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Buick 40 Series 1948 Shop Manual page 125

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3-50
STROMBERG CARBURETOR
ENGINE FUEL AND EXHAUST SYSTEMS
(
124 )
body from the throttle valve body, then remove
the idle channel reducer wires.
marking the parts, remove the valves and the
throttle lever and stem
assembly.
5TRAIN
ER- - -
' \
VALVE
Figure 3-86-Marks on Throttle Valves
Figure 3-84-Removing
Inle
t
Check Valve
16. Remove pump inlet
check
valve plug and
gasket.
Remove strainer and inlet check val
ve.
See figure
3-84.
Figure 3-8S-Removing
Lead Ball Plug
17.
Remo
ve
all lead
ball
plugs from main
bod
y,
using Plug Remover
T-25052.
See figure
3-85. Be careful not to damage the plug seats
in bod
y.
18.
Remove both idle needle valves and
sp
r ings.
If
carburetor is exceptionally dirty it
may be
ad
visable
to remove the adjacent taper
dri ve
plugs f
rom throttle
body
;
otherwise these
plugs should be left in
place.
19. Befor e
throttle valves
are
removed,
they
should be marked so that
each
valve
may be
re-
installed in the barrel from
which
it
was
r
e-
moved and may be accurately positioned in the
barrel of throttle body. Using a sharp scriber,
lightly scratch one line on one valve and its
barrel and two lines on the other val
ve
and bar-
reI; also scribe lines on each valve along both
edges of the valve stem. See figure 3-86. After
b. Cleaning Carburetor Parts
Regardless of the number of new parts that
are used in rebuilding a carburetor, the job in
the end will not be
satisfactory
unless all metal
parts are
thoroughly cleaned. Because
of the na-
ture
of carburetor
parts,
with numerous small
passages sub
ject
to fouling with t
enacious
car-
bon and gum
deposits, ordinary
cleaning proc-
esses are entirely inadequate. The correct pro-
cedure is to use a cleaning bath in
which
metal
parts can be immersed and "soaked" for suffi-
cient time
after disassembl y
to
thoroughly
clean
all
.surfaces
and channels.
Bendix Carburetor Cleaning
Solvent
has been
developed
especially for cleaning
carburetors,
and is recommended for this
purpose.
Regard-
less of the cleaning
material
used,
however,
be
sure to thoroughly rinse the parts in
kerosene,
distillate, or white gasoline to remove all gum-
my deposits that have been
softened by
the
cleaner.
Before
immersing in the cleaning
bath,
all
lead ball plugs and taper drive plugs should be
removed so that the cleaner can penetrate and
wash through the
channels,
thus removing all
foreign material. Removal of all carbon f
rom
the inside of the throttle barrel is particularly
important.
c.
Inspection
of Ca
r bur et or Parts
All metal
parts
should be
thorou ghly cleaned
and each part should be carefully inspected for
wear or damage as follows:
1. Automatic
Chok
e.
Inspect choke parts as
described in paragraph
3-31.
2. Air Horn. Make certain that the vacuum
cylinder is thoroughly
clean.
Check wear of

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