2005/02/28 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.