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Buick 40 Series 1948 Shop Manual page 87

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3-12
ADJUSTMENTS-REPLACEMENTS
ENGINE FUEL AND EXHAUST SYSTEMS
(86)
d. Cleaning Carburetor Inlet Strainer
1. On
Carter carburetor remove brass
strainer nut and gasket from carburetor bowl
cover and lift strainer out of well in bowl
cover.
See figure 3-13.
On Stromberg carburetor, disconnect fuel
pipe from gasoline filter then remove filter with
carburetor inlet fitting. Remove strainer from
carburetor air horn. See figure 3-14.
2. Clean strainer in Bendix Carburetor
Cleaning Solvent, or its equivalent, to remove
all traces of dirt and gum, then rinse in kero-
sene, distillate, or white gasoline. Gently blow
through strainer with air hose.
3. When reinstalling Carter strainer make
sure that strainer nut gasket is in good condi-
tion and nut is tightened
securely.
When reinstalling Stromberg strainer coat
threads of inlet fitting with joint compound
and tighten fitting securely.
INLET
FITTIN G
FIL TE
R
Figure
3-14-Removal
of Strainer-Stromberg Carburetor
3-10 THROnLE LINKAGE ADJUSTMENT
The throttle linkage must work freely and
be adjusted so that the accelerator pedal can
move the throttle valve smoothly from fully
closed to wide open positions, and operate the
choke unloader in the wide open position.
Make sure that accelerator pedal is securely
fastened to floor pan and Rod does not bind in
hole through floor mat. Throttle return spring
must be strong enough to pull throttle to closed
position against throttle stop screw.
When accelerator pedal is released, the
throttle must close against the throttle stop
screw.
When pedal is pressed all the way
down,
the throttle must fully open to the throttle stop
on
carburetor.
a. Throttle Linkage Adjustment-Syncro-
Mesh Transmission Cars
1. Disconnect the throttle operating rod ball
joint from the throttle lever and open the
throttle valve to wide open position against its
stop.
2. While a second man presses accelerator
pedal firmly against the floor mat, which must
be in place, adjust the ball joint on throttle
operating rod so that the screw will just enter
the upper hole in throttle lever.
3. Turn ball joint 1 or 2 turns clockwise on
rod and connect ball joint to throttle lever. The
desired adjustment is to obtain full opening of
throttle valve when accelerator pedal strikes
floor mat rather than having the stop on throttle
lever strike the boss on throttle body.
4. Hold choke valve closed and check for
proper operation of choke unloader when accel-
erator is pressed to floor mat. If choke unloader
does not operate properly, adjust as described
in paragraph 3-23 (Carter) or 3-30 (Strom-
berg) .
EQUAL.l12Z~ER~-I!I!I~i
SHAFT-
ADJUSTING
SCREW
-
-
-=-=
BRACKET
---"~
LEVER
-
--:::::---'l'
ACCElERATOR
ROD BALL
JOINT - - . - ; :
Figure 3-15-Throttle Dash Pot Adjustment-Dynaflow
Drive
Cars
b. Throttle Linkage and Dash Pot
Adjustment-Dynaflow Drive Cars
1. With engine idling at 450 RPM, check
clearance between the stop on lever at lower
end of equalizer shaft and the shaft lower
bracket. See figure 3-15. If clearance is not
Y32"
to Y16", adjust throttle operating rod at
ball joint to obtain
Y32"
to Y16" clearance.
2. With engine shut off, check for full open-
ing of throttle valve when accelerator pedal
hits the floor mat, which must be in place. Full
opening should be obtained when pedal strikes
floor mat, rather than having the stop on
throttle lever strike the boss on throttle body.
Adjust accelerator pedal rod at ball joint, if
necessary, to obtain full opening of throttle
valve.
3. Hold choke valve closed and check for
proper operation of choke unloader when accel-
erator pedal is pressed to floor mat. If choke

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