Usage:
3406C (3ZJ) Truck Engines, 3406B (2EK) PEEC Truck Engines
- SUPPLEMENT: 05/00/93
Truck Engine News, March 1993, Page 5, "New Bushing Used In Fuel Injection Pump Groups"
The Effective Engine Serial Numbers provided in the Chart are NOT correct. A corrected Chart follows:
--------------- END SUPPLEMENT ---------------
Reference: Truck Engine News, September 1992, Page 2; "New Fuel Injection Pump Groups Have Larger Diameter Camshaft Bores, New Lifter Assembly, And Shorter Plunger And Barrel Assembly " on 3406B and 3406C Engines Truck Engines.
Description of Change: A new bushing is used with the high lift fuel injection pump camshaft and shorter 4P7681 Pump Plunger And Barrel. See the Reference Article. The new bushing must not be used on fuel injection pump groups without the high lift camshaft and shorter pump plunger and barrel. Also, the former bushing must not be used on the new fuel injection pump groups with the high lift camshaft.
Illustration 1. Location of the new 4P2899 Bushing in the fuel injection pump group.
Adaptable To: The new 4P2899 Bushing is in effect as listed in the chart. The 4P2899 Bushing should not be used to replace a 7C6617 Bushing and a 7C6617 Bushing should not be used to replace a 4P2899 Bushing.
Illustration 2. Difference between the 7C6617 Bushing (A) and the 4P2899 Bushing (2) is raised lip (3).
