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Motor Tune-Up—Be Accurate! Always Use Feeler Gauges!
Caution: Change worn or leaky flange gaskets. Tighten manifold bolts and
test compression before adjusting carbureter.
Use-Timing Light
Breaker Points to Open
8 Cyl.—T.D.C.
6 Cyl.—i/2" B.T.D.C.
VALVE CLEARANCE
Set Valves Intake .006" Exhaust .008"
1
Correct Float Level
( Remove Cork Gasket)
1/8 Inch
Form 6459B—Canadian
CARTER CARBURETOR CORPORATION, ST. LOUIS, MO., U. S. A.HUDSON 50IS-5025
November, 1940
Reprinted April, 1944
CAR AND MOTOR NUMBERS
1941—5015—"11-12-13"—2150 and higher
1942—5015— "21"—2.11324 and higher "22"—221322
and higher
1941—5025—"14-15-17"—7293 and higher
124"—241318 and higher
1942—5025— "25"—255755 and higher
1"27"—271319 and higher
Note: 5015 used on Model 10,
6 cyl. 3"x5" engine
HUDSON
"11-12-1 3" Sixes — 1941
"14-15-17" Eights — 1941
"21-22" Sixes -1942
"24-25-27" Eights -1942
Casting numbers on face of flange: 5025, 279; 5015, 286.
Dual Down-Draft Climatic Control Carbureters—Models 501S-502$—List
Price $38.20
A $7.50 exchange allowance is deducted from the list price if buyer turns
in the carbureter which is replaced by a 5015 or 502S.
CARBURETER SPECIFICATIONS
For Hudson Six Cylinder Engine: 3 Inch Bore, 5 Inch Stroke. For Hudson
Eight Cylinder Engine: 3 Inch Bore, 4½ Inch Stroke.
Dimensions: (502S) 1% inch dual, 4 bolt flange. (50IS) 1 inch dual. I
bolt flange.
(Both) Primary venturi, 11/32 inch I. D. (502S) Secondary venturi, 19/32
inch I. D. (50IS) Secondary venturi, 21/32 inch I. D. (5025) Main venturi.
1-3/16 inch I. D. (5015) Main venturi, 1-1/16 inch I. D.
Float Level: (Both) Distance from float to bowl cover, when needle is
seated, to be l inch.
Vents: (Both) Outside, No. 10 drill size—four holes. Inside, none.
Gasoline Intake: (Both) Square vertical needle. Size No. 38 drill hole
in needle seat.
Gas Line Connection: (Both) 5/16 inch Weatherhead nipple. Low Speed Jet
Tube: (502S) Jet size, No. 69 drill. (50IS) Jet size, No. 71 drill.
(Both) By-pass (plug), size No. 51 drill.
(Both) Economizer in body, size No. 56 drill.
(Both) Idle bleed, size No. 54 drill.
Idle Ports: (502S) Length, .175 inch; width, .030 inch. (501S) Length,
.150 inch; width, .030 inch.
Idle Port Opening: (502S) .133 to .137 inch above upper edge of valve
with valve closed tight.
(501S) .108 to .112 inch above upper edge of valve with valve closed
tight.
Lower Port (For Idle Adjustment Screw): (Both) Size, .0615 to .OG55 inch
diameter.
FOR READINGS BELOW, VIEW CARBURETER WITH
Throttle Lever: (Both) Adjusting—on right side, length 1% inches. In
center of travel points up.
Choke: (Both) Carter Climatic Control on left side. Set one point lean.?^
Vacuum Spark Port: (502S) None.
(50IS) .039 to .041 inch diameter. Top of port .029 to .033 inch above valve.
Set Idle Adjustment Screw: (Both) % to 1% turns open. For richer mixture,
turn screw out. Do not attempt to idle engine below G00 r.p.m. or 8 m.p.h.
Main Nozzle: (Both) In primary venturi, angle 45°. (Both) Closed tip.
Inside diameter No. 30 drill. (Both) Upper hole: No. 70 drill on 45° angle.
(Both) Lower hole: No. 52 drill on 60° angle.
Metering Rod (Vacumeter Type): (502S) Economy step, .065 inch diameter; middle
step tapers to .0565 inch diameter; power step, .044 inch diameter. Length
2-59/64 inches. (501S) Economy step, .0615 inch diameter; middle step tapers
to .057 inch diameter; power step, .047 inch diameter. Length 2-59/64 inches.
Metering Rod Jet: (502S) .086 inch diameter.
(501S) .082 inch diameter.
Metering Rod Setting: (Both) Use gauge, part No. T109-113 (2.280 inches).
Accelerating Pump: (Both) High pressure type (spring operated lever), with
adjustable pump stroke.
(Both) Discharge jets (twin) size, No. 74 drill.
(Both) Intake ball check, size No. 40 drill.
(Both) Discharge (needle seat), size No. 50 drill.
(Both) Relief passage (to outside), thru slots in air horn. Pump Adjustment:
(Both) 9/32 inch plunger travel (full throttle position) long stroke. Use
gauge No. T109-117S.
FLANGE DOWN AND FLOAT CHAMBER IN REAR
Choke Heat Suction Hole: (Both) Location in body. Size No. 34 drill.
Choker Valve: (Both) In air horn. Butterfly type, offset valve. Fast Idle
and Unloader: (Both) On right side.
BRIEF CARBURETER ADJUSTMENTS
Spark Plug Gap .032"
Set
Breaker Points
6 Cyl. - .020"
8 Cyl.-.017"
Idle Adjustment
Screw Setting
1h to 11/2
Turns Open
PUMP ADJUSTMENT: With pump connector link in long stroke (outer) hole in
pump arm, and throttle adjustment screw backed out, pump plunger should travel
9/32" from closed to wide open position. Adjustment can be made by bending
throttle connector rod at lower angle. (Use tool T109-75.) Pump travel can
be measured by using gauge T109-117S. Difference between reading at wide
open and seated throttle should be 18. Projecting portion of indicator should
be placed on top surface of lower portion of connector link at pump shaft.
METERING ROD ADJUSTMENT: A. Insert one metering rod gauge T109-113 in place
of metering rods. Be sure gauge seats in metering rod jet after backing out
throttle lever
adiusting screw, so that throttle valves seat. B. Install metering rod pin
and pin spring in metering rod arm. C. Press lightly on vacuum piston link
until piston rests in bottom of cylinder. There may be less than .005" clearance
between metering rod pin and gauge. D. With throttle valve seated, bend lip
on anti-percolator arm' until this clearance is obtained (between metering
rod gauge and metering rod pin). E. Remove gauge and metering rod pin, and
install metering rods, discs, spring, pin and pin spring and hook metering
rod spring on metering rods.
ANTI-PERCOLATOR ADJUSTMENT: This adjustment must be made after pump and metering
rod adjustments have been made. Do not disturb these adjustments. Back out
Copyright 1940
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