Cadillac 60 Series 1963 Shop Manual page 256

FUEL AND EXHAUST
10-21
Fast Idle Cam
.022" Wire
Gage J-7714-5
Primary Throttle Valves
Fig. 10-26 Fast Idle Adjustment
of fast idle cam. Adjust fast idle screw to obtain
a clearance of .022 inch between throttle valves
and primary bore of throttle body on side opposite
idle adjusting needles. Measure throttle opening
with .022 inch Wire Gage, J-7714-5.
NOTE: This procedure will provide a fast
idle which is very close to correct; however,
fast idle should be reset with engine running.
o. Choke Assembly
1. Place new choke housing gasket on choke
housing.
2. Install intermediate choke shaft lever in
choke housing from side toward carburetor.
3. Attach choke housing to bowl with self-
locking attaching screws.
4. Install choke piston on lever with piston pin.
5. Install piston assembly into housing with
tang facing outward. Slide piston into vacuum
cylinder. Place piston lever over intermediate
choke lever shaft, and retain with screw while
holding lever toward choke housing.
6. Install intermediate choke rod in choke shaft
lever. Grooved end of rod goes into choke shaft
lever. Retain with clip.
p. Intermediate Choke Rod Adjustment
(Fig. 10-27)
Choke vacuum piston must be properly position-
ed with respect to vacuum slots in choke housing
bore to provide proper choke pull-off action.
Choke Valve
Z "ifr '"ton Bore Choke Piston j ;
Fig. 10-27 Intermediate Choke Rod Adjustment
1. Open throttle slightly, hold choke valve
closed and push lightly on end of choke piston to
remove all play in linkage. Then check to see
if choke piston is flush with choke piston bore.
2. Bend intermediate choke rod if necessary
to Correctly position choke piston.
<t- Choke Adjustment
Choke mechanism must be absolutely free in
any position. Mechanism is free if choke will
fall open from its own weight.
.040" Wire Gage J-7714-6
Choke Counter
weight Lever
Choke Trip Lever
Choke Rod
Fast Idle Screw
Bending
1137
Fast Idle Cam
Fig. 10-28 Choke Rod Adjustment