Removing Inlet Needle Seat; Rear Vacuum Break; Throttle Body Attaching Screws - Pontiac TRANS AM 1977 Service Manual

6C-46
1977 PONTIAC SERVICE MANUAL
Fig. 6C-82 Removing Inlet Needle Seat
Fig. 6C-83 Rear Vacuum Break
T O BOWL ATTACHING
SCREWS.
Fig. 6C-84 Throttle Body Attaching Screws
NOTE: It is not necessary to remove baffle plate from
beneath the thermostatic coil. Distortion of the
thermostatic coil may result if forced off the center
retaining post on the choke cover.
2. Remove choke housing assembly from float bowl by
removing retaining screw and washer inside the choke
housing (Fig. 6C-85). The complete choke assembly can be
removed from the float bowl by sliding outward.
3. Remove lower choke lever from inside float bowl
cavity by inverting bowl.
4. Remove plastic tube seal from choke housing or float
bowl.
I
ASTIC TUBE SEAL
CHOKE HOUSING
Fig. 6C-85 Choke Housing
CAUTION: Plastic tube seal should not be
immersed in carburetor cleaner.
5. To disassemble intermediate choke shaft from choke
housing, remove coil lever retaining screw at end of shaft
inside the choke housing. Then remove thermostatic coil lever
from flats on intermediate choke shaft. Remove intermediate
choke shaft from the choke housing by sliding outward. The
fast idle cam can now be removed from the intermediate
choke shaft.
CAUTION: Remove the cup seal fiom inside
choke housing shafi hole
if
the housing is to be
immersed in carburetor cleaner. Also, remove the
cup seal !?om the float bowl plastic insert for bowl
cleaning purposes. DO NOT ATTEMPT TO
REMOVE PLASTIC INSERT.
Throttle Body
I. Remove pump rod from throttle lever.
2. Remove idle mixture screws and springs.
CLEANING A N D INSPECTION
The carburetor parts should be cleaned in cold
immersion type cleaner.
CAUTION: The solenoid rubber parts, plastic
parts, diaphragms and pump plungers, should not
be put in immersion type cleaner as they wills we//,
harden or distort. The bushing in the bowl will
withstand normal cleaning. R Ri n se thoroughly afier
cleaning.