring u-bolts depend on the diameter of the u-bolts that are being used. If the gross weight of your tandem axle trailer is 7,000 lbs, then you likely have two 3,500 lb axles. Typically 1/2 inch diameter u-bolts are…

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Answer 6

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 7

For 9/16 inch suspension bolts, wet bolts or regular bolts, you will want to torque them to 65 to 95 foot pounds. And should you ever use 1/2 inch bolts then the torque spec is 45 to 70 foot pounds. And for 5/8 inch use 100 to 120 foot pounds.

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Answer 8

In order to replace your boat trailer surge coupler you will need to match a number of your trailer's characteristics. You need to select a coupler for the type of hydraulic brakes you have, either disc or drum. Couplers for each type vary in…

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Answer 9

Removing the check valve from the master cylinder for hydraulic drum brakes, like part #T1777401, enables it to put out a greater psi rating so that it will be compatible with hydraulic disc brakes that require the higher psi rating. If you are…

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Answer 10

Brake calipers are typically installed so they point toward the back of the trailer, but it is okay to install them pointing up or toward the front of the trailer. The important thing to consider when installing the calipers is to make sure at least…

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Answer 11

The DA91 Demco surge brake actuator that you are looking for is part #DM8750311. This has a 2-5/16" coupler, comes with an electric lockout, is designed for disc brakes, and has a weight capacity of 8,000 lbs towing and 800 lbs tongue weight.

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Answer 12

Yes, the Hydrastar Vented Electric Over Hydraulic Actuator, #HS381-8067, will work with the factory brake controller on your 2011 Ford F-350. The earlier Ford brake controllers had trouble with these types of system, but Ford changed the brake…

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