Thermo King fuel systems are relatively trouble-free and if properly maintained will usually not require major service repairs.

• Drain the water off after the fuel tank and unit have remained idle for an hour.
  • Place a container under the fuel tank to catch the draining water and fuel.
  • Remove the drain plug from the bottom of the fuel tank.
  • Drain till no water is visible.
    • *if water and fuel do not drain freely, the vent may be plugged, requiring cleaning/replacement.
• Change the fuel filter/water separator, inspect/clean the fuel pre-strainer, and clean the inlet strainer on the inlet side of the fuel transfer pump.