RCB 9D-8 Model "BC"


	ROCHESTER CARBURETORS Bulletin 9D-8 August, 1951
	Bulletin 9D-8 August, 1951 Model "BC" Page 9

	ROCHESTER PRODUCTS, DIVISION OF GENERAL MOTORS, ROCHESTER, NEW YORK CARBURETOR DISASSEMBLY, INSPECTION, AND ADJUSTMENT CHOKE DISASSEMBLY 1. Loosen 1/2" brass fitting on choke suction tube. 2. Remove three attaching choke cover screws and retainers, then remove choke cover, cover gasket and thermostat coil assembly from carburetor. 3. Remove baffle plate. 4. Remove pin spring and rod end clip from respective ends of choke rod and remove rod. 5. Remove retaining screw at end of choke shaft and carefully pry off choke trip lever, spacing washer and choke counterweight. 6. Remove two choke valve screws and then remove choke valve. 7. Rotate choke shaft clockwise to free choke piston from housing and then remove piston and choke shaft from carburetor. 8. Remove choke piston pin and piston from choke shaft. 9. Remove two choke housing attaching screws. Choke housing and gasket may now be removed from air horn.

	AIR HORN DISASSEMBLY 1. Remove filter screen retainer nut and gasket with 3/4" wrench and remove filter screen. NOTE: Some applications do not use a filter screen. 2. Remove screws and lift air horn from bowl. 3. Place air horn upended on flat surface. Remove float hinge pin and lift float assembly from air horn. Float needle may now be removed from float. 4. Remove float seat and gasket with 1/2" bit screwdriver. 5. Remove main metering jet from main well support. 6. Remove main well support. Air horn gasket may now be removed. 7. Remove power piston and spring. NOTE: Do not remove primary idle tube from air horn.