F 250 2WD Pickup V8-7.3L DSL (1990)
Fuel Filler Hose: All Technical Service Bulletins
Fuel System - Difficult or Slow Filling Fuel Tank
Article No.
94-14-11
07/13/94
FUEL SYSTEM - DIFFICULT OR SLOW FILLING FUEL TANKS - F-SERIES CHASSIS CAB VEHICLES
LIGHT TRUCK:
1987-94 F-250, F-350
This TSB is being republished in its entirety to correct a misprint in this article.
ISSUE:
Some trucks may experience a difficult or slow fuel fill rate. This may occur because of misassembled fuel fill pipes or the current fill pipe does not
handle large nozzles and high flow rates available at larger fuel stations and truck stops.
ACTION:
Replace fuel fill pipes. In diesel applications, the external vent hose replaces the internal vent hose and the fill hose is larger. In gasoline applications,
pre-assembled hoses prevent misassembly and the hoses are larger. Refer to the following procedure for service details.
DIESEL APPLICATIONS
1.
Disconnect the fill housing/retainer from the body of the vehicle.
a.
Disconnect the fuel fill hose from the tank.
b.
Lower the tank if there is not enough room between the tank and the vehicle body. Refer to the appropriate Service Manual, Section 10-01,
for service details.
2.
Remove the vapor valve and vapor valve grommet from the tank. Unclip and remove the small hose and cap from the frame.
3.
Install a new grommet (E8UZ-9BO76-A) and install a new fill vent valve in the tank.
NOTE:
THE NEW FILL SYSTEM MAY HAVE TO BE SHORTENED TO FIT THE VEHICLE.
4.
To shorten the hoses, proceed as follows:
a.
Disconnect hoses from the steel pipe assembly and cut to the required length at the outboard end.
b.
Trim both the vent (small) and fill (large) hoses by the same amount. This should allow sufficient length for the vent hose to reach the new
vent valve. The fill hose should be the same length as the old hose, but do not allow excessive length in either the fill or vent hoses that
might form sink traps.
CAUTION:
DO NOT CUT THE INBOARD END OF HOSE BECAUSE IT IS PREMOLDED TO FIT THE TANK.
5.
Install the new housing, with the upper pipe assembly attached, to the body of the vehicle.
a.
Connect the end of the fill hose to the tank and the end of the vent hose to the valve.
b.
Tighten the fill hose clamp to 3.2 N-m +/- .5 N-m (28.3 +/- 4.4 lb.in.) and the vent hose clamp to 3.2 N-m +/- .5 N-m (28.3 +/- 4.4 lb.in.).
CAUTION:
BE SURE PROTECTIVE SLEEVES ARE OVER THE FRAME RAIL.
c.
Install the outboard ends of the hoses to the upper pipe.
