Assembly Of Throttle Body; Assembly Of Bowl; Assembly Of Bowl Cover - Pontiac Grand Prix Service Manual

ENGINE FUEL 6B-17
Fig. 68-37 Body to Cluster Passage Identification
5. Inspect cluster casting. If any parts in castings are
loose or damaged, cluster addembly must be replaced.
6. Use new gaskets in reassembly.
ASSEMBLY OF THROTTLE BODY
1. Install idle screw in throttle lever if removed.
2.
Screw idle mixture adjusting needles and springs
into throttle body until finger tight. Back out screw 4
turns as a preliminary idle adjustment.
3. Upend bowl, place new throttle body gasket in
positon and attach throttle body. Tighten screws
evenly and securely.
ASSEMBLY OF BOWL
1. Drop steel pump discharge check ball into pump
discharge hole. Ball is 3/ 16" diameter (do not confuse
with aluminum inlet ball). Install pump discharge
spring and retainer.
2.
Replace cluster and gasket, tighten screws evenly
and securely. Make certain center screw is fitted with
gasket to prevent pump discharge leakage.
3. Replace main metering jets and power valve.
4. Drop aluminum inlet ball check into hole in pump
well. Install pump return spring, pressing with finger
to center it in pump well.
5. Replace pump inlet strainer, pressing carefully into
position.
ASSEMBLY OF BOWL COVER
1. Install choke $ha0 in air horn, then install choke
valve on choke shaft, using two attaching screws.
Letters RP on choke valve should face towards top of
air horn. Center choke valve before tightening screws,
by installing the fast idle lever and choke trip lever.
Maintain approximately .020" clearance between the
fast idle lever and air horn casting. Then tighten choke
valve screws and stake lightly. Then install choke trip
lever and fast idle lever. Choke valve should move
freely in housing.
2. Replace pump outer lever and shaft assembly and
inner lever, tighten retaining screw on inner lever.
3.
Install float needle seat screen and gasket, using
wide blade screwdriver.
4. Install pump plunger assembly with shaft end
pointing inward towards center of air horn casting and
install clip.
5. Install cover gasket.
6. Insert needle in seat, carefully position float and
insert hinge pin.
7. Check float level and float drop adjustments.
FLOAT LEVEL ADJUSTMENT (Fig. 66-50)
With air horn inverted, gasket in place and needle
seated, there should be 9/ 16" clearance between the
lip of the float at toe end and air horn gasket.
Use gauge set J 8556. To adjust, bend float arm at rear
of float. Visually check float alignment after adjusting
float.
Fig. 68-38 Float Level Adjustment