From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Service replacement parts list and tune-up data for a Stromberg AAV-26 Carburetor.
| Identifier | ExFiles\Box 122\3\ scan0211 | |
| Date | 2nd August 1939 | |
| STROMBERG CARBURETOR STROMBERG AAV-26 CARBURETOR STROMBERG NO. A-19182 (CODE NO. 7-33) BUICK SYMBOL NO. 1315323 H.D.A.C. STROMBERG NO. A-19182 (CODE NO. 7-34) BUICK SYMBOL NO. 1315323 SIZE: 1-1/4" DUAL D.{John DeLooze - Company Secretary} D.{John DeLooze - Company Secretary} 4-HOLE FLANGE 1940 BUICK MODELS 60, 70, 80, 90 3-7/16" x 4-5/16"—8 cyl. PARTS ILLUSTRATED 1. Choke Valve 2. Power Piston Vac. Passage 3. Main Discharge Jet 4. High Speed Bleeder 5. Idle Air Bleeder 6. Idle Tube 7. Vacuum Power Piston 8. Pump Discharge Nozzle 9. Power By-Pass Jet 10. Main Disch. Jet Plug 11. Main Metering Jet 12. Main Dis. Jet Lead Gasket 13. Idle Fuel Res. Bleeder 14. Idle Needle Valve 15. Idle Dis. Hole 16. Vac. Spark Conn. 17. Throttle Valve 18. Primary Venturi 19. Auxiliary Venturi 20. Float 21. Float Lever 22. Float Needle Valve Clip 23. Float Fulcrum Pin 24. Float Needle Valve 25. Float Needle Valve Seat 26. Float Hanger Gaskets 27. Float Hanger 28. Gasoline Inlet 29. Gasoline Strainer 30. Bowl Chamber Vent 31. Pump Piston Link 32. Bowl Dust Washer 33. Retainer Washer 34. Dust Washer Spring 35. Spring Retainer Washer 36. Pump Duration Spring 37. Pump Piston 38. Piston Expansion Spring 39. Pump Relief Valve 40. Pump Inlet Check Valve 41. Pump Inlet Strainer 42. Pump Outlet Check Valve 43. Pump Discharge Nozzles 44. Fast Idle Rod 45. Choke Trip Screw 46. Auto. Choke Vac. Passage 47. Thermostat 48. Screen 49. Hot Air Tube Conn. 50. Thro. Stop Screw 51. Pump Rod 52. Fuel Level Sight Plug 53. Fast Idle Rod SERVICE REPLACEMENT PARTS LIST Bin No-Key No. | Part No. | Part Name 1 | P-22859 | Float Needle Valve, Clip & Seat .101” ...(NOT VAR.) 2 | J-8655-G | Complete Gasket Set *4 | P-24736 | Pump Piston, Link and Spring (Complete) *5 | P-24743 | Gasket—Pump Duration 6 | P-18149 | Pump Inlet Check Valve 7 | P-21197 | Gasket—Power By-Pass Jet No. 54...(NOT VAR.) 8 | P-19448 | Gasket—By-Pass Jet 9 | P-23985 | Vacuum Power Piston 10 | P-18478 | Idle Needle Valve *11 | P-19410 | Spring—Idle Needle Valve *12 | P-24673 | Metering Jet .052"...(VAR.) P-24872 | Metering Jet .051" Heavy Duty Air Cleaner.....(VAR.) P-19090 | Main Metering Jet No. 32-28...(NOT VAR.) *13 | P-24780 | Float with Lever *14 | P-23395 | Gasket—Float Needle Valve Seat *16 | P-24728 | Cotter Pin—Idle Rod 17 | P-24737 | Gasket—Main Body 18 | P-24735 | Venturi Set 19 | P-23802 | Plug—Main Discharge Jet 20 | 80-S-4 | Lockwasher—Main Body Attach. Screw 21 | P-24729 | Idle Ball 22 | P-18974 | Fulcrum Pin—Float Lever 23 | P-23918 | Screw—Air Horn Attaching 25 | P-6868 | Lockwasher—Air Horn Attaching Screw 26 | P-226 | Screw—Main Body Attaching 27 | P-19103 | Screw—Throttle Stop 28 | P-18841 | Spring—Throttle Stop Screw *30 | P-24740 | Throttle Valve (2P)...