Pontiac tempest 1968 Service Manual page 311

6 B - 4
1968 P O N T I A C SERVICE M A N U A L
Fig. 6 B - 5 A c c e l e r a t o r Linkage —Pontiac
ADJUSTMENTS ON C A I
A l l Rochester BV adjustments can be performed
on the car. With the exception of the idle speed and
mixture adjustment, a l l adjustments are included In
the Overhaul and Adjustments procedure.
IDLE SPEED AND MIXTURE ADJUSTMENT
With the engine at operating temperature, adjust
idle speed following the procedure at the end of
section 6 D .
O V E R H A U L A N D A D J U S T M E N T
DISASSEMBLY OF CHOKE
1. Disconnect choke vacuum break hose at dia­
phragm unit and from pipe i n throttle body.
2. Remove choke shaft lever screw (diaphragm
side). Remove two diaphragm bracket screws and
remove vacuum break diaphragm assembly.
3. Remove fast Idle cam attaching screw. Then
fast Idle cam and choke rod can be removed from
upper choke lever by carefully rotating assembly
upward and sliding end of rod out of upper choke
lever. The choke rod can now be removed from fast
Idle cam by rotating cam over end of rod.
4. To remove choke valve, remove stake on end of
choke valve screws. Then remove two choke valve
attaching screws from choke shaft and pull upward
on choke valve to remove from shaft. Choke shaft
and lever assembly can now be removed from a i r
horn.
Note position of choke t r i p lever i n relation to
upper choke lever tang for ease in reassembly.
DISASSEMBLY OF AIR HORN
1. Remove fuel f i l t e r inlet nut and gasket with 1"
wrench. Then remove filter, filter spring and gasket
between filter element and back side of inlet nut.
NOTE: Large open end of filter element always
faces fuel inlet nut.