Ford Granada 1985-1994, Owner'S Manual

Page: 125 / 254

6 If necessary, dismantle the automatic choke
unit (see illustration).
7 Refitting is a reverse of the removal
procedure noting the following points.
a)
Ensure that the pull-down diaphragm is
correctly seated prior to refitting the cover.
b) Ensure that the O-ring is correctly seated
in the choke housing prior to refitting.
c) With the choke housing installed check
and, if necessary, adjust the vacuum pull-
down diaphragm.
d) Refit the heat shield ensuring that the hole
in the shield engages with choke housing
peg.
e) Engage the bi-metal spring with the choke
lever and refit the bi-metal housing. Align
the marks made, or noted, on removal and
securely tighten the housing retaining
screws.
f) On completion check and, if necessary,
adjust the fast idle speed.
Vacuum pull-down adjustment
8 This procedure is as described in Section 18,
referring to the Specifications at the start of this
Chapter for the specified pull-down setting.
Fast idle speed adjustment
9 Check the idle speed and mixture adjustment
as described earlier in this Chapter and leave
the tachometer connected. Note that the idle
speed must be correct before attempting to
check or adjust the fast idle speed.
10 Warm the engine up to normal operating
temperature and remove the air cleaner.
11 Partially open the throttle valve then close
the choke valve until the fast idle adjustment
screw is positioned on the third (middle) step
of the fast idle cam (see illustration) and
release the throttle valve.
12 Start the engine without touching the
throttle pedal and check that the engine speed
is within the speed range given in the
Specifications at the start of this Chapter.
13 If this is not the case, adjust the engine
speed by rotating the fast idle adjusting screw
until the speed is within the specified range.
Operate the throttle pedal and check that the
engine returns to the specified idle speed.
14 Stop the engine then disconnect the
tachometer and refit the air cleaner.
1 Disconnect the battery negative lead.
2 Remove the air cleaner assembly.
3 Disconnect the throttle kicker vacuum hose.
4 Withdraw the plastic shield from the throttle
kicker (see illustration).
5 Remove the two securing screws, then
disconnect the operating rod from the throttle
linkage, and withdraw the assembly from the
carburettor.
6 The assembly can be dismantled by
removing the four securing screws and lifting
off the diaphragm cover. Recover the spring.
7 Carefully withdraw the diaphragm and the
operating rod assembly from the housing.
Examine the condition of the diaphragm, and
renew it if necessary.
8 Clean the mating faces of the housing and
the diaphragm cover.
9 Commence reassembly by inserting the
diaphragm and operating rod assembly into
the housing.
10 Refit the spring, and the cover, ensuring
that the spring is correctly located, and tighten
the securing screws progressively to avoid
distorting the diaphragm.
11 Further refitting is a reversal of removal,
but before refitting the plastic shield, check
the throttle kicker adjustment as described in
the following paragraphs.
Adjustment
12 Warm the engine up to normal operating
temperature, and check the idle speed and
mixture settings as described earlier in this
Chapter.
13 Remove the air cleaner assembly.
14 Withdraw the plastic shield from the
throttle kicker, if not already done.
15 Disconnect the throttle kicker vacuum
hose, and connect the throttle kicker directly
to the inlet manifold using a length of tubing.
27 Weber 2V TLD carburettor -
throttle kicker removal, refitting
and adjustment
Fuel and exhaust systems 4•13
4
26.11 Fast idle speed adjustment - Weber
2V TLD carburettor
A Fast idle cam
B Fast idle screw shown on middle step of cam
26.6 Exploded view of the automatic choke mechanism - Weber 2V TLD carburettor
A Upper choke operating link
B Fast idle cam return spring
C Spindle sleeve D Connecting rod and lever assembly
E Pulldown link
F Actuating lever
27.4 Throttle kicker assembly - Weber 2V TLD carburettor
1 Fuel inlet
2 Choke plate
3 Accelerator pump cover
4 Throttle kicker pivot lever 5 Plastic cover
6 Throttle kicker
7 Secondary throttle valve vacuum
diaphragm