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STARTING AND OPERATING 415
Improper Adjustment Of Weight-Distributing Hitch
(Incorrect)
Recommended Distribution Hitch Adjustment
Towing With 2500/3500 Air Suspension
1. Position the truck to be ready to connect to the trailer (do
not connect the trailer).
NOTE:
Normal Ride Height (NRH) or Alternate Trailer Height
(ATH) can be used. The vehicle must remain in the engine
running position while attaching a trailer for proper leveling
of the air suspension system. It may not be possible to enter
Alternate Trailer Height (ATH) while lightly loaded.
2. Measure the height of the top of the front wheel opening
on the fender to ground, this is height H1.
3. Attach the trailer to the vehicle without the weight distri-
bution bars connected.
4. Measure the height of the top of the front wheel opening
on the fender to ground, this is height H2.
5. Install and adjust the tension in the weight distributing
bars per the manufacturers’ recommendations so that the
height of the front fender is approximately (H2-H1)/
2+H1 (about 1/2 the difference between H2 and H1 above
normal ride height [H1]).
5
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