Pull Test - Lippert Components Curt Rota-Flex Pin Box Owner's Manual

NOTE: During the hitching maneuver, the bottom of the trailer's pin box should come into contact with
the hitch skid plate ramp.
4. Open the jaw on the 5th wheel head. Refer to the manufacturer's instructions for proper 5th wheel
hitch latch operation.
5. Back the tow vehicle slowly toward the trailer until the tow vehicle's hitch contacts the bottom of the
pin box and the kingpin slides into the receiver.
6. Latch 5th wheel hitch in closed position per the instructions of the 5th wheel hitch manufacturer.
7. With the trailer wheels still chocked, make sure:
A. The landing gear is resting on firm, level ground.
B. The landing gear fully supports the trailer's weight.
C. The tow vehicle is stationary and in park with the emergency brake on.
D. The bottom of the pin box is resting on top of the hitch.
E. There is no space between the mating surfaces.
8. If space exists between the pin box and hitch, the trailer has not been properly hitched. Do not tow the
trailer. Instead, repeat the hitching steps 1-7 until the trailer is properly hitched.
9. Connect any electrical cables between the tow vehicle and trailer.
10. Do not tow the trailer until a Pull Test has been conducted. Go to the Pull Test section in the manual.

Pull Test

Review hitch manufacturer recommendations for Pull Test prior to proceeding and adjust accordingly.
Failure to perform a pull test may result in severe property damage, serious personal injury or
death. Failure to secure tow vehicle and trailer from movement during procedure could result in
severe property damage, serious personal injury or death. Make sure tow vehicle and trailer are
1. Make sure the trailer wheels are chocked, the trailer landing gear is resting on firm ground to support
the trailer and the tow vehicle is in park with the emergency brake engaged. Double check tailgate
is lowered.
2. Return to the cab of the tow vehicle, release the emergency brake and then apply the trailer brakes.
3. Slowly pull the trailer forward with the tow vehicle.
A. If the tow vehicle is properly hitched, the wheel chocks and trailer brakes should keep the truck
from moving forward.
B. If the trailer is not properly hitched, the trailer will separate from the hitch and the truck will move
forward while leaving the trailer behind. If this happens, repeat the Hitching Procedure.
4. After successfully performing the Pull Test, fully raise the landing gear per manufacturer's
recommendations.
5. Raise the tailgate of the truck.
6. Check and inspect all electrical circuits for proper operation, including clearance lights, turn signals
and stop lights.
7. Remove and store all trailer wheel chocks.
Rev: 08.09.23
properly secured against movement during the procedure.
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