Bulletin 9D-6
August, 1951
Model "B"
Page
8
ROCHESTER PRODUCTS DIVISION, GENERAL MOTORS CORP., ROCHESTER,
NEW YORK
DISASSEMBLY INSTRUCTIONS FOR
MODEL "B" CARBURETOR
1. Remove 4 cover attaching screws and choke
bracket.
2. Lift Cover straight up to prevent damage to
floats. Hold Throttle Kick Lever while lifting cover.
COVER DISASSEMBLY
1. Place cover up-ended on flat surface and
remove float hinge pin and floats.
2. Lift air horn gasket from cover and remove
Float. Needle, Seat and red fiber gasket, using screw driver of proper
width.
3. Remove Main Metering Jet and Power Valve
Assembly from Main Well Support. Use care so as not to lose small spring and ball of
Power Valve Assembly
4. Remove Main Well Support by loosening
attaching screw.
5. Remove Main Well Support Gasket and lift
Power Stem and Spring from Cover.
6. Remove Choke Valve Screws and Choke
Valve.
7. Unhook Choke Spring and remove choke shaft
assembly.
8. With small pointed instrument remove choke
retaining ring. Choke swivel assembly and spring may now be
removed.
Cover is now ready to be cleaned
in carburetor solvent and dried with compressed air. It is not necessary
to remove passage plugs. Blow out all passages with compressed air prior
to assembly.
Note: All Main Metering Jets for
Rochester GM Carburetors are calibrated by fuel-flow, rather than drill
size, at the Factory. Clean with solvent and compressed air
only.
BOWL DISASSEMBLY
1. Remove Throttle Kick Lever and Spring by
loosening screw and washer.
2. Holding Pump Plunger full down, remove Pin
Springs and Pump Link from Throttle Lever and Pump Rod. Pump Plunger may now be
lifted from Howl.
3. Lift Pump Spring from Pump Well and remove
ball check in bottom of well.
'4. Tap lightly, with small
screwdriver, outer edge of Pump Discharge Guide to compress lips, rotate
slightly to remove. Bronze Spring and Large ball check will fall from Bowl
when up-ended.
5. Remove Pump Screen and Retainer from
Bowl.
6. With Bowl up-ended, remove Throttle Body
attaching screws.
Bowl may now be cleaned in same
manner as air cover. By holding a flashlight to passage holes, it can
readily be determined if they are clean.
|
