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PART 10-1-
GENERAL FUEL SYSTEM SERVICE
10-7
cover, and
cover gasket should
be
replaced
one at a time with a new
part and the
test repeated
unW
the
source
of leakage has been found. If
the
source
of
leakage cannot be
found,
the gasket seats are darnapd
and
the
defective parts should be
replaced.
A
few bubbles may be noticed Im-
mediately upon attaching the vacu-
EJ
COMMON ADJUSTMENTS AND REPAIRS
All XA/ZF Falcon/Fairlane engines are
equipped with carburettors that feature
limiter caps fitted to the idle mixture
adjustment
screws.
The purpose of the
limiter caps is to limit the
maximum
idle
fuel/air mixture richness and so control
the quality of gases discharged from the
exhaust system.
Note: Carbon Monoxide emission level at
idle speed not to exceed
4.5%.
Two types of limiter cap are used on
current production carburettors.
1. Stromberg lV and 2V
carburettors:
a free turning cap is fitted
over the
head of
the idle mixture adjusting screw/s prevent-
ing any alteration to the factory setting.
·
2.
Motorcraft 2V and 4V
carburettors:
fixed caps are fitted to the idle
mixture
screws and adjustment is restricted to the
range provided for by tabs
on
the limiter
caps and stops incorporated in the carbur-
ettor
body.
Under no circumstances should the idle
adjusting limiters or
the
limiter stops be
mutilated or deformed to render the limi-
ters
inoperative.
A satisfactory idle should be obtainable
within the range of the idle adjusting
limiters providing all other engine systems
are operating within specifications.
For idle speed and mixture adjustment
procedures refer to the specific carburettor
section.
THROTTLE
LINKAGE
ADJUSTMENT
The engine idle speed and
fuel
mixture must be adjusted to specification
prior to performing throttle linkage
ad-
justments.
For these adjustments, refer
to the applicable carburettor
section.
Views of the throttle (accelerator)
linkage for the various car models are
shown in Figs. 3, 4, 5 &
~·
ACCELERATOR
PEDAL IDLE
HEIGHT
ADJUSTMENT
Six-
Cylinder
Refer to
Figs.
3 & 4 for a view of the
accelerator linkage and the accelerator
pedal specified idle
height.
l.
Warm up the engine
and
adjust
the
idle
speed
to
specification.
Refer to the applicable carburettor sec-
tion for procedure and to Part 10-9
for specifications.
2.
Remove the clip
holding
the
trunnion on the adjustable rod
in
engage-
ment with the accelerator shaft.
3.
Adjust the
trunnion on the
rod
to
give
the
specified
idle height at the accel-
erator pedal.
4.
Replace the
clip
holding the
trunnion in engagement with
the ac-
celerator shaft.
5.
If
the vehicle is
fitted with an
automatic
transmission
adjust
the
kickdown cable. Refer to Group
7
for
the
procedure.
6.
Lubricate
all pivot points
with
engine oil.
ACCELERATOR PEDAL IDLE
HEIGHT
ADJUSTMENT
V-8
Engines
Refer
to
Figs.
5 and
6 for a view of
the accelerator linkage and the accelera-
tor pedal specified idle height.
l.
Adjust
the
idle
(hot
engine)
speed to specification. Refer to
the
applicable carburettor section
for pro-
cedure and to Part
l
Q.
9 for specifications.
2.
With the engine stopped make
sure the carburettor choke
plate
is
fully
opened.
3.
Detach
the
adjustable rod assembly
from the
bellcrank.
4. Adjust
trunnion
connecting the
rod
to the accelerator
shaft to give the
speci-
fied pedal height.
5.
Adjust the kickdown
cable.
Refer
to Group 7 for procedure.
6.
Lubricate the pivot
points
at
both
ends
of
the
rods
and
on
the bellcrank using engine oil.
CARBURETTOR
SPACER AND/OR
GASKETS REPLACEMENT
It
is
necessary
to remove the car-
buretor
from
the car to replace a
carburettor
spacer
and/or
gaskets
Refer to
the
Carburettor Removal
and
Installation
procedure steps in
this group that
pertain to the type
of carburettor installed
on the car.
um line. The bubbllnr should stop
within appro:.Umately 111 seconds or
after the air has been removed
from
the system. If no bubbles are seen,
the power valve, gaskets and cover
are sealing properly.
THROTTLE LINKAGE REPAIR
ACCELERATOR PEDAL
REPLACEMENT
Refer to Figs. 3, 4,
5,
6
for views of
the accelerator
pedal
for the applicable
car model.
1. Remove
the
retaining
screw
securing
the
pedal
to the shaft. Remove
the accelerator pedal
and spring.
2. Lubricate the accelerator
pedal
hinge points with the
specified lubri-
-cant
<Group
19)
and position the ac-
celerator pedal and
spring assembly
on the accelerator
shaft. Apply 2 dots of
locking
compound (e.g. Loctite) to the
screw thread and
install the retaining
screw.
Make sure the
spring
is
properly
seated on the pedal and
the accelerator
shaft. Install the retaining
nut.
ACCELERATOR SHAFT
ASSEMBLY REPLACEMENT
200/250 CID with Borg
Warner
trans-
missions.
Refer
to
Figs.
3 & 4 for a view of the
accelerator
linkage.
1. Remove the accelerator pedal
assembly. Refer
to previous operation.
z.
Disconnect
the
accelerator re-
tracting spring.
3. Remove
the
clip
holding the-
adjustable rod in engagement with the
accelerator
shaft.
t.
Undo
the four
screws
holding
the two accelerator shaft
support.
brackets to
the
bulkhead
and remove-
the accelerator shaft.
5. Position
the
new
accelerator
shaft and replace and
tighten
the-
four screws holding
the
two
support
brackets.
Ensure that the
rubber
sealing pad is correctlY seated
against
the bulkhead.
6. Replace
the
accelerator
pedal
assembly.
Refer to Accelerator Pedal
Replacement in this section
for the
proper procedures.
'1. Connect
the
clip holding
the
adjustable rod
in engagement with the
accelerator shaft.
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