Replacing Leaf Spring PR4 with Spring Rated for 6k Axles

Question:

I have a stock 40foot fifth wheel triple axle WW. the axles are alko 6k with a GVRW about 19k. The factory springs are four leaf but the springs seem a little light for a 6k axle. spring pr4 I believe, I have previously broken three springs all in different locations on the trailer. However all the breaks have occured about 3inch from an eyelet. Can I upgrade to a pr5 instead? Regards

asked by: Thomas J

Expert Reply:

The PR4 was a 3500 lb axle leaf spring which is our current part number # e68SR. Since you axles are 6k you would need to step up to a higher rated spring like with the part # e78SR which is same length but for 6k axles.

expert reply by: Jameson C