Cadillac 54-6219 1954 Shop Manual page 259

12-fl
ENGINE FUEL AND EXHAUST
CAUTION: Tighten idle mixture adjusting
screws
carefully, so as not to groove needles or
enlarge seats. peck out each screw i to 1-1/4
turns from
the seated position for initial adjust-
meat.
b. Throttle Body hutollatlon
I, Place new throttle iy
to hoWl gasket on
-
hotrom surface of howl with bowl inverted onwnrk-
bench,
NOTE: Casket is not reversible. Large and
small projecting tabs must he pIeced on primary
side of Fowl, surrounding the vacuum passage
to
the power valve piston.
2. Place throttle body assembly on howl with
primary throttle lever and fast idle' cam on same
side of bowl as fuel sight plugs, as shown in Fig.
12-48.
3, Start S outer Phillips attaching screws wills
lcck,ashers through gasket Into howl.
4. Install and tighten large contor screw with
lockNashsr, using a screwdriver,
5, Tighten 3 oilIer screws uniformly, using a
i'iiilllpe screwdriver.
fig, 2-47 Bowl Aebl-f Ojianembled
6. If howl cover was not removed, install 3 fl-
age rods as outlined in Note 121, If any linkage parts
were replaced, pcflorn adjustments 2c through
ij.
Bowl Assenibly
1, lnstau fuel sight plugs.
2. With bowl upright, drop ball and copper spring
into Fore under primary venturi cluster location.
Refer to Fig. 12-49 - Then put"i s1ot into the
fixed position of the bore causing the spring to be-
come compressed,
3, i'Iace new gaskets o'i prImary and secondary
venturi clusLers and instalJ in fowl, with 3 screws
and lucI,ashere in each.
NOi'E; The primary venturi cluster contains
the accelerating pump iets, -the secondary does
iloL
and therefore does not have added metal in
front of the center screw. Also notice the pro
jecting tang which aligns each cluster in the
howl. To the rear of the taug is found the cluster
number I or 1.
4, Sort out primary and secondary main metering
:**..i
dl
El1. IZ-4 In,telllng Throttle cody
jets.