Single axle double I shackle installation

Updated 09/16/2020 | Published 09/12/2020

Products Featured in This Question

6-Leaf Double-Eye Spring for 4,500-lb Trailer Axles - 26" Long

(2234)

$69.84

Shackle Bolt with Locknut for Double-Eye Springs - 3" Long

(948)

$10.36

Question:

Im having a difficult time pressing the 9/16-in bolt completely through the shackle. it leaves like a 1/32nd inch gap that Im concerned wit. I put a lot of torque on it although Im not using a gauge. I started wondering, because the shackles are stamped on one side, if theyre not tapered in some way but I dont see that. Im also thinking an impact gun might be good for this?

asked by: Jon E

Expert Reply:

The shackle straps do not have a taper and should not be over tightened to the spring or hanger because they are designed to move and pivot. Some bolts like # 166081 will have a spline near the head to hold that shackle tightly on one end and you can use a hammer with a block or a rubber mallet to make sure that is seated correctly without damaging the head of the bolt. The bolt does have a slight taper at that spline for that reason and the shackle strap will allow you to drive that spline in for a tight fit then will still allow pivoting and movement on the opposite side. Splines need to be driven in instead of turned.

expert reply by: Jason S