Air Horn Removal; Air Horn Disassembly; Rochester Mv Carburetor - Pontiac Grand Prix Service Manual

ENGINE
FUEL
6B-7
INSTALL CABLE AS S H O W N
ENGINE BRACKET T O CARB. EXTENSION
SECTIONAL VIEW S H O W I N G
INSTALLATION O F CABLE T O BRACKET.
6 CYL. 1BBL. CARB, ENGINE.
ENGINE BRACKET
6 C Y L 4BBL CARB. ENGINE
CARB. EXTENSION 8 CYL. ENGINE
Fig.
68-12
Accelerator Linkage
-
Firebird
are included in the Overhaul and Adjustments proce- 2. To remove vacuum break diaphragm and plunger
d u e . rod, hold choke valve open. Then push upward on
diaphragm rod until the looped end of rod slides out
OVERHAUL AND ADJUSTMENTS
off of wire lever attached to choke valve. Then remove
AIR HORN REMOVAL (Fig. 6B- 13)
diaphragm plunger rod through hole in air horn.
1. Remove upper choke lever retaining screw at end of
choke shaft. Then remove choke lever from shaft.
2. Remove choke rod from fast idle cam by rotating
rod. Remove upper lever from other end of choke rod.
Note position of rod in relation to levers for ease in
reassembly.
3. Remove six air horn to float bowl attaching screws
(three long and three short screws).
4. Remove air horn by lifting straight up, invert and
place on clean bench. Air horn to bowl gasket can
remain on bowl for removal later.
AIR HORN DISASSEMBLY (Fig. 68-27)
1. Remove two vacuum break diaphragm cover screws.
Then carefully remove diaphragm cover retainer.
SRRK
V l Y U Y N B E
Fig. 68-13 Rochester MV Carburetor