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326 STARTING AND OPERATING
Without Weight-Distributing Hitch
(Incorrect)
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 distribution 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]).
6. Perform a visual inspection of the trailer
and weight distributing hitch to confirm
manufacturers’ recommendations have
been met.
NOTE:
For all towing conditions, we recommend towing
with TOW/HAUL mode engaged.
Measurement
Example
Example 2500/
3500 Height (mm)
H1 1030
H2 1058
H2-H1 28
(H2-H1)/2 14
(H2-H1)/2 + H1 1044
20_DJD2_OM_EN_USC_t.book Page 326
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