The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. Hold throttle valve wide open and close choke valve as far as possible without forcing. See figure 9F-2. The Carter WCFB and AFB designs fit easily beneath the low profile C1 and C2 hoods. Carter WCFB Carburetor Catalog Free WCFB Carburetor Manuals These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. As the accelerator is released and the primary throttle plates are closed to the idle position, the upward movement of the pump plunger and attached spring bracket exerts tension on the spring and tends to stabilize the float in a level position. 1955 Cadillac Idle Air Mixture Circuit WCFB Carburetor Cutting Out on Left Hand Turn Seat the intake check by tapping lightly in the hole to form a good seal. Carter WCFB Accelerator Pump Quick test to see if the accelerator pump is working. One is in the secondary venturi and the other just above the throttle plate. A stand pipe is provided at both needle seats as an additional trap for foreign material that might prevent the needle valves from seating properly. Carburetors equipped with an adjustable bowl vent require adjustment. Turn knurled nut of gauge until finger on gauge just touches top of plunger shaft (A). Is there a pointed check weight in the main discharge hole. Fast Idle or Idle at Cold Start has to be One of the More Important Adjustments on the Carburetor. Quick test to see if the accelerator pump is working. Rotate throttle stop screw E until engine idle at approx 500 RPM. I purchased from you a rebuild kit for Carter WCFB 4 barrel carb on my 1955 Chev. The Solid fuel is the later models BBDContents:00:00 intro00:34 air bled adjustments00:37 air bled float setting01:03 air bled fast idle type I01:25 air bled fast idle type II01:42 air bled fast idle type III01:58 air bled unloader02:24 air bled choke vacuum kick03:01 air bled automatic choke03:16 air bled pump04:08 air bled dashpot04:27 air bled idle speed \u0026 mixture04:58 air bled emission carburetors idle mixture06:00 air bled limiter cap06:36 solid fuel adjustments06:40 solid fuel float setting07:03 solid fuel metering rod07:27 solid fuel accelerator pump07:55 solid fuel bowl vent08:18 solid fuel fast idle cam08:43 solid fuel choke pull-off09:12 solid fuel automatic choke09:24 solid fuel egr dump valve09:46 solid fuel unloader10:08 solid fuel high altitude10:28 solid fuel idle speed \u0026 mixture12:11 solid fuel Limiter cap12:37 solid fuel fst idle12:51 solid fuel throttle positioner13:56 solid fuel vacuum throttle positioner14:31 solid fuel sol-vac15:04 solid fuel dashpot15:28 solid fuel transducer This allows air instead of fuel to be drawn off the pump jets. Other 4 barrel carburetors such as the Carter AVS, Carter TQ, Rochester 4GC, and Rochester Q-Jet have a tensioned secondary spring. The adjustment of the pump is important in order to get the required fuel. This is an electronic rebuild manual, no physical copy will be provided. Hold air horn upside down with floats in place and gasket removed. Rebuilding Carter BBD carburetor part 3 - Duration: 5:04. cm448: Ebook carburetor service manual - 341 pages, 272 MBytes, pdf format. Carter WCFB Build Sheets The Carter WCFB carburetors have a square-ish body with a rectangular air horn that protrudes above the air. Fig. Adjust idle screws D to produce a smooth idle of correct speed is obtained. BBS) and were basically an on/off condition similar to the function of a power valve. Place the choke housing toward the left and remove upper right main body to throttle body screw. With choke valve held closed and fast idle adjusting screw C, or fast idle adjusting tang, on high step of cam. It needs to go up and down easily.Is there aspringunder the power piston?Are the venturi cluster gaskets sitting flat and not curled over? Adjust by bending lip of float, not float arm. Other than that, great company to deal with. 60 pages of great info. How to clean the Jeep Carter BBD carb Idle jets - Duration: 7:14. The correct way is to use a fuel pump pressure gauge. Shorter and smaller overall than the 4GC Rochester, the WCFB was the right choice for dual-quads on a compact . When the engine gets hot and then is shut off, gas can sometimes overheat and then boil. They are not meant to fill the hole, only to restrict it. The high speed air bleed and the secondary bleed tube also acts as an anti-percolator. See figure 9F-2.A float lifter spring, which is connected to the lever arm of the primary float and to a bracket on the accelerator pump plunger, is incorporated to stabilize primary bowl fuel level and prevent float bounce upon