f o r m n o . 2 0 0 6SERVICE INSTRUCTIONSCARTER CARBURETORMODELS -WGD

I . D I S A S S E M B L Y.

Disassemble in the order of index numbers on the explodeddrawing, on the opposite side of this sheet. Note location of holesso that linkage may be reinstalled in the same holes for correctsettings. Note thermostat setting on choke so that it can be re¬turned to the same position on reassembly,n . C L E A N I N G .

Soak parts to soften and remove all foreign material. Use 1) acommercial carburetor cleaning solvent; 2) lacquer thinner; or 3)d e n a t u r e d a l c o h o l . “s a r y ,

posits. Rinse parts with-clean solvent and blow outcastings with compressed air.I I I . R E A S S E M B L Y.

Reverse disassembly procedure. .r v . A D J U S T M E N T S ,

a- Float Adjustment. Hold air horn upside down with float in placeandgasket removed. Measure the distance between top edge of floatand surface of air horn with gage supplied. (See figure 1.) Adjustby bending the float lip only. Make sure the float does not bind.

t>. Pump Rod Adjustment. All cars having parallel listed in thepump dimension column of Adjustment Data Table are adjusted asfollows: (See figure 2.) Back out throttle stop screw to seat throttlevalves in bore. Hold valves seated and bendconnector rod, as indi¬cated in figure 2, until the flat surface on top of the pump arm isparallel with the machined surface of dust cover housing. All frac¬tional inch settings in Adjustment Data Table are adjusted by bend¬ing throttle connector rod, as indicated in figure 3, until the top of

pump plunger is the distance specified below the machined surfaceof the dust cover housing,

c. Metering Rod Setting. Back out throttle stop screw untilthrottle valves seat in bore. With valves held closed, loosen screwin metering rod arm (figure 4), push vacuum piston link down untilmetering rods are bottomed in body casting, rotate metering rodarm until the lever on the arm is in contact with the vacuum pistonl ink. Tighten screw and recheck.

ti. Fast Idle Adjustments. Identify carburetor by comparing itwith figures 5through 8and proceed as follows:

Figure 5Adjustments: All adjustments referenced to figure 5in Adjustment Data Table —remove choke thermostat housing,gasket and baffle plate. Hold choke valve closed; open throttleslightly then close it to position fast-idle linkage. Bend chokenector rod until throttle valves are opened to the dimension givenin the tab le .

Figure 6Adjustments: Hold choke valve closed to positionthe link in its uppermost position. Loosen locknut on the adjustablechoke rod and rotate the sleeve until throttle valves are opened tothe dimension given in Adjustment Data Table. Tighten locknuta n d r e c h e c k .

Figure 7Adjustments: Hold choke valve closed to positionhighest portion of fast-idle cam in contact with fast-idle adjustingscrew or tang. Rotate adjusting screw (or bend tang) until throttlevalves are opened to dimension shown in Adjustment Data Table.Measure with a.wire gage on side opposite idle ports.

Figure 8Adjustments: Withchoke valve closed, adjustpositionof fast-idle cam to produce the dimension (shown in table) betweenthe stop tab on the cam and body casting as shown in figure 8. Open

( c o n t i n u e d p a g e 3 )

Use abristle brush to aid cleaning, if neces-Make certain throttle body is free of all hard carbon de¬

p a s s a g e s i nc o n -

C A U T I O N : D O N O T E X E R TP R E S S U R E O N R E S I L I E N TN E E D L E V A L V E .

a M E A S U R EA ~o r F i g u r e 8E 2n

Figure 1

F i g u r e 7

Figure 9.

Figure 2 Figure 3 Figure 10.

F i g u r e 5Figure 4 Figure 6 F i g u r e 11 .

A D J U S T M E N T D A T A T A B L E

Fas[ Idle UnloadeiPump Adj, (continued from page 1)choke valve wide, close throttle valves and rotate fast-idle adjust¬ing screw until it just touches the projection on fast-idle cam.

e. Unloader Adjustment. Hold throttle valves wide open and closechoke valve as far as it will go without forcing it. The clearancebetween choke valve and air horn wal l should be as l is ted in Adjust¬ment Data Table. Bend the arm to adjust at location shown j'rfigures 9or 10,

f. Me Adjustment. Install carburetor and warm up engine; setthrottle stop screw (2, figure 11) until engine idles at between AOOand 500 rpm. Rotate adjusting screws (l)until engine idles smooth¬ly. It may be necessary to alternate between idle adjusting screws(1) and throttle stop screw (2) until engine idles smoothly at re¬quired rpm.

