ACTUATOR GP-PUMP 2560088 - Caterpillar

Industrial Engine:
3114 CUSTOM T DI (S/N: 5EF1-UP)
3116 (S/N: 5TS1-UP; 2MR1-UP; 5EN1-UP; 2WG1-UP)
3116 T DI (S/N: 4PG1-UP)
3126 (S/N: 6MS1-UP; 9ZR1-UP)
Marine Engine:
3116 (S/N: 4KG1-UP)
3116 CUSTOM T DI (S/N: 1SK1-UP)
3126 (S/N: 8NM1-UP; 1ZJ1-UP)
3126 TA (S/N: 6SR1-UP)
Generator Set Engine:
3114 (S/N: 5JG1-UP)
3114 T DI (S/N: 6AF1-UP)
3116 (S/N: 2SG1-UP)
3116 T DI (S/N: 1NJ1-UP)
Engine News SEBD9535, 7 April 2008, "Improvements have been made to Remanufactured Fuel Injectors". Disregard this article. See the article that follows.Description of Change: Some issues with Mechanical Unit Injectors (MUI) have occurred on certain engines.Adaptable To: The part numbers for the affected remanufactured fuel injectors are listed in Table 1.
Table 1
Part Number    
0R-8461 Fuel Injector Gp    
0R-8463 Fuel Injector Gp    
0R-8465 Fuel Injector Gp    
0R-8467 Fuel Injector Gp    
0R-8469 Fuel Injector Gp    
0R-8471 Fuel Injector Gp    
0R-8473 Fuel Injector Gp    
0R-8475 Fuel Injector Gp    
0R-8477 Fuel Injector Gp    
0R-8479 Fuel Injector Gp    
0R-8483 Fuel Injector Gp    
0R-8633 Fuel Injector Gp    
0R-8682 Fuel Injector Gp    
0R-8684 Fuel Injector Gp    
0R-8867 Fuel Injector Gp    The information below explains the solution to each one of the issues that was occurring with the Mechanical Unit Injectors (MUI).The remanufactured Mechanical Unit Injectors (MUI) are now shipped with the rack in the fuel OFF position in order to eliminate the need to move the fuel rack before installation into the cylinder head. The fuel rack on the Mechanical Unit Injectors (MUI) should not be moved without compressing the tappet spring.The issue of the dragging of the fuel rack was caused by the process of remanufacturing the cones for the fuel injectors. The remanufactured cones were causing the rack to drag. The cones are now remanufactured in order to eliminate the fuel rack from dragging.
Illustration 1 g01503560
The cones that are discolored are circled. (1) Area of discolorationThe change in the process of remanufacturing the cones for the injectors has caused the cones to have some discoloration on the cone. The change in the appearance of the remanufactured cones is normal. The discoloration will not affect the performance of the fuel injectors. Illustration 1 shows the area of discoloration (1) on the injector cones.