Carters Carbs for Willys

1945 Willys Agri-Jeep

CARTER CARBURETOR CORPORATION, ST. LOUIS, MO., U. S. A. Page 3
Pump Arm and Collar Asiy Pin Spring
Fig. 4
Assemble parts in group "D"
28. Install pump jet and pump jet plug and gasket assembly.
29. Install discharge disk check assembly.
30. Install intake ball check assembly.
31. Install pump check strainer and strainer plug and gasket assembly.
32. Install pump spring.
33. Install pump plunger and rod assembly.
Assemble parts in group "B"
34. Install loose lever and retainer plate and throttle shaft and lever assembly, back out throttle lever adjusting screw, then install throttle valve and throttle valve screws (be sure trade-mark on valve is toward the idle port when viewed from manifold side of flange). With valve screws loose, tap throttle lightly to centralize it in bore of carbureter. Hold valve in place with fingers and securely tighten screws. (New screws are recommended.)
35. Install idle port rivet plug.
36. Install idle adjustment screw and idle adjustment screw spring.
37. Install insulator and new gaskets, then install body on flange, tightening screws evenly and securely.
38. Install idle well jet and idle well jet plug and gasket assembly.
39. Install low speed jet. Work jet well into seat by moving back and forth, then install low speed jet plug and gasket assembly.
Assemble parts in group "C"
40. Install metering rod jet and gasket assembly.
41. Install bowl cover as assembled, tightening screws down evenly and securely.
42. Install pump arm and collar and pump operating lever assembly and spring on pin in bowl cover.
43. Install pump connector link (ends away from bore and pin spring at top).
44. Install throttle shaft arm and screw assembly on throttle shaft.
45. Install throttle connector rod in throttle shaft arm, using spring and retainer at lower end and pin spring at top end.
46. Pump Adjustment: Back out throttle lever set screw. With throttle valve seated, pump plunger should travel 17/64" from closed to wide open throttle. Adjustment can be made by bending throttle connector rod at lower angle with tool TI09-41. Pump travel can be measured by using universal pump stroke gauge TI09-117S by placing base of gauge on raised portion of bowl cover so that projecting ear of pump gauge rests on top of pump shaft (See Fig. 6). Hold gauge vertical. The difference between the number shown by index mark on gauge, at wide open and closed throttle positions, should be 17.
47. Metering Rod Adjustments: (See Fig. 5.) Correct setting of metering rod is important and must be made after pump adjustment. Install metering pin and spring assembly, washer and nut
loosely on pump operating lever. Insert gauge (T109-26) in place of metering rod, seating tapered end in metering rod jet. With throttle valve seated, push metering rod pin downward until pin rests on shoulder of notch in gauge and tighten nut. Remove gauge, and install metering rod, disc and pin spring. Connect metering rod spring (end of spring through hole in metering rod).
48. After adjustment, metering rod should seat in metering rod jet when throttle is adjusted for normal curb idle. Metering rod spring must exert slight downward pressure on metering rod. Bend lower end of spring downward where necessary.
Fig. 5

49. Install nozzle and nozzle gasket, using tool No. T109-55. Be sure that flat side of nozzle faces up.
50. Install nozzle retainer plug and nozzle plug and gasket assembly.

Assemble parts in group "E"
51. Install air horn on body. .
52. Install choker shaft and lever assembly and choker pull back spring.
53. Install choker valve and screws, centralizing the valve in air horn before tightening screws.
54. Install choke operating lever assembly and hook pull back spring in place.
55. Install choker connector link, connector link spring and pin spring.
OTHER CARBURETER ADJUSTMENTS
If carbureter loads up after considerable service float level should be checked. Wear on lip of float lever will raise float level. Float level may be reset by bending lip of float lever down to raise float level or bending lever up to lower float level. Only a very slight bend is needed.
If motor stalls while idling, reset throttle adjusting screw and idle
adjustment screw to specifications. If these adjustments do not cor-
rect the trouble (I) Remove idle well plug and gasket assembly,
allowing gasoline from the bowl to flush out idle well jet. Remove low speed jet and blow out with corn. pressed air. (2) Remove idle well jet and clean thoroughly with compressed
air. Examine and see that jets seat
gasoline tight at shoulder. If not, re-place with new jets of identical specifications. (3) Clean carbon accumulation from bore of carbureter around throttle valve.
A clogged pump jet may be re-moved and cleaned with compressed air, which, in many cases, will remove the dirt or lint. However, it is usually advisable to replace the pump jet, as its cost is nominal. All jets and checks must be seated gasoline tight.
Poor acceleration may be due to damaged or worn plunger leather in accelerating pump, dirt in checks, corrosion or sediment in pump cylinder or bent throttle connector rod (parts
Fig. 6 which may be replaced at small cost).
Pump Operating Lever Ass'y Connector Link Pump Arm Spring
Bowl Cover Gasket
Pump Spring
Throttle Connector Rod Throttle Shaft Arm Clamp Sore
THE PUMP CIRCUIT
Metering Rod Spring
Throttle Connector Rod
Plug Gasket
Pump Passage Plug
Jet
rl Pump
) f Discharge Disk Check Asiy
Metering Rod
Munger end Rod Asiy Plunger Spring
IL
Metering Rod Gauge Metering Rod Pin
Pump Operating Lever Assy
Metering Rod Pin Hex Net
Metering Rod Pin Washer Throttle Connector Rod
Metering Rod Gauge Metering Rod Jet Metering Rod Jet Gasket
Metering Rod Jet and Gasket Ass 'y
GAUGING PUMP TRAVEL

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