Usage:
3306 Truck Engines
- SUPPLEMENT: 11/00/85
TRUCK ENGINE NEWS, AUGUST 31, 1983, PAGE 2. In the article, "New Fuel Ratio Control Group Has Improved Diaphragm", there are two incorrect part numbers in the chart. In the column "New Part No.", change"4W1037" to "7W2830 " and "6V2690" to "6V2689"."6V2689 " is the part number for bulk tubing, and 10 mm (.4") is the length needed.
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Description of Change: A new fuel ratio control group is used on the above engines. An improved diaphragm is used in the new group. The new diaphragm can be removed without the need to adjust the setting of the fuel ratio control. The new fuel ratio control group will give improved acceleration response (ability to increase speed) in some applications.
Adaptable To: The new control group is a direct replacement for the former control group. With both the new and former fuel ratio controls, correct adjustment on the engine is not possible. A bench setting procedure is necessary. The adjustment screw has a protective cover that will show when adjustments are made that are not approved.