sudden stops, or on rough roads (these springs are nowhere to be found). Holding the rods down and seated in the bottom (J), revolve metering rod arm until finger on arm contacts lip (K) of vacumeter link. Check to see that slots in air cleaner gasket line up with vent tubes and do not rotate gasket during installation of air cleaner. I. DISASSEMBLY. As the engine gains in RPM, the vacuum drops and the metering rods are pulled out of the main jet allowing more fuel to flow. This eliminates any bog or hesitation when acceleration. Once you get the piston out, clean, Carter WCFB Vacuum Piston the cylinder so that the piston move very free up and down. Test the fuel pump to be sure it isnt putting out too much pressure. This is percolation. The piston is brass and can be damaged very easily. Seat the discharge check by tapping lightly in the hole to form a good seal. Check any vents to make sure they are open. Press down on the vacummeter link (H) until the metering rods bottom in the carburetor body (J). When removing valves they should be marked so that they get put back the same way. It's highlighted yellow and will look something like this. To correct, remove carburetor and tighten throttle lever by either peening end of shaft over, or soldering end of shaft to throttle lever. Free shipping for many products! The Carter AFB uses weights, and therefore never goes out of adjustment. Find many great new & used options and get the best deals for 19571958 Plymouth Fury Carter WCFB Carburetor *Remanufactured at the best online prices at eBay! These manuals contain specifications, parts lists and instructions.The manuals can also be used to help identify those carburetors without tags. This check prevents excessive pressure in the discharge passage during acceleration. As the throttle is opened the pump moves down the pump well forcing the intake check closed and forcing fuel out the main discharge. Adjust by bending lip of float, not float arm. The ends of the connector rod should point to the throttle arm side. When closing the throttle, the accelerator moves up in the pump well. On 1956 models one point rich. If not then clean it and try again. On the WCFB the check ball is usually at the bottom of the pump well. All late model WCFB carburetors have three different length bowl cover screws. Also make sure one isnt rubbing on the side. If not, then find the check ball and make sure it is loose. This restricts the flow of fuel. Make sure manifold heat control valve is free. Refer to the Adjustment Data Table for adjustment dimensions. Make sure the ball rattles. What more could you ask for? In my repeated attempts to get the accelerator valve to pump, the car has run for several minutes combinedplenty of time to get the float bowl full. Master Technician Tool Set (early, circa 1935, for 1923~1935 Carter carburetors all makes - most tools then current) Carter Master Technician Tool Set about 1951. The metering rod adjustment should be done after the pump adjustment. Fig. Older kits 30-70s. Tyler's Forgotten Car Rescue 22,933 views. Your friend will receive an email from you with a link to our site. Metering rods for the WCFB have been out of production for several years now. Carter WCFB, 4 barrel metering rod adjustment instructions. You should feel some pressure and fluid should not be bypassing the check needle. b. Back off the idle screw so that the throttle plates close completely. cm448. This box did not have a part number. This is an electronic rebuild manual, no physical copy will be provided. Adjust by bending the choke connector rod at lower angle (H). Readjust idle to 500 RPM and fast idle to 1200 RPM On 1955 models set choke two points lean. Everyone Has Started an Engine in the . There should now be .018 .023 clearance between throttle valve and bore of carburetor (side opposite idle port). The download link will expire in 30 days. Be careful removing the intake check retainer. Add a couple drops of oil to the leather. Access our free Idle Speed and Mixture Repair Guide for Chevrolet Corvette 1963-1982 through AutoZone Rewards. The float lifter spring also provides better float and fuel level stability when operating on rough, washboard type roads. Place universal pump travel gauge T109-117S (if you happen to have one as they are not available) inverted on edge of dust cover boss of bowl cover. During high speed operation a vacuum exists at the pump jets. Both valves should be closed. Piston force is too much for linkage. With choke valve held tightly closed, take slack out of linkage and tighten clamp screw on choke lever. Measure