ROCHESTER CARBURETORS

Bulletin 9D-9 January 1952

Page 18
ROCHESTER PRODUCTS, DIVISION OF GENERAL MOTORS, ROCHESTER, NEW YORK
AIR HORN ASSEMBLY (Continued)
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PRIMARY FLOAT ASSEMBLY
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FLOAT TANG BACK OF BALANCE SPRING
7.
Figure 7-27
Assemble float needle to float assembly. Then in­stall float needle and hinge pin on pump side of carburetor. (Figure 1-21.)
Install float balance spring and clips on fuel inlet side of carburetor.
Install fiber gasket and needle seat on fuel inlet side of carburetor. (Figure 7-26.(
Assemble float needle to float assembly. Then in­stall float, needle, and hinge pin on fuel inlet side of carburetor. (Figure 7-28.)
NOTE: The float level and tension adjustments should be made at this point. See adjustment bul­letin for proper setting.
Install air horn assembly on float bowl, being care­ful to guide pump plunger in well and not to bend float assemblies. Align air horn and gasket to screw holes in float bowl.
First tighten the three inner attaching screws and lock washers evenly and securely. Then lighten the remaining ten air horn attaching screws and lock washers.
Assemble inside pump lever to pump plunger rod and install cotter pin.
Assemble choke housing gasket to air horn. Then install choke housing to air horn with two attach­ing screws and lock washers.
Assemble choke piston and piston pin to choke shaft lever, and link assembly. Install choke shaft assembly, through choke housing into the air horn. (Figure 7-29.) Rotate choke shaft clockwise to assemble piston into choke housing sleeve.
Figure 7-28
15.   Slide choke valve through choke shaft so that letters "RP" are facing up when valve is closed.

16.   Start, but do not tighten two choke valve attach­ing screws.

 

17. Install the choke lever and collar assembly choke rod. and fast idle cam and retaining screw (as an assembly) to the choke shaft on one end. and throttle body on the other.

10.
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CHOKE SHAFT
11.
14.
Figure 7-29

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