TIP AS-PEN 3889221 - Caterpillar

Illustration 1 g01824913
Typical exampleMechanical unit injector (MUI)Mechanical unit injectors are used on some of the 3116 and 3126 Engines. Refer to Illustration 1. The fuel rack cannot be moved by hand on all injectors. In order to move the rack, the pin that is located in the injector must be moved by mechanical force, and the tappet spring must be compressed.
Table 1
Part Numbers for the Fuel Injector Group    
New Part Number     Remanufactured Part Number     Part Name    
127-8222     0R-8461     Fuel Injector Gp    
162-0212     0R-8463     Fuel Injector Gp    
127-8228     0R-8465     Fuel Injector Gp    
127-8220     0R-8467     Fuel Injector Gp    
127-8225     0R-8469     Fuel Injector Gp    
4P-2995     0R-8471     Fuel Injector Gp    
127-8213     0R-8473     Fuel Injector Gp    
127-8207     0R-8475     Fuel Injector Gp    
127-8211     0R-8477     Fuel Injector Gp    
127-8205     0R-8479     Fuel Injector Gp    
127-8209     0R-8483     Fuel Injector Gp    
162-0218     0R-8633     Fuel Injector Gp    
127-8216     0R-8682     Fuel Injector Gp    
127-8218     OR-8684     Fuel Injector Gp    
140-8413     0R-8867     Fuel Injector Gp    
173-4647     10R-8996     Fuel Injector Gp    Refer to Table 1 in order to determine the fuel injector groups that are affected.After the repairs are completed on the engine, run the engine test that is specific for the application.