HEAD GP-PUMP 2502535 - Caterpillar

Table 1
Part Numbers of Fuel Injector Groups    
3600 Engine Type    New Pt. No.    Former Pt. No.    Reman Pt. No.    
Distillate Fuel     224-9090     184-2527     10R-1252    
Heavy Fuel Oil     224-9089     168-3554     10R-1253    
3618     224-9091     184-2528     10R-1254    Because the spray pattern of the new injector and the remanufactured injector is more efficient, the engine timing must be retarded by 2.5 degrees in order to maintain the emission levels that were provided by the former injectors. The timing dimension of the injectors must be adjusted.The Special Instruction, REHS1608, "Determining the Fuel Injector's Timing Dimension" is available for use with the new injectors and with the remanufactured injectors.To determine the new timing dimension, the current static timing and the current timing dimension must be known. The Special Instruction includes two different procedures for obtaining the data: one method uses the traditional Technical Marketing Information (TMI) and the other method uses the TMIWEB on the internet. The data is referenced to a Table in the Special Instruction in order to obtain the correct timing dimension for the new injectors and for the remanufactured injectors.