Cadillac 60 Series 1963 Shop Manual page 261

10-26
FUEL A N D EXHAUST
kets by removing four attaching screws with
lock washers.
4. Remove two Phillips head screws and re-
move hot idle compensator and gasket, Fig. 10-38.
Be careful not to damage the bi-metal strip.
5. Mark secondary Venturis for pump or choke
side and remove both secondary Venturis and
gaskets. by removing four attaching screws with
lock washers.
6. Remove two float bowl baffles.
7. Remove auxiliary throttle valve assembly,
Fig. 10-39.
8. Remove accelerator pump, and pump re-
turn spring.
9. Remove idle mixture screws and springs,
Fig. 10-39.
10. Remove large idle air adjustment screw
and spring, Fig. 10-39.
11. Remove gaged check ball plug from float
chamber on pump side.
12. Remove primary and secondary metering
jets.
25. Carter AFB Carburetor Assembly
NOTE: Carburetor s h o u l d be completely
cleaned and inspected before assembly as out-
lined in Note 21. Always use new gaskets when
reassembling carburetor.
Secondary Metering Jets
Hot Idle
Compensator
l Secondary
\ Venturi
Caged
Check Ball
Pump jet Cluster/ Pump
Primary Metering Jets
R e t u r n S p r i n Q
Fig. 10-38 Top View of Bowl Assembly
a. Bowl Assembly
1. Install primary and secondary metering jets.
Primary metering jets have the larger holes.
2. Install gaged check ball plug in bottom of
float chamber on pump side.
3. Install idle air adjusting screw and spring.
Initial adjustment should be three complete turns
from fully seated position.
4. Install idle mixture screws and springs.
Turn screws in finger tight and then back out
1-1/2 turns for approximate adjustment.
5. Place auxiliary throttle valves in position,
Fig. 10-39.
6. Install the two primary and the two second-
ary venturi gaskets.
NOTE: The primary gaskets are different
from the secondary gaskets and caution should
be taken to make sure they are installed cor-
rectly in their respective sides.
7. Position secondary Venturis on choke and
pump sides of carburetor as marked during dis-
assembly. Auxiliary feed holes should be toward
center of carburetor. Tighten four screws with
lockwashers. A built in interference will prevent
installing the secondary clusters on the wrong
side.
8. Install hot idle compensator and gasket on
secondary side using two Phillips head screws
with lock washers, Fig. 10-38.
9. Install primary Venturis on choke and pump
sides of carburetor as marked during disassem-
bly, with vent tubes toward secondary side of
carburetor, Fig. 10-39. A built in interference
will prevent installing the primary clusters on
the wrong side.
10. Insert pump discharge check needle with
point down.
11. Install pump jet cluster and gasket, using
two screws with lockwashers, Fig. 10-38.
12. Install float bowl baffles with trademark
facing primary side of carburetor.
13. Place pump plunger return spring in pump
bore, Fig. 10-38.
NOTE: This spring is matched in tension to
the accelerator pump assembly. Install only the
correct number spring.
b. Bowl Cover Assembly
1. Install new bowl cover gasket.