- Industrial Engine:
- 3114 CUSTOM T DI (S/N: 5EF1-UP)
- Marine Engine:
- 3116 (S/N: 4KG1-UP)
- Generator Set Engine:
- 3114 (S/N: 5JG1-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)
- 3116 CUSTOM T DI (S/N: 1SK1-UP)
- 3126 (S/N: 8NM1-UP; 1ZJ1-UP)
- 3126 TA (S/N: 6SR1-UP)
- 3114 T DI (S/N: 6AF1-UP)
- 3116 (S/N: 2SG1-UP)
- 3116 T DI (S/N: 1NJ1-UP)
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.
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 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 discoloration |
The 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.