(NOT VAR.) 32 | P-24878 | Washer—Throttle Valve Attaching *34 | P-24749 | Plug—Check Valve *35 | P-21032 | Strainer—Fuel 36 | P-17080 | Washer—Splash—Pump Link 37 | P-24849 | Spring—Packing Retainer 38 | P-23913 | Washer—Valve 39 | P-22046 | Washer—Spring Retainer 40 | P-3641 | Screw—Choke Valve Attach. 41 | P-23913 | Choke Valve 42 | P-24768 | Assy—Main Body & Lever 43 | P-24713 | Assy—Air Horn *44 | P-24767 | Assy—Main Body 1-1/8” Venturi, No. 70 H.S. Bleeder, No. 54-60 Idle Nozzles...(VAR.) *45 | P-24768 | Assy—Throttle Body No. 54-60 Idle Disch. Hole, No. 38 HS{Lord Ernest Hives - Chair} Bleeder...(VAR.) *46 | P-24677 | Pump Rod 47 | P-12620 | Lever—Pump Rod 48 | P-3617 | Spring—Pump Rod 49 | P-19820 | Spring—Washer—Pump Lever Fulcrum Screw 50 | P-22641 | Vacuum Passage Screw 51 | P-23888 | Strainer—Check Valve 52 | P-24683 | Idle Air Bleeder 53 | P-3787 | Cotter Pin—Pump Rod and Pump Link 54 | P-22441 | Float Hanger 55 | P-23985 | High Speed Bleeder No. 70...(NOT VAR.) 56 | P-6006 | Plug—Float Level Sight 57 | P-23911 | Elbow—Gas Connection 58 | P-24741 | Strainer—Gasoline 59 | P-12469 | Gasket—Pump Disch. Nozzle Attach. *60 | P-17084 | Gasket—Pump Disch. Nozzle Attach. Screw 61 | P-24894 | Nozzle—Pump Discharge No. 88...(VAR.) 62 | P-24669 | Gasket—Pump Discharge Nozzle 63 | P-22802 | Lead Gasket—Main Disch. Jet 64 | P-23746 | Expansion Plug—Idle Hole 65 | P-22303 | Washer—High Speed Bleeder Channel *66 | P-24662 | Lever—Start Air Loose Lever Lock *67 | P-24685 | Spring—Start Aid Loose Lever Lock Spacer *68 | P-24685 | Fast Idle Cam *69 | P-23938 | Spring—Fast Idle Cam 70 | P-24728 | Fast Idle Rod 71(2-R) | P-112-R3 | Cotter Pin—Fast Idle Rod *72 | P-21033 | Snap Ring—Fast Idle *73 | P-23974 | Snap Ring—Fast Idle *74 | P-24664 | Spring—Start Air Loose Lever 76 | P-23978 | Screw—Manual Control Wire Clamp P-2226 | Screw—Main Cont. Lever & Tube Holder P-226 | Screw—Man. Cont. Tube Clamp P-12676 | Washer—Man. Cont. Tube Clamp Screw P-2290 | Nut—Man. Cont. Tube Clamp *78 | P-24688 | Washer—Starting Switch Rotor—Front *79 | P-2230 | Gasket—Starting Switch Cover *80 | P-24691 | Gasket—Starting Switch Housing 80-S-4 | Lockwasher—Starting Switch Housing Attach. Screw 81-S-4S | Screw—Starting Switch Housing Attach. Screw *82 | P-24691 | Housing—Starting Switch *84 | P-24691 | Cover—Starting Switch *85 | P-24692 | Rotor—Starting Switch *86 | P-24712 | Washer—Starting Switch Rotor 87 | P-2731 | Lockwasher—Starting Switch Rotor Att. Nut 88 | P-2895 | Nut—Starting Switch Rotor Attach. 89 | 40-S-18 | Lockwasher—Starting Switch Cover Attach. 90 | 61-S-24 | Screw—Starting Switch Cover Attach. *91 | P-13095 | Spring—Lift 92 | P-3641 | Screw—Main Body Attach. (Long) 93 | P-24328 | Cover—Auto Choke Housing *94 | P-23297 | Gasket—Auto Choke Housing Attach. 95 | P-23918 | Screw—Auto Choke Housing Attach. 96 | P-24898 | Vacuum Piston with Pin and Lever 97 | P-23933 | Washer—Thermostat Lever Adj. 98 | P-23932 | Lockwasher—Vac. Piston and Link Attach. Nut 99 | P-16571 | Nut—Vacuum Piston and Link Attach. 100 | P-23297 | Lockwasher—Thermostat Cover Attach. Screw 101 | P-23832 | Washer—Thermostat Cover Attach. 