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PART 10-4 MOTORCRAFT MODEL 2100 CARBURETTOR
10-45
ASSEMBLY
Make sure all holes in the new gaskets
have been properly punched and that no
foreign
material has adhered to the
gaskets.
Make sure the accelerating pump
diaphragm is not torn or cut.
The Motorcraft Model 2100-D 2-V
carburettor assembly is shown in
Fig. 25.
MAIN BODY
1. Slide the throttle shaft assembly
into the main
body.
2.
Refer to the lines scribed on the
throttle plates and install the throttle
plates in their proper location with the
screws snug, but not tight.
3.
Close the throttle plates. Invert
the main
body,
and hold it up to the light.
Little or no light should show between the
throttle plates and the throttle
bores.
Tap
the
plates
lightly with a screwdriver handle
to seat them. Hold the throttle plates
closed and tighten and stake the retaining
screws.
When staking the screws, support
the shaft and plate on a block of wood or
a metal bar to prevent bending of the
shaft.
4.
If necessary, install the fast idle
screw pin and the screw on the fast idle
adjusting lever.
5.
Install the anti-stall
dashpot,
if so
equipped.
6.
If the fast idle lever was removed,
place the fast idle adjusting lever assembly
on the throttle shaft and install the
retaining washer and nut.
7.
If
the
Elastomer
valve
was
removed, lubricate the tip of a new
Elastomer valve and insert the tip into the
accelerator pump cavity centre
hole.
Using
a pair of needle nosed pliers, reach in to
the fuel bowl and grasp the valve
tip.
Pull
the valve in until it seats in the pump
cavity wall and cut off the tip forward of
the retaining
shoulder.
Remove the tip
from the bowl.
8.
Install
the accelerating pump
diaphragm return spring on the boss in the
chamber (Fig. 22). Insert the diaphragm
assembly in the cover and place the cover
and diaphragm assembly into position on
the main body. Install the cover screws.
9.
Insert
the
accelerating
pump
operating rod into the inboard hole of the
accelerating pump actuating lever. Position
the accelerating pump operating rod
retainer over the specified hole in the
over-travel lever, Press the ends of the
retainer together
;
then, at the same time,
insert the operating rod through the
retainer and the hole in the over-travel
lever. Release the
ends
of the retainer to
secure the
rod.
10. Invert the main body. Install the
power valve (enrichment valve) and new
PUMP COVER AND
L
EVER
RETURN SPRING
j
,
~
DIAPHRAGM
V1296-A
FIG. 22- Accelerating
Pump
Assembly
FIG. 23-
Power
Valve
Removal
or
Installation
SCRIBE LINES AND
IDENTIFICATION MARKS
FIG. 24 - Throttle Plate Removal
81363-8
gasket with a wrench (Fig.
23).
Tighten
the valve securely.
11. Install the idle mixture adjusting
screws (needles) and springs (Fig.
25).
Turn the needles in gently with the fingers
until they just touch the
seat,
then back
them off 1 1/2 turns for a preliminary idle
fuel mixture adjustment.
Do
not install
the idle mixture limiters at this time.
Install the power valve cover and new
gasket. The power valve cover must be
installed with the limiter stops on the
cover in position to provide a positive stop
for the tabs on the idle adjusting limiters.
12.
Install the main jets and the fuel
inlet seat, filter
screen,
and new
gasket.
Be
sure the correct jets are installed.
13. Install
the
fuel
inlet
needle
assembly in the fuel 'inlet seat. Fuel inlet
needles and
seats
are matched assemblies.
Be sure the correct needle and seat are
assembled together.
14. Slide the float shaft into the float
lever (Fig. 20). Position the float shaft
retainer on the float
shaft.
15
.
Insert the float assembly into the
fuel bowl and hook the float lever tab
under the fuel inlet needle assembly.
Insert the float shaft into its guides at the
sides of the fuel bowl.
16. With the use of a screwdriver,
position the float shaft retainer in the
groove on the fuel inlet needle seat (Fig.
21 ). Check the float setting.
17
.
Drop
the
accelerating
pump
discharge ball in to the passage in the main
body.
Seat the ball with a brass drift and a
light hammer. Make sure the ball is free in
the bore. Drop the accelerating pump
discharge weight on top of the ball.
Position the new booster venturi gasket
and the booster venturi in the main body.
Install the air distribution plate and the
accelerator pump discharge screw. Tighten
the screw.
AUTOMATIC CHOKE
1.
Position the fast idle cam lever on
the
thermo
~
tatic
choke shaft and lever
assembly. The bottom of the fast idle cam
lever adjusting screw must rest against the
tang on the choke
lever.
Insert the choke
lever into the rear of the choke housing.
Position the choke lever so that the hole in
the lever is to the left side of the choke
housing.
2.
Install the fast idle cam rod on
the fast idle cam
lever.
Place the fast idle
cam on the fast idle cam rod and install
the retainer. Place the choke housing
vacuum pick-up port to main body gasket
on the choke housing on the main
body.
Position the gasket, and install the choke
housing retaining screws. Install the fast
idle
cam retainer. Install the
thermostatic
spring housing.
AIR HORN
Refer to Fig. 25 for the correct
location of the
parts.
1.
If the choke plate shaft was
removed,
position the shaft in the air
horn, then install the choke plate rod on
the end of the choke shaft.
2.
If the choke plate was removed,
insert the choke plate into the choke plate
shaft.
Install the choke plate screws snug,
but not tight. Check for proper plate fit,
binding in the air horn and free rotation of
the shaft by moving the plate from the
closed position to the open
position.
If
necessary, remove the choke plate and
grind or file the plate edge where it is
binding or scraping on the air horn
wall.
If
the choke plate and shaft moves freely,
tighten the choke plate screws while
holding the choke in the fully closed
position.
Stake the screws. When staking
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