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212 STARTING AND OPERATING
Without Weight-Distributing Hitch (Incorrect)
Improper Adjustment Of Weight-Distributing Hitch
(I
ncorrect)
RECOMMENDED DISTRIBUTION HITCH
ADJUSTMENT
Towing With 2500/3500 Air Suspension
1. Position the truck to be ready to connect to
t
he trailer (do not connect the trailer).
NOTE:
Normal Ride Height (NRH) or Alternate Trailer
Hei
ght (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 from the top of the front
wheel opening on the fender to ground, this is
height H1.
Measuring Height (H)
3. Attach the trailer to the vehicle without the
w
eight distribution bars connected.
4. Measure the height from 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
d
istributing 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
manufacturer’s recommendations have been
met.
NOTE:
For all towing conditions, we recommend towing
wi
th 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
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