Ford COUGAR 1968 Shop Manual page 543

PART 10-6
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Holley Model
4 150
C
4-V
Carburetor
1
Automatic Choke
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1. Position the choke plate shaft
in the air horn and install the choke
plate in the shaft (Fig. 18). Install the
rod seal on the choke rod. Slide the
U-shaped end of the choke plate rod
through the opening in the main body
and insert the rod end through the
inner side of the bore in the choke
I lever. The rod end must face outward.
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Push the rod seal into the retaining
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grooves on the underside of the air
cleaner mounting flange.
2. Position the choke thermostat
lever link and piston assembly in the
choke housing. Position the fast idle
cam assembly on the choke housing
and install the choke housing shaft and
lever assembly (Fig. 20). Position the
lever and piston assembly on the
choke housing shaft and lever assem-
bly. Install the spacer, lock washer
and nut.
3. Lay the main body assembly on
its side and position the choke housing
gaskets on the main body. Insert the
choke rod in the choke housing shaft
lever as the choke housing is placed
in position on the main body. Be sure
the projection on the choke rod is
placed under the fast idle cam s o that
the cam will be lifted when the choke
plate is closed. Install the choke hous-
ing lock washers and screws. Using
needle-nose pliers, install the choke
rod cotter pin.
4. Place the thermostatic spring
housing gasket in position on the
choke housing, engaging the thermo-
static spring on the spring lever; then,
install the housing, clamp and screws.
Adjust the thermostatic spring hous-
ing by aligning the index mark on the
cover with the mid-position mark on
the choke housing.
Moin Body To Throttle Body
1. Invert the main body and posi-
tion the throttle body gasket on the
main body. Place the throttle body on
the main body and slide the secondary
diaphragm rod onto the secondary op-
erating lever as the throttle body is
placed into position. Install the throt-
tle body to main body retaining screws
and lock washers.
2. Secure the secondary diaphragm
rod with t%e retainer.
3. Install the air cleaner anchor
stud.
PRIMARY FUEL BOWL A N D
METERING BLOCK
1. Place the accelerating pump
diaphragm spring and diaphragm in
the accelerating pump chamber. The
diaphragm must be positioned so that
the large end of the lever disc will be
against the operating lever. Install the
cover with the screws finger-tight.
Make sure the diaphragm is centered,
then, compress the diaphragm with
the pump operating lever and tighten
the cover screws.
After the carburetor is assembled,
refer to Common Adjustment and Re-
pair for the correct adjustment of the
accelerating pump.
2. Install the gasket and fuel inlet
and filter fitting.
3. Install the fuel lever sight plug
and gasket. Install the fuel bowl inter-
connecting fuel line fitting and gasket.
4. Install the plug in the fuel bowl
vent rod. Position the spring on the
vent rod. Install the vent rod assem-
bly and bracket on the fuel bowl and
install the retaining screw.
.5. Position the float hinge bracket
on the float arm and install the float
shaft and spring (Fig. 14). Secure the
float assembly to the fuel bowl with
the retaining screws (Fig. 13).
6. Apply petroleum jelly to a new
O-ring seal and slide it on the fuel
inlet needle and seat assembly.
7. Position the fuel inlet needle
and seat assembly in the fuel bowl
through the top of the bowl. Position
the adjusting nut gasket and nut on
the fuel inlet needle and seat assem-
bly. Align the flat on the I.D. of the
nut with the flat on the O.D. of the
fuel inlet needle and seat assembly.
Install the fuel level adjustment lock
screw and gasket.
8. As a preliminary float adjust-
ment, refer to Common Adjustments
and Repairs and perform the Float
Adjustment-Dry procedure (Part 10-1).
9. Using a socket wrench, install
the power valve and gasket in the
metering block (Fig. 12). Be sure to
install the specified power valve. Re-
fer to the specifications for the cor-
rect identification number. The num-
ber is stamped on a flat on the base
of the valve.
10. Using a jet wrench, install the
specified jets in the metering block
(Fig. 11).
11. Install the idle adjusting nee-
dles. Turn the idle adjusting aeedles
in until they just touch the seat, then,
back them off the specified number of
turns for an initial idle fuel mixture
adjustment.
12. Position the metering block
gasket on the dowels located on the
back of the metering block.
Position the metering block and
gasket on the main body. Position the
baffle plate (primary side only) and
the gasket on the metering block.
Place the retaining screws and new
compression gaskets in the fuel bowl.
Position the bowl in place on the me-
tering block while making certain the
fuel bowl vent rod is properly posi-
tioned against the primary throttle
lever. Make sure the accelerating
pump lever adjusting screw rests on
the lever on the accelerating pump
cover.
Tighten the retaining screws.
SECONDARY FUEL BOWL
AND METERING BODY OR
METERING BLOCK
1. Assemble the secondary fuel
bowl, perform a dry float adjustment,
and assemble the metering block by
following procedure steps 3, 5, 6, 7, 8,
10 and 12 under Primary Fuel Bowl
and Metering Block.