Originally Posted by LaTravel59
I have a question. I am relatively new to all this. My dealer set my weight distribution hitch when I bought the trailer. They said it would not need to be re-set. But, the trailer was empty. Does it need to be re-set now that it's loaded?
When loaded and hooked up with the spring bars of the WD hitch tight, the floor of the trailer should be level front to rear. (I check mine with a 4' carpenter's level.) If it's not level, then adjust the ball mount up or down on the adjustable shank until you have a level trailer.Then you need three trips across the scales to check on the hitch adjustment.
1] Weigh the wet and loaded tow vehicle (TV) with the shank and head for the WD hitch, but without the trailer tied on. Weigh on a CAT (certified automated truck) scale so you get both front and rear axle weights as well as gross weight of the TV.
2] Weigh the wet and loaded TV with the wet and loaded trailer tied on, but without the spring bars.
3] Weigh the wet and loaded TV with the wet and loaded trailer tied on, and with the spring bars tightened up to where you think they should be when loaded.
Determine hitch weight: Subtract the weight of the TV without the trailer from the combined weight of the rig without the spring bars attached. That gives you hitch weight. Another way to obtain hitch weight is to use a Sherline tongue weight scale. That's how I do it:
Sherline Trailer Tongue Weight Scale - 2,000-lb Capacity Sherline Tools 5780
Determine distribution of hitch weight. Compare the three weights with the spring bars attached to the three weights without the spring bars. With the spring bars attached and tight, you should see 15% to 25% of the hitch weight distributed to the trailer axles, another 15% to 25% of the hitch weight distributed to the front axle of the TV. And 50% to 70% of the hitch weight remaining on the rear axle.
Ideal would be 25% to the trailer axles, 25% to the front axle and 50% remaining on the rear axle of the TV.
Depending on the WD hitch design, you can probably change the weight distribution percentages by changing the angle of the hitch ball to the hitch head.