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

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…

view full answer...

Answer 2

If there is a tiny bit of play in suspension components that are designed to move you would be fine. 1/16 of an inch isn't very much, and as long as you torqued everything down to spec you would be good to go. Ideally we just don't want it…

view full answer...

Answer 3

Hey Aidan, a small amount of play is fine in your leaf springs. If the springs are sagging significantly then that could indicate that your springs are worn or there may be other suspension problems. If you notice any of that, then you are going to…

view full answer...

Answer 4

Hey Dustin, thanks for reaching out! You'll need the MORryde ALLTREK 4000 #MR89DR if you have a 33" wheelbase, or the kit #MR29DR if you have a 35" wheelbase. The wheelbase is measured from the center of the front wheel to the center of…

view full answer...

Answer 5

The common recommendation with oil bath hubs is to not mess with them at all as long as they aren't leaking or the oil isn't milky looking. Some say to change every two years but most will say that as long as everything looks good just leave…

view full answer...

Answer 6

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.

view full answer...

Answer 7

Hello Robert from Norway, and greetings from Wentzville Missouri USA! The 2 bolts for the leaf spring should be tightened but there is no specific torque setting. You don't want them too tight because this could cause the suspension to bind. The…

view full answer...

Answer 8

It sounds like you're looking for the torque specs for the lug nuts on a 6,000 pound axle. For a hub with 1/2 inch studs, 90 to 95 foot-pounds is standard.

view full answer...

Answer 9

Since wire color codes are NOT universal, we always recommend wiring by function, rather than wire color. If you look at the Trailer Wiring FAQ article I have linked you to, you can see some diagrams showing the proper way to wire a vehicle and…

view full answer...

Answer 10

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…

view full answer...

Answer 11

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…

view full answer...

Answer 12

For 1/2 inch trailer u-bolts that attach to axle the recommended torque value is between 45 and 70 ft lbs of torque.

view full answer...

Torque Spec For Leaf Spring Shackle Bolts

Products Featured in This Question

Featured Help Information

Miscellaneous Media

Continue Researching