TOOTH GROUP 5K9023 - Caterpillar

Illustration 1 g01002256
Typical example of a fuel inlet port on the case of a fuel injectorA washer is installed in place of the fuel inlet screen. Installation of the washer depends on the geometry of the case and on the previous method of screen installation.The washers are roll formed onto new cases and onto cases that had staked screens.The washers are welded onto the cases that had welded screens. The geometry of these cases do not have sufficient material for roll forming.For Electronic Unit Injectors (EUI), serial number 195245 has welded washers. Serial number 198960 has washers that are roll formed.For Mechanical Unit Injectors (MUI), serial number 124341 has washers that are roll formed.The part numbers of the modified fuel injectors are listed in Table 1.
Table 1
Remanufactured Fuel Injector Groups for 3500 Engines    
3500 with MUI     3500 with EUI     3500B    
0R-0906     0R-7780 (1)    
0R-0995     0R-7977    
0R-1756     0R-8215    
0R-1758     0R-8619    
0R-1759     0R-8688    
0R-1760     0R-8690    
0R-2921     0R-8691    
0R-2922     0R-9735    
0R-2923     0R-9796    
0R-2924     0R-9944    
0R-2925     0R-3539     -    
0R-3051     0R-4149     -    
0R-3052     -     -    
0R-3743     -     -    
0R-8338     -     -    
0R-8680     -     -    
0R-8681     -     -    
( 1 ) The fuel inlet ports for this fuel injector are modified by two different methods. Some of the cases have fuel inlet ports with a diameter of 2.8 mm (0.11 inch). The remainder of the cases have washers that are roll formed. None of these fuel injectors have welded washers.