from toe B to air horn. Coat threads of screw with sealing compound and install it. If hard starting still exists change the choke setting to one point lean. Rotate screw C, or bend tang, until throttle valves are open the distance listed in, With throttle valves held wide open, there should be a clearance between upper edge of choke valve and the inner wall of air horn (. Aspringis inserted in the power piston hole, then the piston. No metering rod gauges are necessary. Carter carburetors fitted with air bleed idle mixture adjustment also have fuel emulsion mixture needles, but these are sealed at the factory to limit the amount of fuel admitted during idle. One caveatits my impression that the float bowl is full because when I disconnect the fuel supply line from fuel pump (to card), it has pressure on the line. Probably not since only one butterfly is open. Run a blunt object around the inside of the leather cup to make sure any coating is broken. Be careful when removing the top of the carburetor that you don't force things and break the piston lever. Carter WCFB 4 Barrel Carburetor Float System. 1963-64 Studebaker Carter AFB 1962-1965 Chevrolet 327 and 409 engine carburetor manual 1958-1968 Lincoln carburetor manual AVS 1966 Chevrolet 327 and Marine Carter AVS carburetors BB Ball and Ball Single Barrel downdraft manual: 1939-60 Chrysler, Dodge, Plymouth Carter BB, BB1, BB1A and BB1D updraft Carter BB for IHC BBD Watch this. Adjust by bending the connector rod at the lower bend (E). Rochester and Carter replacement parts are interchangeable. Anti-Rust "Dichromate" Finish**4. With choke valve tightly closed, tighten fast idle adjusting screw (K) (on high step of cam) until there is the clearance as listed on carburetor specification page between throttle valve and bore of carburetor, side opposite idle port. (note) The metering rods will fit into the jets loosely. The main body is partitioned into two compartments (primary and secondary), each containing a double pontoon float and lever assembly and a needle valve and seat. Each size must be used in its own location. Carter used metering rods with a single step, 2-step, 3-step, and 4-step. Also check for overheating of the engine, fuel lines too close to the manifold, or too much heat in the engine department. Founded by William Carter in 1909, the Carter Carburetor Company produced units such as the AVS, AFB and 385-CFM WCFB for dozens of years. Rotate throttle stop screw E until engine idle at approx 500 RPM. Make sure these are clear if you have percolation problems. Carter WGD Adjustments Float Level With bowl cover assembly inverted and float resting on pin in seated needle, and with gasket removed, the distance from the bowl cover to the top of float should be 7/64. Do not depress float lip against spring in needle, but let float rest of its own weight. The lower edge of vent valve cap should be raised above surface of dust cover the distance listed in the. Check throttle linkage to make sure that primary throttle valves come to full wide open position. Ethanol leaves deposits behind that acts like corrosion. 1: Carter WCFB idle mixture and speed adustment screw location. With rods held in this position, revolve metering rod arm (F) until lip contacts vacumeter link. Ultra-Sonic Cleaning3. Fuel enters the primary side of the carburetor through a strainer screen at the fuel inlet and is directed to the primary needle valve and seat. All These Part Numbers Interchange Into Our Part No. To correct, remove carburetor and turn it upside down. With the thermostatic coil housing gasket and baffle plate removed, crack throttle valve and hold choke valve closed. I have taken this carb a part and rechecked floats adjustments and blown out passages with compressed air thank you. This spring is a bit complicated so this video will be very helpful when you change your spring.Find this WCFB spring here: https://www.carburetor-parts.com/wcfb-66d400.htmlFind WCFB parts here:https://www.carburetor-parts.com/wcfb-partscontents:00:0000:42 removing fast idle cam assembly00:56 taking the assembly apart piece by piece01:07 removing the old spring01:22 installing spring02:15 which direction does the pieces go?02:38 assembling the pieces03:16 installing the cam assembly onto the carburetor . The adjustment of the pump is important in order to get the required fuel. Can you help me out? 19591961 Chevrolet Carter WCFB Carburetor All These Part Numbers Interchange Into Our Part No. Readjust dashpot plunger to move 1/16 inch on closing of throttle valves.
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