Contents: Float Chamber Cover Parts (2.6L) ⤓ Carburetor Diffuser and Throttle…⤓ Disassembling the carburetor ⤓ Assembly ⤓
Float Chamber Cover Parts (2.6L)
13. Axis; 14. Float; 15. Needle valve; 16. Saddle; 17, 21, 22, 25, 26. Ring; 18, 29, 40. Gasket; 19, 23. Holder; 20. FBSV valve; 24. SCSV valve; 27. Overlay; 28. Bimetallic element; 30. Connector; 31, 41, 48. Cover; 32, 37, 43, 46, 50. Aperture; 33. Thrust washer; 34, 36, 42, 45, 49. Spring; 35, 44, 51. Body; 38. Valve; 39. Mixture control valve; 47. Bracket; 52. Primary chamber main air jet; 53. Primary chamber atomizer; 54. Secondary chamber atomizer; 55. Float chamber cover
Carburetor Diffuser and Throttle Body Parts (2.6L)
56, 58, 61, 72. Ball; 57. Counterweight; 59, 93. Plug; 60. Ring; 62. Screw; 63, 77. Gasket; 64. Primary chamber main fuel jet; 65. Secondary chamber main fuel jet; 66. Lid; 67, 71, 75, 90. Spring; 68, 74. Diaphragm; 69. Economizer valve; 70. Economizer; 73. Accelerator pump cover; 76. Pump body; 78. Diffuser housing; 79. Hose; 80. Vacuum chamber; 81. Throttle position sensor; 82. Lever; 83. Adjusting screw; 84. Throttle actuator lever; 85. Cam; 86. Fast idle speed adjustment screw; 87, 88, 91. Lever; 89. Idle speed adjustment screw (SAS2); 92. Idle speed adjustment screw (SAS1); 94. Mixture quality adjustment screw; 95. Damper body
Disassembling the carburetor
Removal the connector pins from the housing
1, 6. FBSV valve terminals; 2. Connector; 3. Limiter; 4. Screwdriver; 5. Conclusions
1. Remove the carburetor.
2. Remove the throttle springs.
3. Remove the coolant hose and throttle springs.
4. Remove the air shock absorber - picture on the left (for cars with manual transmission) or solenoid valve (on a car with automatic transmission), having unhooked the rod.
5. On a car with an automatic transmission, unscrew the screws, remove the idle speed corrector drive and move it to the side (it is prohibited to check the corrector with battery voltage).
6. Remove the connector bracket.
7. Disconnect the air damper vacuum hose.
8. Unscrew the 5 screws and remove the float chamber cover by slightly prying it off.
9. Remove the float, take out the needle valve and unscrew the seat.
10. Using a miniature screwdriver, disconnect the terminals of the electromagnetic feedback valve (FBSV valves).
11. Remove the cover, unscrew the screw (1) and remove the FBSV valve (2 – terminals).
12. Remove the holder and take out the electromagnetic shut-off valve (SCSV valve), without disconnecting the wires.
13. Using a miniature screwdriver, disconnect the wire terminals from the SCSV valve and remove it.
14. Remove the rivet heads and remove the air damper release cover. Remove the small screw at the bottom of the cover.
15. Remove the gasket, bimetallic element and plate.
16. Carefully remove the remaining rivets.
17. Disconnect the bimetallic element terminal from the connector.
18. Remove the ventilation valve, paying attention to the location of the small valve springs.
19. Remove the air damper drive cover (the arrows indicate the air damper mounting screws).
20. Remove the counterweight and ball valve of the shut-off valve.
21. Disconnect the accelerator pump rod from the throttle lever.
22. Carefully remove the screw from the throttle body. Unscrew the main jet.
23. Loosen the screws and remove the accelerator pump parts from the housing.
24. Unscrew the 3 screws on the economizer cover and remove the cover, spring and diaphragm.
25. Disconnect the vacuum hose of the vacuum chamber, disconnect the rod, unscrew the bolts and remove the chamber.
26. Remove the throttle position sensor (indicated by the arrow).
27. Flush the carburetor channels with solvent and blow out with compressed air.
28. Check the condition of the diaphragms, float and needle valve, freedom of movement of the rods, rods and levers. Check the operation of the solenoid valves and the resistance of their windings (FBSV valve – 48–60 Ohm, SCSV valve – 54–66 Ohm, bimetallic element – 6 Ohm at 20°C).
29. Check the air shock absorber by pulling on the rod – you should feel resistance, and when you release it, the rod quickly returns back.
30. Press the vacuum chamber rod and release it, closing the air extraction hole with your finger – the rod should remain motionless.
Assembly
Checking the opening of the air damper at fully open throttle
1. Air damper; 2. Gap; 3. Adjustment lever
1. Install the damper rotation sensor, vacuum chamber, assemble and install the economizer, accelerator pump. Install the shut-off valve, air damper actuator switch cover, and vent valve. Tighten the main jets.
2. Assemble the bimetallic element connector. Install the element in reverse order, replacing the gasket and aligning the marks. Secure the lid with rivets; it is not recommended to use screws.
3. Assemble the FBSV and SCSV valve connectors. Install the valves and assemble the damper body and diffuser body by replacing the seal and screwing in the screw.
4. Install all parts on the float chamber cover. Adjust the position of the float.
5. Install the float chamber cover, secure with 5 screws. Install the connector bracket, air shock absorber (or pneumatic valve), all springs, levers and rods. Check the smooth movement of the rods.
6. Check the clearance between the throttle valve and the diffuser wall by inserting a drill and moving the idle cam to the extreme upper position. The gap should be 0.63 mm on a 2.0 L engine (with manual transmission), 0.71 mm on 2.0 L engines (with automatic transmission), 0.71 mm on 2.6 L engines (with manual transmission), 0.80 mm on 2.6 L engines (with automatic transmission).
7. Check the clearance between the air damper and the chamber wall with the throttle valve fully open. To do this, close the air damper with your finger and open the throttle valve with the lever. The gap should be 2 mm. If necessary, adjust by bending the lever.
Attention! This gap should not change after disassembly and assembly and is usually only checked. Incorrect clearance adjustment greatly worsens the driving performance of the car when the engine is not warmed up.
8. Replace the gasket and install the carburetor (see subsection 8.1.2.1).