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1940 Willys Overland Model 440
CARTER CARBURETOR CORPORATION, ST. LOUIS, MO., U.S.A. Page
3
Fig. 4
32. Install pump spring.
33. Install pump plunger and rod assembly. Assemble parts in group "B"
34. Install throttle shaft and lever assembly, back out throttle lever adjusting
screw then install throttle valve and throttle valve screw (be sure trade-mark
on valve is toward the idle port side of carbureter). With valve screws loose,
tap throttle valve lightly to centralize it in bore of carbureter. Hold valve
in place with fingers and securely tighten screws.
35. Install idle adjustment screw and idle adjustment screw spring.
36. Install idle port rivet plug.
37. Install tube clamp assembly, insulator and new gaskets, then install
body on flange, tightening screws evenly and securely.
38. Install low speed jet. Work jet well into seat by moving back and forth,
then install low speed jet plug and gasket assembly.
39. Install idle well jet and idle well 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 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 should travel 17/64" from closed to wide open position.
Adjustment can be made by bending throttle connector rod at lower angle with
tool T109-41. Pump travel can be measured by using universal pump stroke
gauge T109-I 17S by placing base of gauge on raised portion of bowl cover
so that projecting ear of pump gauge rests on top surface of pump shaft.
Hold gauge vertical. The difference between the number shown by index mark
on gauge, at wide open and closed positions, should be 17.
47. Metering Rod Adjustment: 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 (tool T109-26) in place of
metering rod, seating tapered end in metering rod jet. Hold gauge vertical
to insure seating. With throttle valve seated, push metering rod pin even
with shoulder of notch in gauge and tighten nut (tool T109-76). Remove gauge,
and install metering rod, disc and pin spring. Connect metering rod spring.
48. Install nozzle and nozzle gasket, using tool No. T109-55. Be sure that flat side of nozzle faces up.
49. Install nozzle retainer plug and nozzle plug and gasket assembly.
Assemble parts in group "E"
50. Instr3ll air horn on body.
51. Install choker shaft and lever assembly and choker pull back spring.
52. Install choker valve, choker valve screw, centralizing the valve in air
horn, then tighten valve screws.
53. Install choke operating lever assembly and hook pull back spring in place.
54. 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 correct the trouble
(I) Remove idle well plug and gasket assembly, allowing gasoline from the
bowl to flush out idle well jet. Remove idle well jet and blow out with compressed
air. (2) Remove low speed jet and cleart thoroughly with compressed air.
Examine and see that jet seats gasoline tight at shoulder. If not, replace
with a new jet of identical specifications. Never change a low speed jet
from one carbureter to another. (3) Examine bore of carbureter around throttle
valve for carbon accumulation.
A clogged pump jet should be removed 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, loose plunger, corrosion or sediment in pump cylinder or bent pump
arm (parts which may be replaced at small cost).
Fig. 5
Pump Arm and Collar Assy
Metering Rod Disk Pump Jet Passage Plug
Ball Check Strainer
Strainer Passage Plug and Gasket Ass'y
Pump Spring
Throttle Shaft Arm and Serew Ass'y
Spring Retainer
Throttle Connector Rod
Pump Arm Spring
Pump Operating Lever
Pump Plunger and Rod Ass'y Pump Jet
Discharge Disk Check Ass'y Intake Ball Check Ass'y
Air Horn Ass'y
Choke Operating Lever
Wire Clamp Screw
Choke Pull Back Spring Air Horn Attaching Scre
Tube Clamp Ass'y
Choker Link
Flange Attaching Scre Insulator
Idle Adjustment Scre
Idle Adjustment Screw Spring Throttle Adjustment Screw
Throttle Shaft and Lever Ass'y
Mt'