Fifth Wheel Cylinder Kit Installation

Use the following procedure when installing an air actuated fifth wheel cylinder kit on Fontaine Ultra LT series fifth wheels.

  • Remove the fifth wheel from the mounting bracket. Fontaine advises cleaning the fifth wheel prior to installing the kit.
  • Place the fifth wheel in the upside down position making sure the wheel is placed on a suitable work surface.
  • Remove the pull handle spring from the fifth wheel. (See Figure 1.)
  • Install the exhaust valve into the air cylinder. (See Figure 2.) Make sure the exhaust valve is oriented properly.
  • Install the new air cylinder making sure it is oriented properly. (See Figure 3.)
  • Reinstall the fifth wheel back on the mounting brackets..
  • Insert the air supply line into the quick disconnect on the exhaust valve.
  • Open and close the fifth wheel using the air cylinder to ensure proper function.
  • Tilt the fifth wheel forward to ensure that the cylinder and air supply lien does not interfere with another component.

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