405-0104 Rev. I
Page 6 of 12
9/26/12
Installation
1. Park the towing vehicle and trailer in a straight line on firm, level ground. Air-ride shock
absorbers, air springs, or automatic leveling systems on towing vehicle should be disabled or
deflated to the manufacture’s minimum recommended pressure prior to SwayPro™ installation.
2. Insert the hitch mount receiver shank into the towing vehicle receiver and secure with 5/8” x 3”
pin and clip.
3. Couple the trailer to the hitch head by placing the trailer coupler onto the hitch ball per the
manufacturer’s instructions.
4. Measure 29” back from the center of the ball coupler and mark this point on the trailer tongue
frame work. Mark on both sides. Center and mount the rotating latches to the trailer frame
over the marked areas. Remove or relocate any obstructions on the trailer tongue framework if
necessary. Finger tighten the bolts on the rotating latch at this time.
IMPORTANT:
The spring bar chain must be straight up and down in the center of the rotating
latch when the towed vehicle and trailer are aligned. Reposition the rotating latch along the trailer
frame if necessary.
5. Insert the spring bars assembly into the hitch head pivots until the manual release pins snap
closed and lock the bars in place.
6. After verifying that the rotating latches are in the proper position, torque the 1/2”-13 square head
set screws against the trailer tongue framework to 40 ft. lbs. and tighten the jam nut.
7. Install the appropriate ball (not provided) to match the coupler onto the hitch head per ball
manufacturer’s instructions. Use the 1.031 ID spacer tube for 1” ball shank. The hitch ball
capacity must meet or exceed the gross trailer weight rating.
8. Release the rotating latch bracket by rotating the lock pin. Rotate the bracket using the
wrench that was provided and turn clockwise until the chain slot is on the bottom. Insert the
chain with desired chain link in the slot of the tightener. Using the wrench, rotate the bracket
counterclockwise until the latch pin engages in the latch hole. The suggested starting point is to
have four (4) chain links showing. Do the same on the other side.
IMPORTANT:
Caution must be used due to the potential of injury if the energy of the spring bar
is suddenly released. The wrench will rotate quickly. Hold firmly as the rotating latch bracket will
rotate downward causing a quick jerk on the wrench. Rotate slowly and firmly.
9. Determine if the angle is correct by the levelness of the towing vehicle. If necessary, adjust the
chains links.
A. Support the weight of the trailer tongue
B. Unlock the rotating latch bracket and release the spring bar tension on the chains
C. Adjust chain to tighten or loosen one (1) link at a time
D. Reapply the spring bar tension on the chains by using the wrench to rotate the rotating
latches in a clockwise direction until the latch pin engages in the latch pin hole
E. Lower the front of the trailer allowing the tongue weight of the trailer to be supported by the
towing vehicle
