Altitude Compensator - Jeep J-10 Series 1982 Technical & Service Manual

Inspect the choke valve for nicked edges and for ease of
operation and repair if necessary. Ensure all carbon and
foreign residue has been removed from the automatic
choke housing. Examine the throttle shaft for excessive
With the aneroid removed from the chamber, spring
tension should fully close the air valve. Examine the
position of the spring in the retainer and ensure it is
properly seated (fig. 1J-130). Inspect the rubber seal on
the valve stem. Examine the aneroid assembly and en
sure that the atmospheric pressure inlet hole is free of
debris.
looseness or binding in its bore. Examine the throttle
valves for burrs that could prevent proper closure. In
spect the main body, air horn, booster venturi assem
blies, choke housing and choke cover, power valve cover
and accelerator pump cover for cracks. Replace the float
if the arm needle contact surface is grooved. If the float
is serviceable, polish the needle contact surface of the
arm with crocus cloth or equivalent material. Replace
float shaft if worn. Replace all screws and nuts that
have stripped threads. Replace all distorted or broken
springs. Inspect all gasket mating surfaces for nicks and
burrs. Repair or replace any parts that have a damaged
gasket surface.
VALVE
STEM
VALVE
SPRING
SPRING
RETAINER
70432
Fig. 14-130 Altitude Compensator
Assembly
Refer to figure 1J-123 for parts identification.
NOTE: Ensure all holes in the replacement gaskets
have been properly punched and that no foreign mate
rial has adhered to the gaskets. Inspect vacuum dia
phragms for tears or cuts.
(1) Install fast idle speed adjustment screw and
spring on fast idle lever.
(2) Install solenoid.
FUEL SYSTEMS 1J-67
(3) Place fast idle lever assembly on throttle shaft
and install retaining washer and nut.
(4) Lubricate tip of replacement elastomer valve
and insert tip into accelerator pump cavity center hole.
(a) Using needlenose pliers, grasp valve tip
from inside fuel bowl.
(b) Pull valve in until it seats in pump cavity
wall. Cut off tip forward of retaining shoulder.
(c) Remove tip from bowl.
(5) Install accelerator pump diaphragm return
spring in chamber depression. Insert diaphragm assem
bly in cover, place cover and diaphragm assembly into
position on main body and install two right-side cover
screws.
(6) Position bowl vent bell crank and bracket as
sembly over accelerator pump cover left-side holes. En
sure vent lever is positioned behing pump lever. Install
retaining screws.
(7) Insert accelerator pump operating rod into in
board hole of accelerator pump actuating lever.
(8) Position accelerator pump operating rod re
tainer over hole 3 in overtravel lever.
(9) Invert main body and install power valve and
replacement gasket. Tighten valve securely.
(10) Install power valve cover and replacement
gasket.
NOTE: Install the power valve cover with the exten
sions adjacent to the main body to provide entry for the
slots on the idle mixture adjustment screw caps.
(11) If removed, install idle mixture adjustment
screws and springs. Turn screws in gently with fingers
until they lightly seat, then back off number of turns
recorded during removal for preliminary idle fuel mix
ture adjustment.
NOTE: Do not install idle mixture screw caps at this
time.
(12) Install main jets.
(13) Install fuel inlet seat and replacement gasket.
Install fuel inlet needle assembly in fuel inlet seat. Fuel
inlet needles and seats are matched assemblies. Ensure
correct needle and seat are assembled together.
(14) Slide float shaft into float lever. Position float
shaft retainer on float shaft.
(15) Install float damper spring with short wire un
der float lever (fig. 1J-131).
(16) Insert float assembly into fuel bowl and hook
float lever tab under fuel inlet needle assembly. Insert
float shaft into its guides at sides of fuel bowl.
(17) Press float shaft retainer into groove on fuel
inlet needle seat and adjust float level. Refer to Service
Adjustment Procedures.
(18) Drop accelerator pump discharge ball into pas
sage in main body.
(19) Position replacement booster venturi gasket and
booster venturi in main body.