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Buick 40 Series 1948 Shop Manual page 113

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3-38
CARTER CARBURETOR
ENGINE FUEL AND EXHAUST SYSTEMS
(112 )
GAUGE
T109-196
10. Drive new idle channel rivet plugs se-
curely into bowl cover using the depression in
Extractor TI09-43.
Figure 3-S6-lnstallation of Intake Ball and Retainer
11. Install intake ball in pump cylinder, then
install ball check retainer. See figure 6-56. Use
rod of Ring Inserter TI09-122U to put retainer
in place and then use sleeve of tool to tap re-
tainer firmly into recess at bottom of pump
cylinder.
12. Install pump strainer, using care to avoid
distorting it or leaving openings around the
edge. Install pump check needle, blunt end first.
Install discharge check plug, then discharge
passage plug with new gasket. See figure 3-53.
13. Install both low speed jets; no gaskets
are used. Install float needle seat with new
gasket, using large screw driver. Tighten seat
firmly but not so tightly as to cause distortion.
See figure 3-52.
14. 2\.ttach float needle to float lever by means
of clip, then install float with lever pin.
15. Adjust Float for Proper Fuel Level. To
obtain the most efficient operation of the car-
buretor, the fuel level must be maintained at
the bottom of the threads of sight hole in the
side of float chamber with engine idling. See
figure 3-17. This level will be produced in prac-
tically all cases by carefully setting the floats
with Float Gauge TI09-196.
(a) With bowl cover inverted (gasket off),
place the float gauge under the middle of the
floats as shown in figure 3-57.
(b) Adjust floats as required so that the
outer sides just touch the upright guides of
gauge, without clearance and without exces-
sive drag on gauge. Adjust the height of both
floats so that the seams just clear the horizon-
Figure 3-S7-Checking Float with Gauge
tal section of gauge. Make both adjustments
by bending float lever with pliers applied at
points "X". (fig. 3-57) ; do not use pressure on
floats.
NOTE: If the Float Gauge
Tl09-196
is not
available, sight down the sides of floats and
align the sides with the small indicator bosses
cast in bowl cover (fig.
3-57),
then adjust the
height with a suitable gauge
%2"
in width or
diameter.
(c) When floats are properly set, turn bowl
cover over and measure the downward travel
of floats from the closed position of needle
valve. Float travel must be
¥2",
measured at
outer end of float, and can be adjusted by bend-
ing the short tongue of float lever which con-
tacts the float needle seat.
_____
(d) After all adjustments are completed,
Figure 3-SB-Assembling Main Body and Bowl COYer

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