Accelerator Pumps, VITON - Two Types Available

Number 83-I-70 Section 6 Date 05/83
Subject: VITON ACCELERATOR PUMPS FOR ALL 1975-1983 MODELS EQUIPPED WITH DUALJET OR QUADRAJET CARBURETORS
Viton accelerator pumps are now available from WDDGM for service when a customer uses a high aromatic fuel, such as gasohol or stores the vehicle for long periods of nonoperation.

Two (2) types of viton accelerator pumps are available and must be used in the correct float bowl assembly...

Figure 1:

Float bowl assemblies that have the letters "MW" (machined well) embossed next to the throttle position sensor electrical connector, use the red lip (with garter spring) viton accelerator pump only. Some 1982-1983 carburetors with a machined well (MW) used during production, were assembled with the red viton pump. If the carburetor does not have the red viton pump, a blue dot will be on the rear of the throttle body base near the mounting hole see Figure 1 below).

Figure 2:

If the letters "MW" are not on the float bowl assembly (nonmachined or tapered well) a blue, thin lip accelerator pump should be installed. Use the parts list (attached to this bulletin) to select the correct accelerator pump (see Figure 2 on the reverse side).
Viton service replacement pumps are identified as H.D. (heavy duty) in the parts catalog.

NON-MACHINED WELL
MACHINED WELL (MW) (TAPERED)
Red Lip Blue-Thin Lip
(With Garter Spring) (No Garter Spring)
(17072978) (See Attached List)
REPLACEMENT VITON PUMP ASSEMBLIES FOR 1975-1982 NON-MACHINED WELL DUALJET AND QUADRAJET CARBURETORS

CARBURETOR REPLACEMENT
NUMBER PUMP ASSEMBLY
- 1975 -
7045240 17074106
7045244 17074109
7045246 17074109
7045541 17074106
7045544 17074109
7045548 17074106

17056240 - 1976 - 17074106
17056244 17074109
17056246 17074109
17056540 17074106
17056544 17074109
17056546 17074109

17057241 - 1977 - 17074109
17055242 17074109
17057248 17074109

17058192 - 1978 - 17074104
17058240 17074104
17058241 17074109
17058246 17074109
17058249 17074106
17058498 17074104
17058540 17074104

17059180 - 1979 - 17074104
17059184 17074104
17059190 17074104
17059191 17074104
17059193 17074104
17059194 17074104
17059196 17074104
17059240 17074104
17059241 17074109
17059242 17074104
17059243 17074104
17059247 17074106
17059249 17074106
17059491 17074104
17059492 17074104
17059496 17074104
17059498 17074104
17059540 17074104
17059543 17074104
17059544 17074104
17059546 17074104
17059547 17074104


17080185 - 1980 - 17074104
17080187 17074104
17080190 17074104
17080191 17074104
17080192 17074104
17080195 17074104
17080197 17074104
17080199 17074104
CARBURETOR REPLACEMENT
NUMBER PUMP ASSEMBLY
- 1980 (Continued) -
17080240 17074104
17080241 17074104
17080242 17074104
17080243 17074104
17080244 17074104
17080247 17074104
17080249 17074104
17080491 17074104
17080493 17074104
17080495 17074104
17080496 17074104
17080498 17074104
17080540 17074104
17080542 17074104
17080543 17074104
17080545 17074104


17081190 - 1981 - 17074104
17081191 17074104
17081192 17074104
17081193 17074104
17081194 17074104
17081196 17074104
17081197 17074104
17081198 17074104
17081199 17074104
17081242 17074104
17081243 17074104
17081245 17074104
17081247 17074104
17081248 17074104
17081249 17074104
17081289 17074104
17081294 17074104
17081295 17074104
17081492 17074104
17081493 17074104
17081496 17074104
17081497 17074104

17082183 - 1982 - 17074104
17082192 17074104
17082194 17074104
17082195 17074104
17082196 17074118
17082197 17074104
17082243 17074104
17082244 17074104
17082245 17074104
17082246 17074104
17082247 17074104
17082248 17074104
17082249 17074104
17082260 17074104
17082294 17074104
17082295 17074104
17082298 17074104
17082299 17074104
17082492 17074104