Fuel Tank Sending Unit; Fuel Tank Filler Neck - Jeep 1979 CJ-5 Technical & Service Manual

FUEL SYSTEMS 1J-3
Fig. 1 J - 3 Fuel Tank and Vent Lines—CJ-5 and C J - 7 Models
Installation—Cherokee and Wagoneer Models
(1) Place tank on jack. Connect fuel gauge sending
unit wire, fuel outlet line and return line.
(2) Raise tank into place. Install attaching parts.
(3) Connect four lines at rear of tank
(4) Install skid plate, if removed.
(5) Connect parking brake cable.
Removal—Truck Models
(1) Remove skid plate, if equipped.
(2) Disconnect fuel inlet hose, inlet vent hose and
vapor vent hoses at forward left corner.
(3) Place jack under tank.
(4) Loosen straps and lower tank.
(5) Disconnect fuel gauge sending unit wire, fuel
outlet line and fuel return line.
(6) Remove tank.
Installation—Truck Models
(1) Install replacement clamps on vent lines and
fuel outlet and return lines.
(2) Position tank on jack.
(3) Connect outlet and return lines and sending unit
wire.
(4) Raise tank and install straps.
(5) Connect four hoses at left front corner of tank.
(6) Install skid plate, if removed.
Fuel T i l l S u i n g Unit
This assembly utilizes a float pivoted to a variable
resistance element.
On CJ and Truck models, fuel pickup and fuel return
system nipples and the sending wire connection are
mounted on the sending unit mounting cover which is
secured to the fuel tank with a locking ring. On Cherokee
and Wagoneer models, the fuel pickup and return nip-
ples are mounted on a separate cover.
To replace the fuel sending unit, remove the fuel tank.
Fuel Tank Filler Neck
The fuel filler neck on all models has been designed to
provide for vapor control during fill-up and improved fill
rate.
The filler neck of all models incorporates a restrictor
to prevent entry of nozzles used on leaded fuel gasoline