GMC 1976 ZEO 6083 Maintenance Manual page 358

6M- 16
ENGINE FUEL SYSTEM
Figure 14-Float Bowl Assembly
FLOAT BOWL DISASSEMBLY
1 . Remove pump plunger from pump well . See
Figure 14 .
2. Remove air horn gasket from float bowl .
3. Remove pump return spring from pump well .
4. Remove plastic filler over float valve .
5 . Remove power piston and primary metering
rods by depressing piston stem and allowing it to
snap free . Remove power piston spring from well .
NOTE : Piston may require several snaps to come
free .
6. Remove metering rods from power piston by
disconnecting tension spring from top of each rod
then rotating rod to remove from hanger as shown
in Figure 15 .
7. Remove float assembly and float needle by
pulling up on retaining pin. Remove float needle seat
and gasket (figure 16).
TENSION
SPRING
RETAINER
PRIMARY .1106+", -APLASTICI
METER ING
POWER PISTON
PRIMARY
METER ING
ROD
A-1701~
Figure 15-Power Piston and Metering Rod
Figure 16-Float Assembly
8. Remove primary metering jets . No attempt
should be made to remove secondary metering plates
(figure 18).
9. Remove pump discharge check ball retainer
and check ball .
10 . Remove baffle from secondary side of bowl .
CAUTION: Do not place vacuum break as-
sembly in carburetor cleaner. Remove
choke assembly. If further disassembly is
necessary, spread the retaining ears on
bracket next to vacuum break assembly,
then remove vacuum break from bracket.
CHOKE DISASSEMBLY
1 . Remove three retaining screws and retainers
from choke cover and coil assembly . Then pull
straight outward and remove cover and coil assem-
bly from choke housing. See Figure 18 .
Figure 17-Primary Metering Jets