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ROCHESTER CARBURETORS Bulletin 9D-8 August, 1951 |
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Bulletin 9D-8 August, 1951 Model
"BC" Page 10 |
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ROCHESTER PRODUCTS. DIVISION OF GENERAL MOTORS, ROCHESTER, NEW
YORK |
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BOWL DISASSEMBLY
1. Remove slotted brass pump discharge
guide by using a small bit
screwdriver to compress top
portions of guide slightly as shown in Figure 8. Spring will cause guide
to pop out. Remove pump
discharge guide spring and
ball. If guide is of the stamped type, remove with long nosed
plyers.
2. Remove two pin springs
from pump link and remove
pump link from throttle lever and pump plunger arm.
3. Remove pump plunger from bowl.
Remove pump return spring
and inlet ball from pump
well.
4. Carefully remove pump inlet screen from
bowl.
NOTE: Do not remove choke suction
tube from throttle body.
5. Up end carburetor bowl with suction tube
projected over edge of flat
surface and remove two
throttle body attaching screws.
Throttle body and gasket may now be
removed. |
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Figure 8. Bowl
Assembly |
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THROTTLE BODY DISASSEMBLY
1. Remove idle adjusting needle and
spring.
2. Remove idle screw from throttle
lever.
3. Remove fast idle cam.
NOTE: Due to close-tolerance fit
of the throttle valve in the bore of the throttle body, it is not
necessary to remove the throttle valve or shaft from the throttle
body.
CLEANING AND INSPECTION
1. Thoroughly clean carburetor castings and
metal parts in carburetor cleaning solvent.
CAUTION: Choke coil and housing
and pump plunger should not be immersed in solvent. Clean pump plunger in
clean gasoline only.
2. Blow all passages in castings dry with
compressed air and blow off all parts until they are
dry.
CAUTION: Do not pass drills or
wires through calibrated jets or passages as this may enlarge orifice and
seriously affect carburetor calibration. |
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