1972 PONTIAC-FOR IDLE ADJUSTMENT )ATA REFER TO DECALI N E N G I N E C O M P A R T M E N T

H o a tL e v e l Fig. Dimen.Fig, Oimen. Fig. Dimen,Year &Make

7/327 ,026 101955-60 Buick1955-6 7Cheviolet1934-56 V-8 Ford

1950-54 6cyl, Hudson1950-52 8cyl, Hudson1955-56 6cyl. Hudson1955-56 8cyl. Hudson1951-54 Kaiser Frazer1955-56 Nash Ambassador1957 Rambler V-8

1949 Oldsmobile 714SA1949-50 Oldsmobile 849S1951-53 Oldsmobile1954 Oldsmobile1949-50 Packard1951 Packard

1952-54 Packard1955 Pontiac1972 Pont iac

1954-55 Willys

1/4 2 P a r a l l e lP a r a l l e l

Para l le l

7 .015 10 7/321/4 2.028 10 3/161/4 2 7

9 5/323/16 3 1/2” 5 ,0265/323/16 3 1/2” 5 .026 97/322 Para l le l

Para l le l

5 .030 91,.'45 .030 9 3/161./4 2

1/2" 5 ,020 9 9/649 / 3 2 33/161/4 2 P a r a l l e l

P a r a l l e l

P a r a l l e l

P a r a l l e l

ParallelParallel

15,'3215/32

5 .023 9

7/32 5 ,023 9 3/1621/4 2 ,018 10 1/4

.015 10 7/641/4 21/4 2 5 ,020 9 1/41/4. 2 5 ,020 9 7/32

i

7/32 3 5 .026 9 1/87/32 3 5 ,023 9 1/8 R E F .7/32 3 1/2 5 .023 9 1/8 N O M E N C L A T U R EN O7/32 5/322 Para l le l

P a r a l l e l5 .026 9

5 / 1 6 " 2 10 3 / 1 6 " D u s t c o v e r s c r e w a n d l o c k -washer assyDust coverD u s t c o v e r g a s k e t . . . . . .Th ro t t l e and choke connec to rr o d r e t a i n e r sThrottle connector rod - .C h o k e c o n n e c t o r r o d . . . .Air horn attaching screw andlockwasher assy, Air horn assy ... Float pin Float assy Bowl cover gasketVacuum pistonPin spring Pump link P u m p p l u n g e r . . . . . . .L o w s p e e d j e t . . . . . . .P u m p o p e r a t i n g l e v e r . . .Pump armMetering rod arm Vacuum piston linkMetering rod N e e d l e a n d s e a t a s s y . . . .Needle seat gasketCoil housing attaching screwC o i l h o u s i n g r e t a i n e r . . . .Thermostatic housing assy,.C o i l h o u s i n g g a s k e t . . . . .Baffle plateStrainer nut

Strainer nut gasketStrainerPump springVacuum p i s ton sp r i ng . . . .Pump jet housing screw ..Pump jet housingPump jet housing gasket ..Pump check needlePump cylinder ball retainerP u m p i n l e t b a l l . . . . . . .Metering rod jetsBody flange screw and lock-washer assyMain body assyBody flange gasketI d l e a d j u s t i n g s c r e w . . . .Idle adjusting screw springBody flange assyF l a n g e g a s k e t . . . . .Te r m i n a l c a p a t t a c h i n gscrew ,..,

Te r m i n a l , c a p h o l d - d p w n c l i pTe r m i n a l c a p a s s y . . . . .S w i t c h r e t u r n s p r i n g , , , ,Switch guide blockSwitch plungerSwitch ball

1.0209/32 3 1/2 5 9 9/64

23

4

5

67

8

9

1 01 11 2

1 3

1 41 5161 7

1 8

1 92 0

2 12 2

2 32 4

2 52 8

2 72 82 9

3 03 1

3 23 3

3 4 >

3 53 6

3 73 8

3 9

4 0

4 1

4 2

4 3, 4 4

4 54 6

4 7

4 8

4 9

5 0

51

525 35 4