STUD-TAPERLOCK 1860870 - Caterpillar

Engine:
3412C (S/N: DJN1-UP; 9EP1-UP; TFT1-UP; BCW1-UP)
Description of Change: A new bevel nut with a washer is now being used to secure the radiator core. This new bevel nut with a washer has a nylon insert that will help provide a more secure joint thus improving reliability of the radiator.Adaptable To:
Table 1
Genset for the Serial Numbers    
241-7649 Radiator Gp     241-7650 Radiator Gp    
S/N:9EP03433,03435-UP     S/N:9EP03341-03401,3404-UP    
S/N:BCW00845-UP     S/N:BCW00845-UP    
S/N:DJN00464-UP     S/N:DJN00350,00375,Up    
S/N:TFT00206-UP     S/N:TFT00206-UP    The 266-8649 Nut is now used in new production. The nut is adaptable to earlier production serial numbers. The 266-8649 Nut is effective with the serial numbers in Table 1. The 266-8649 Nut should not be reused in service work due to the nylon insert.