Procedures
TOOLS REQUIRED^ J 43290 Fuel Siphoning Hose
If fuel pump is inoperative, the tank can be drained by siphoning from the tank. A suitable means is through the fuel filler pipe with the "correct" type and stiffness of tubing as used with the Fuel Siphoning Hose J 43290.
CAUTION:
^ DO NOT ALLOW SMOKING OR THE USE OF OPEN FLAMES IN THE AREA WHERE WORK ON THE FUEL SYSTEM IS TAKING PLACE.
^ ANY TIME THE FUEL SYSTEM IS BEING WORKED ON, DISCONNECT THE NEGATIVE BATTERY CABLE, EXCEPT FOR THOSE TESTS WHERE BATTERY VOLTAGE IS REQUIRED.
1. Disconnect negative battery cable.
2. Open fuel filler door and remove gas cap.
NOTE: DO NOT ATTEMPT TO INSERT ANY OTHER TYPE OF SIPHON HOSE OR TUBE INTO FUEL FILLER PIPE. THE DESIGN OF THE INLET CHECK VALVE RESTRICTS INSERTION OF A HOSE AND, MOST IMPORTANTLY, PREVENTS REMOVAL OF THIS HOSE. IF THE SIPHON HOSE BECOMES STUCK IN CHECK VALVE, FUEL FILLER PIPE WILL NOT BE ABLE TO BE REMOVED FROM FUEL TANK WITHOUT DAMAGE TO FILL PIPE OR FUEL TANK.
3. Insert siphon hose guide/funnel into fuel filler pipe.
IMPORTANT: The siphon hose will reach the bottom of tank within about 10 inches of end fitting (and tag). When connecting siphon hose to another length of hose connected to fuel drain tanker: DO NOT insert siphon hose into fill pipe funnel past the tag at fitting end. If inserted too far, upper portion of siphon hose may pass through check valve cage and then jam on attempted removal.
4. Insert siphon hose (J 43290) into guide funnel and into fuel filler pipe. Some resistance may be encountered when the tip of the siphon hose reaches the inlet check valve. Repeated probing may be necessary to slide the hose tip through the check valve cage.
CAUTION: WHENEVER FUEL LINES ARE REMOVED, CATCH FUEL IN AN APPROVED CONTAINER. CONTAINER OPENING MUST BE A MINIMUM OF 300 MM (12 IN.) DIAMETER TO ADEQUATELY CATCH THE FLUID.
IMPORTANT: The fuel flow rate from the siphon hose will range from 0.3 gal/min up to 1.0 gal/min (depending on whether it is gravity siphoned or with an air-powered pump).
5. Begin the fuel siphoning process. Place fuel into an approved fuel container.
6. Remove siphon hose from fuel filler pipe after draining is complete.