RAM 2500 2020 Owner's Manual page 329

WARNING!
An improperly adjusted weight distributing

hitch system may reduce handling, stability
and braking performance and could result
in a collision.
Weight distributing systems may not be

compatible with surge brake couplers.
Consult with your hitch and trailer manufac-
turer or a reputable Recreational Vehicle
dealer for additional information.
With Weight-Distributing Hitch (Correct)
Without Weight-Distributing Hitch (Incorrect)
Improper Adjustment Of Weight-Distributing
Hitch (Incorrect)
STARTING AND OPERATING
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 distribution bars connected.
4. Measure the height of the top of the front
wheel opening on the fender to ground, this
is height H2.
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