RAM Commercial CHASSIS CAB 3500 2021 Owner's Manual page 205

Recommended Distribution Hitch Adjustment
1. Position the truck to be ready to connect to
the trailer (do not connect the trailer).
2. Measure the height of 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
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.
Measurement Example 2500/
Example 3500 Height (mm)
H1
H2
H2-H1
(H2-H1)/2
(H2-H1)/2 + H1
NOTE:
For all towing conditions, we recommend towing
with TOW/HAUL mode engaged.
Fifth-Wheel Hitch
The fifth-wheel hitch is a special high platform
with a coupling that mounts over the rear axle of
the tow vehicle in the truck bed. It connects a
vehicle and fifth-wheel trailer with a coupling
king pin.
Your truck may be equipped with a fifth wheel
hitch option. Refer to the separately provided
fifth wheel hitch safety, care, assembly, and
operating instructions.
Gooseneck Hitch
The gooseneck hitch employs a pivoted
coupling arm which attaches to a ball mounted
1,030
in the bed of a pickup truck. The coupling arm
1,058 connects to the hitch mounted over the rear
axle in the truck bed.
28
14
1,044
STARTING AND OPERATING 203
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