Pontiac tempest 1968 Service Manual page 335

6B-28 1968 P O N T I A C S E R V I C E MANUAL
GAUGE FROM TOP OF
CASTING TO TOP OF
>LD RETAINER
FLOAT AT TOE.
\h.RMLY IN PLACE
/
J~,—1 .
PUSH FLOAT DOWN
LIGHTLY AGAINST
" NEEDLE
.BEND FLOAT UP OR
DOWN TO ADJUST
Fig. 6B-64 Float Level Adjustment
b. Remove float and bend up or down for ad­
justment as specified.
c. Visually
adjustment.
check float a l i g n m e n t after
13. Install power piston spring in power piston
well. If primary main metering rods were removed
from hanger reinstall making sure that tension
spring i s connected to top of each metering rod.
Install power piston assembly in well with metering
rods properly positioned in metering jets. Press
down firmly on power piston to insure the retainer
is properly positioned in the bore.
GAUGE FROM TOP OF CHOKE
VALVE WALL, N E X T TO V E N T
STACK, TO TOP OF PUMP S T E M
A S S P E C I F I E D .
OPEN PRIMARY T H R O T T L E
TO A POINT WHERE IDLE
VENT J U S T C L O S E S .
Fig. 6B-66 Idle Vent Adjustment
17. Install pump plunger in pump well.
AIR HORN ASSEMBLY (Fig. 6B-59)
1. Install the following, if removed:
a. Install pump lever and retain with roll pin.
b. Install choke shaft, choke valve, and two at­
taching screws.
14. Install plastic filler over float needle, pressing
downward until seated properly (Fig. 6B-60).
15. Install pump return spring in pump well.
16. Install air horn gasket around primary meter­
ing rods and piston. Position gasket over two dowels
on secondary side of bowl.
AIR HORN TO BOWL INSTALLATION
1. Place air horn on bowl carefully, positioning
vent tubes, and accelerating well tubes through air
horn gasket. Do not force air horn on to float bowl.
2. Install two long air horn screws, five short
screws and two counter-sunk screws in primary
GAUGE FROM TOP OF CHOKE
VALVE W A L L , NEXT TO VENT
STACK, TO TOP OF PUMP S T E M
AS SPECIFIED.
BEND PUMP L E V E R
TO ADJUST
THROTTLE VALVES
COMPLETELY
C L O S E D
ROD IN S P E C I F I E D
HOLE OF PUMP
L E V E R .
AIR VALVE
COMPLETELY CLOSED
BEND H E R E FOR SPECIFIED
C L E A R A N C E B E T W E E N ROD
AND END OF SLOT
Fig. 6B-65 Pump Adjustment
Fig. 6B-67 A i r V a l v e Dashpot Adjustment