Ingersoll-Rand Thermo King SGCM 4000, Maintenance Manual, Page: 137 / 181

Engine Maintenance
136
Draining Water from Fuel Tank
Water run through the system may damage the fuel injection system components. Damage to the fuel
injection system will subsequently cause more expensive damage to the engine. A large accumulation of
water in the bottom of the fuel tank will stop a diesel engine. Water should be drained off during
scheduled maintenance inspections to prevent breakdowns. Drain the water off after the fuel tank and unit
have remained idle for an hour.
1. Place a container under the fuel tank to catch the draining water and fuel.
2. Remove the drain plug from the bottom of the fuel tank.
NOTE: Some fuel tanks have a check valve in the drain plug fitting. Push the check valve open with a
small screw driver to drain the tank.
3. Let the water and fuel drain into the container until no water is visible in the fuel draining from the
tank. If the water and fuel do not drain freely, the vent may be plugged. If so, clean or replace the vent.
4. Install the drain plug.
Fuel Filter/Water Separator
The fuel filter/water separator filters the fuel, and removes water from the fuel and returns it to the fuel
tank.
Fuel Filter/Water Separator Replacement
Replace the fuel filter/water separator at intervals according to the Maintenance Inspection Schedule.
1. Unscrew the filter bowl 1/4 turn and remove it and the filter element. Drain the fuel from the filter
bowl and dispose of the filter element properly.
2. Clean the filter bowl and the filter head.
3. Lubricate the top inside edge of the filter bowl with oil.
4. Lubricate the O-ring in the top of the filter element with oil.