102 | P-22533 | Screw—Thermostat Cover Attach. Screw 103 | P-23297 | Washer—Thermostat Lever 104 | P-23883 | Clip—Float Needle Valve 105 | P-23928 | Pump Reducer No. 38...(NOT VAR.) *Indicates New Part. Note—Specifications below are for latest production; previous major changes listed on parts page. FUEL LEVEL—Measure 19/32" below top surface of float chamber (without gasket) or level with bottom of level sight hole at 4 to 5 lbs. pressure. To correct fuel level, hold air horn in inverted position. Place Tool T-24971 on gasket. Tops of floats should be 3/64" above tops of vertical guides, which will give approximate fuel level; change if necessary. Sides of floats should be tangent to tool without drag. MAIN METERING SYSTEM—Venturi 1-1/8"; Main Discharge Jet No. 32-28 P-24670 (Tool T-24967); High Speed Bleeder No. 70 P-23985. Main Metering Jet .052" P-24673 (New Part No.); (.051" used with heavy-duty air cleaner (Tool T-24924)); Use Tool T-19099 Screwdriver for removing main jet plug. Main metering system controls the flow of fuel up to approximately 65 to 70 M.P.H. POWER SYSTEM—Power By-Pass Jet No. 54 P-21197; jet to come into operation at 4" to 6" of manifold vacuum, which is approximately 65 to 70 M.P.H. (Tool T-24733) used to remove vacuum power piston. ACCELERATION—Pump Discharge Nozzles No. 68 P-24894; Pump capacity 10 to 14 c.c. per 10 fast strokes, and 15 to 19 c.c. per 10 slow strokes with pump rod link set in middle setting. (Tool T-24972) Pump action takes place during acceleration period only. IDLE SYSTEM—Idle Discharge holes Nos. 54-60. With throttle valve fully closed and No. 60 drill in idle hole, edge of valve is located .022" +-.004" from No. 60 drill; Idle Air Bleed No. 42 P-24683 in throttle body, No. 70 in main body; Idle Tube No. 70 P-19424. Adjustment: Adjust to smooth running one barrel at a time. OUT to make richer and IN to make leaner; throttle at 7 to 8 M.P.H. VACUUM SPARK CONTROL—With throttle fully closed and no. 58 drill in spark hole, edge of valve is located .055" +-.004" from No. 58 drill. FLANGE GASKET—P-18165. SPECIAL TOOLS REQUIRED—Use Buick complete Tool Kit SER-373 T-24733. Power piston wrench T-24967 Main Discharge Jet Remover; T-24924 Main Metering Jet Wrench; T-24970 By-Pass Jet and Check Valve Tester; T-24972 Pump Capacity Burette Gauge; T-24968 Handle. T-19099 Main Jet Plug Screwdriver; T-24971 Float Gauge; T-25047 Socket Wrench; T-25057 Auto-Choke Step Gauge; T-25046 Vac. Piston Setting Gauge. MOTOR TUNE-UP DATA SPARK PLUG—.025" to .028". Clean and adjust at regular intervals. DISTRIBUTOR—.015". Breaker gap set .015". Replace if necessary. VALVES—Intake: .015". Exhaust: .015". Engine hot. IGNITION TIMING—Breaker contacts to open for No. 1 cylinder when flywheel mark is opposite index line on housing. SERVICE RECOMMENDATION—Check heat control valve to see that it is free during its entire travel and that thermostat is properly positioned. BENDIX PRODUCTS DIVISION OF BENDIX AVIATION CORPORATION SOUTH BEND INDIANA Printed in U. S. A.{Mr Adams} Page 4—Form 10C-636 8-2-39—Form 10C-636—Page 1 | ||