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Home >> Oldsmobile >> 1990 >> Toronado Base, 4T60/ME9 >> Repair and Diagnosis >> Engine Performance >> Remove, Overhaul & Install >> Engine Controls - Remove/Install/Overhaul >> Overhaul (Carburetor) >> Disassembly Float Bowl

Disassembly Float Bowl

  1. Remove air horn-to-float bowl gasket. Remove mixture control solenoid plunger. Remove accelerator pump assembly. Remove spring and cup from accelerator pump.
  2. Remove TPS and spring. Remove mixture control solenoid-to-air horn gasket. Remove solenoid connector retaining screws. Using Mixture Control Adjuster (J-28696-10 or BT-7928), remove solenoid mixture adjusting screw and rich limit stop.
  3. Remove solenoid plunger. Remove primary metering rods and springs. Remove float bowl insert. Remove mixture control solenoid assembly. DO NOT  remove plunger return spring or connector wires from solenoid.
  4. Remove aneroid cavity insert. Remove solenoid return spring and adjusting screw spring. Remove float, needle and hinge pin.
  5. Using Needle Seat Remover/Installer (J-22769), remove needle seat and gasket. Using Metering Jet Remover (J-28696-4 or BT-7928), remove primary jets.
    CAUTION: DO NOT  remove secondary jets. Secondary jets are pressed into float bowl. If jets are damaged, float bowl must be replaced.
  6. Remove discharge plug retainer, discharge ball and pump well baffle. Drill out choke cover retaining rivet heads. Remove choke cover retainers. Remove choke cover, thermostat assembly and gasket. Remove choke housing-to-float bowl retaining screw and washer.
  7. Remove choke housing. Remove choke housing-to-float bowl seal. Remove secondary throttle lock-out lever. Remove intermediate choke lever. Invert float bowl. Remove intermediate choke shaft seal.
  8. Remove internal choke thermostat lever retaining screw. Remove choke thermostat lever, intermediate choke shaft, lever and link assembly and fast idle cam. Separate fast idle cam from shaft. Remove intermediate choke shaft seal.
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