Usage:
3406B Truck Engines (7FB)
Reference: Truck Engine News; November, 1986; Page 3, "New Fuel Ratio Control Used ".
The reference article announces the use of a new 7W5318 Fuel Ratio Control Assembly. Parts Books and microfiche do not include the new parts in the fuel pump and governor groups that use the new fuel ratio control. These parts are shown in the following illustrations. Write a reference note by these groups in the affected Parts Book to refer to this article.
Illustration 1. New parts in the governor and fuel injection pump groups.
Illustration 2. New linkage and parts in the governor group (internal view of governor lever where connected to the new control).
Individual parts of the new control assembly are not serviced. A Service Manual Supplement will cover system operation, testing and adjusting, and disassembly and assembly of the control linkage.