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Step 5 – Install Spring Arms
The e2 trunnion arms are NOT side specific. Simply place the bottom knuckle of the arm in
the bottom socket of the hitch head. (Figure 16)
While holding the keeper tab up, roll the other knuckle in the top
socket in the hitch head.
Release the keeper tab and repeat for the other side. (Figure 17)
To remove the arms, lift the keeper tab and roll the top knuckle out
and then remove the arm.
Step 6 – Set Up Weight Distribution
Tools Needed:
• Measuring tape
• Pencil
Good weight distribution is a critical component of the e2 trunnion
hitch setup. To ensure proper weight distribution, measure the
front fender of the tow vehicle three times in different vehicle
configurations.
1. Measure without the trailer coupled.
2. Measure with the trailer coupled with the spring arms unattached.
3. Measure with the trailer coupled and the spring arms attached.
For best accuracy, measure both the driver and passenger fenders and use the average of these
two measurements for the calculations. (Figure 18)
Figure 18
Grease here
Figure 16
Figure 17
Measure from
the ground to
fender through
the center-line of
the axle.
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