Fuel Filters; Fuel Tank Replacement - Jeep 1979 CJ-5 Technical & Service Manual

1J-2 FUEL SYSTEMS
AIR CLEANER
CAP
8 0 2 7 3
Fig. 1J-1 Carburetor Air Cleaner—Typical
OPTIONAL PAPER
P O L Y U R E T H A N E C A R T R I D G E
Fig. 1J-2 optional Pelyurettae Air Ctaaner Element
FUEL FILTERS
All carburetors are protected against the entry of dirt
and other foreign matter through the fuel inlet by a
replaceable 15-micron, pleated paper filter located in the
carburetor fuel inlet line and secured by two short rub-
ber hoses and clamps. Replace the filter at the intervals
outlined in the Maintenance Schedule.
All vehicles have a fuel return system which requires
an extra nipple on the fuel filter to route vapor back to
the fuel tank. Refer to Fuel Return System.
All vehicles use a woven Saran sleeve-type filter
which is attached to the end of the fuel outlet tube inside
the fuel tank. This filter is rated at 65 microns and
repels water. Under normal conditions it requires no
maintenance or service.
FUEL TANK
The fuel tank on CJ models is attached to a skid plate
which is bolted to the chassis. On Cherokee and Wagon-
eer models, the tank is secured to the chassis by a single
strap at the center, a bracket at the rear, and a bracket
at the front. The Truck models have two straps which
run front to rear. A fuel tank skid plate is optional on
Cherokee, Wagoneer and Truck models. The various fuel
tank and venting arrangements are illustrated in figures
1J-3,1J-4 and 1J-5.
The fuel tank is an external expansion type and is
vented by vapor lines. On CJ models, vapors are routed
to a charcoal canister. Refer to Fuel Vapor Control Sys-
tem. On Cherokee, Wagoneer and Truck models, vapors
are routed through a rollover check valve and vent to
atmosphere. Refer to Fuel Vapor Control System.
Fisl Tank Replacement
Removal—CJ Models
(1) Position jack under tank and remove screws.
(2) Disconnect fuel outlet and return lines, fuel in-
let hose and inlet vent hose.
(3) Lower tank part way and disconnect vent lines.
(4) Disconnect fuel gauge sending unit wire, lower
tank and remove.
Installation—CJ Models
(1) Position tank on jack and raise part way.
(2) Install fuel line, return line, fuel gauge sending
unit wire and vent lines.
(3) Raise tank to installed position, install screws
and tighten.
(4) Install fuel inlet hose and inlet vent hose.
Removal—Cherokee and Wagoneer Models
(1) Remove parking brake cable guide clips.
(2) Remove skid plate, if equipped.
(3) Disconnect one brake cable at connector.
(4) Disconnect four lines at left rear of tank.
(5) Place jack under tank and remove attaching
parts.
(6) Lower tank and disconnect fuel gauge sending
unit wire, fuel outlet line and return line.