Recommended Replacement Slipper Spring Leaf Springs

Question

Question:

I am changing leave springs on my boat trailer on side is closed one is open I measured from bolt to bolt center while leave spring is on trailer to rusty might fall apart if I take off to measure because of so much rust but it measured 23 inches from center to center installed what size do I need I think it’s a 3 or 4 leave

asked by: Jonathan

0

Expert Reply:

Thanks for the photo. Your leaf springs have definitely seen better days and it is time to replace a little while ago. Since you said one side is open and one closed, I assume you have slipper springs. The measurement on the springs is from the center of the eye to the end of the spring in the description. For the measurement you gave from bolt center to bolt center, we have two options:

3-Leaf Slipper Spring w/ Radius End for 1,500-lb Trailer Axles - 24-5/8" Long # SP-178275, and
4-Leaf Slipper Spring w/ Radius End for 2,000-lb Trailer Axles - 24-5/8" Long # SP-179275

expert reply by: Jason S

0

click to enlarge

Answer 1

In order to determine the torque rating for the lug nuts on your trailer you will need to know check out the chart I attached that shows all of the torque specs for all the trailer lugs available based on stud size, wheel material and wheel size.

view full answer...

Answer 2

Thank you for providing the specs for the suspension components that you already have. Correct hanger spacing really depends on the components being used such as springs, hangers and equalizers. Most of the hanger spacing dimensions that we have are…

view full answer...

Answer 3

Assuming your tires are in good shape without any bulges the easiest way to determine if you have a bent spindle is to take a straight edge that is longer than the tire and lay it across the tire parallel with your trailer frame and then measure the…

view full answer...

Answer 4

As long as the weight capacity is inline with your trailer/axle rating and the measurements match your current springs, the number of leaves in a spring pack does not matter. The difference between a 3 and 4 leaf spring pack within the same weight…

view full answer...

Answer 5

To find the load capacity for your axle you should look on the trailer VIN plate or sticker that lists the VIN number. The weight rating of the axle should be listed on that same plate or sticker. Also, the axle could have a tag or plate on it that…

view full answer...

Answer 6

For a single axle trailer, you want the shackle strap to be able to move so that you have the spring deflection needed for your suspension. Angled like the photo or even almost vertical is fine you just don't want the shackle strap to bind and…

view full answer...

Answer 7

The difference between an load range C and load range D tire in the same size is the capacity and psi rating. The two tires will still have the same dimensions and fit on the same wheel. The D rated tire has a higher capacity. For a ST175/80D13 like…

view full answer...

Answer 8

A BT8 spindle would have a diameter of .99 of an inch where the bearings would both install and would have a diameter of 1.24 where the great seal would ride. That would require a hub part #AKIHUB-440-2-1K for an idler hub. A BTR spindle would have…

view full answer...

Answer 9

Well shackle length is mainly based on the height difference between the front and rear hangers. The rear hanger normally doesn't hang as low as the front so that the shackle can offset the difference and add the ability to move. What is the…

view full answer...

Answer 10

Leaf springs typically have the part #stamped on the strap that holds the leafs together at one end of the shorter leafs, or it is painted on the concave side of the springs. The part number can then be used to determine the capacity of the springs.…

view full answer...

Answer 11

Even though I cannot comment specifically on the grease you used because I am not familiar with it, I can tell you the best grease for trailer bearings is a a grease with a rating of GC-LB, which just means it is made to withstand very high…

view full answer...

Answer 12

Hello again, James. We will need to consider a different approach here because the Timbren Silent Ride Suspension like part #TSR3500S05 cannot be used with torsion axles. In order to use the Silent Ride you would need to completely replace both…

view full answer...

Recommended Replacement Slipper Spring Leaf Springs

Products Referenced in This Question

Product Page this Question was Asked From

Featured Help Information

Miscellaneous Media

Continue Researching