5. Install and adjust the tension in the weightdistributing bars so that the height of thefront fender is approximately (H2-H1)/2+H1(about 1/2 the difference between H2 and H1above normal ride height [H1]).MeasurementExampleExample 2500/3500Height (mm)H1 1030H2 1058H2-H1 28(H2-H1)/2 14(H-H1)/2 + H1 1044NOTE:For all towing conditions, we recommendtowing with tow haul mode engaged.Fifth-Wheel HitchThe fifth-wheel hitch is a special high platformwith a coupling that mounts over the rear axle ofthe tow vehicle in the truck bed. It connects avehicle and fifth-wheel trailer with a couplingking pin.Gooseneck HitchThe gooseneck hitch employs a pivoted cou-pling arm which attaches to a ball mounted inthe bed of a pickup truck. The coupling armconnects to the hitch mounted over the rearaxle in the truck bed.Trailer Hitch Type and MaximumTrailer WeightThe following chart provides the maximumtrailer weight a given factory equipped trailerhitch type can tow and should be used to assistyou in selecting the correct trailer hitch for yourintended towing condition.Trailer Hitch Type and Maximum TrailerWeightHitch Type Max. Trailer HitchMax. Trailer WeightClass III BumperHitch - 1500Model5,000 lbs (2 268 kg)Class IV - 1500Model11,000 lbs (4 989 kg)Trailer Hitch Type and Maximum TrailerWeightClass V - 2500/3500 Models18,000 lbs (8 164 kg)Fifth Wheel -2500/3500Models25,000 lbs (11 339 kg)Gooseneck -2500 Model 20,000 lbs (9 071 kg)Gooseneck -3500 Model30,000 lbs (13 636 kg)Refer to the “Trailer Towing Weights (Maxi-mum Trailer Weight Ratings)” for the Maxi-mum Gross Trailer Weight (GTW) towablefor your given drivetrain.All trailer hitches should be professionally in-stalled on your vehicle.364