Accelerator Pump And Lever; Removing Piston And Metering Rods - Jeep J-10 Series 1982 Technical & Service Manual

1J-5Z FUEL SYSTEMS
NOTE: When using an overhaul kit, use all parts in
cluded in the kit.
NOTE: Flooding, hesitation on acceleration, and other
performance problems are in many instances caused by
the presence of debris, water, or other foreign matter in
the carburetor. To aid in diagnosing the problem, care
fully remove the carburetor from the engine without
removing the fuel from the bowl. Examine the bowl
contents for contamination as the carburetor is
disassem bled.
Disassembly
(1) Place carburetor on repair stand to protect
throttle valves from damage and to provide stable work
base. Remove stepper motor, if equipped.
(2) Remove retaining clip from accelerator pump
arm link and remove link (fig. 1J-100).
(3) Remove cover and gasket from top of air horn.
(4) Remove screws and locks from accelerator pump
arm and vacuum piston rod lifter. Slide pump lever out
of air horn. Remove pump arm and rod lifter. Lift vac
uum piston and metering rod assembly straight up and
out of air horn. Remove vacuum piston spring (fig. 1J-
101).
PUMP
ARM
SCREWS
AND LOCKS
ACCELERATOR
PUMP LINK
80445
Fig. 1J-100 Accelerator Pump and Lever
(5) Disconnect clips and remove choke rod from
choke housing lever and choke lever.
(6) Remove screw and lever from choke shaft.
(7) Remove vacuum hose from carburetor main
body and choke vacuum diaphragm. Remove choke dia
phragm, linkage and bracket assembly. Place dia
phragm aside to be cleaned separately.
(8) Remove fast idle cam retaining screw. Remove
fast idle cam, choke link and clip.
(9) Grind off head of torque-head screws and re
move choke cover assembly and housing from throttle
body.
NOTE: When cover is removed from housing, remove
remaining portion of screws from housing by twisting
counterclockwise with locking pliers.
(10) Remove air horn retaining screws and lift air
horn straight up away from main body. Remove sole
noid, if equipped. Discard gasket (fig. 1J-102).
(11) Invert air horn and compress accelerator pump
drive spring. Remove S-link from pump shaft. Remove
pump assembly.
(12) Remove fuel inlet needle valve, seat and gasket
from main body.
(13) Remove float fulcrum pin retainer and baffle.
Remove floats and fulcrum pin (fig. 1J-103).
(14) Remove main metering jets (fig. 1J-104).
(15) Remove venturi cluster screws. Remove venturi
cluster and gaskets from main body. Discard gaskets.
Do not remove idle orifice tubes or main vent tubes from
cluster.
(16) Invert carburetor main body and drop out accel
erator pump discharge check valve ball (fig. 1J-105).
METERING
RODS
Fig. U-l01 Removing Piston and Metering Rods
80446
The cleaning and inspection procedure listed below
does not include those parts contained in the carburetor
overhaul repair kit. Install all gaskets and parts in
cluded in the repair kit when the carburetor is assem
bled. Discard original gaskets and replaced parts.