How Tight Should Trailer Suspension Shackle Bolts Be Tightened

Published 02/10/2015

Products Featured in This Question

Tandem-Axle Trailer Hanger Kit for Double-Eye Springs - 2-1/2" Front/Rear, 4-1/4" Center

(701)

$97.99

4-Leaf Double-Eye Spring for 3,500-lb Trailer Axles - 25-1/4" Long

(2228)

$51.61

Question:

Ive already installed my hangers. I spaced them 30inch from center of the middle hanger and center of front and rear hanger. Still havent finished putting it together brakes and all, so I dont know how it rides yet. It looks good as far as the shackle angles, go. the springs I am using are 3500 lbs and 26inch in length from eye to eye. Is 30inch too much. And should the books be tightened or left somewhat lose so that the springs and equalizers can move? Thank you.

asked by: Sal A

Expert Reply:

We recommend that shackle bolts be tightened fully, then backed off slightly to allow free movement.

For the distance between the center of the axles 30 inches is the recommended distance to use with a 26 inch long leaf spring similar to the # e54SR. Especially if the shackle angles look good.

expert reply by: Jameson C