Chevrolet with Old Carter Carburetors : CHEVROLET PASSENGER & TRUCK G. M. C. TRUCK 1946Previous | Home | Next |
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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 idle adjustment screw and throttle lever
adjusting screw. If these adjustments do not correct the trouble, remove low
speed jet tube and clean thoroughly with compressed air. Examine and see that
tube seats gasoline-tight in body casting, top and bottom. If not, replace
with a new tube of identical specifications. NEVER CHANGE A LOW SPEED JET TUBE
FROM ONE CARBURETER TO ANOTHER.
Increased resistance on foot throttle indicates a clogged pump jet. 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 ball checks must be seated gasoline-tight.
Poor acceleration may be due to damaged or worn plunger leather in accelerating
pump, corrosion in pump cylinder, loose or cracked cylinder, cracked plunger
cup or bent pump arm (parts which may be replaced at small cost). If plunger
is removed from cylinder, always use loading tool in reassembling to avoid
damage to plunger leather.
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Chevrolet Six—I 946—Carbureter No. 574S—List Price $ 17.65
When Servicing, Use Gasket Assortment No. 638A—Price $0.50; Repair Parts
Pkg. No. I089A, $7.30 PART NAMES IN BOLD TYPE, LISTED BELOW, INDICATE CONTENTS
OF REPAIR PACKAGE
All Prices Subject to Prevailing Surcharge
Part No. PART NAME List Pri.e
IA-17 Flange gasket . ___.-___.-.- __ _.__ $0.07
2-104 Throttle valve -_. .15
3-470S Throttle shaft and lever assembly 1.05
6-374S Air horn assembly . 4.05
7-107 Choker valve . . . .30
1 1-1735 Low speed jet assembly .45
IIB-12 Rivet plug (7) .04
I I B-25 Dis's check passage plug .15
IIB-62 Rivet plug .04
IIB-164 Nozzle plug .15
II B-198 Pump je; passage plug .15
IIB-199 Nozzle and idle passage plug (2) .15
12-2745 Nozzle assembly ___-. . . .65
14-2685 Choker assembly .50
14-2705 Choker shaft and lever assembly .60
20-22 *Needle seat gasket :._ .__..-__..-.. _ . .07
20-26 *Metering rod jet gasket . .07
20-29 Pump cylinder gasket—upper .07
20-45 Nozzle gasket .07
20-71 Air horn gasket-- . ----. .. . 07
2 I-45S Float and lever assembly __________ 1.20
24.15 Float lever pin .-. .07
25-33S Needle and seat assembly 1.20
30-20 Strainer gauze 15
30A-40 Idle adjustment screw . .45
39-10 Choke valve attaching screw (2) 2 for .07
39-11 Throttle valve attaching screw (2) 2 for .07
48-43 Pump jet, 72 drill-__ .20
53A-225S Pump lever assembly_-_ _ _-.___- .45
61-96 Pump spring .15
61-97 Adjusting screw lock spring ._ __.. .15
6 1 - 1 2 8 Connector rod spring . _- - .07
61-200 Plunger spring ._....__-.. _... . .15
6 1 - 2 3 1 Choker valve spring._..____ . . .. .15
61-242 Metering rod spring._. . .15
PART NAME List Price
Pump connector link spring._. .15
Tube clamp assembly_ ____-__ - _ - -- ________ .35
Spring retainer . . .07
Retainer ring -- - - .__.... __Plunger and rod assembly (Identify by .07
Shaft No. 49-129) 1.05
Metering rod—standard—.067"-.067" to
.062"-.062" to .060"-.046 ___ -. .. .45
Me,ering rod—I size lean—.068"-.068" to
.065"-.065" to .064"-.049" .45
Wire clamp screw .07
Throt le shaft arm clamp screw .07
Throttle lever adjusting screw- _ _. .. .07
Attaching screw and washer assembly .07
Aft-.ching screw and washer assembly--. (7) .07
Tube clamp screw screw (2) .07
Tube clamp nut (2) .07
Flange nut .......(2) .07
Throttle shaft arm and screw assembly._- __ .30
Throttle connector rod .35
Dust cover . . .75
Metering rod jet assembly—.093" Dr. .45
Bowl cover gasket .15
Intake disk check assembly .35
Discharge disk check assembly .35
Metering rod disk ._. .04
i'Plug washer (conical) 136-50 (flat) .02
4-Plug washer (conical) 136-49 (flat) (2) .02
tPlug washer (conical) 136-48 (flat) (2) .02
Bowl cover and countershaft assembly 1.85
Pin spring (3) .02
Pin spring . .. ... ... .02
Gas line fitting (brass) optional... .30
Gas line fitting {steel) .30
Felt packing 07
*Gaskets so marked must be soaked in 90 proof denatured alcohol for 15 minutes,
installed on part, and let dry before using. j'Note: The use of flat or conical
plug washers should be determined by shape of seat in casting.
NOTE: Small figures in parertheses preceding list price indicate number of
pieces used in one carbureter. Where no figure is shown, only one is used.