2013/11/13 Caterpillar


A New Alternator and Alternator Bracket Have Been Introduced on Certain C4.4 and C6.6 Engines {1405, 1425}

Usage:

C4.4 444
Generator Set:
C6.6 (S/N: SDA1-UP; N6D1-UP; MRW1-UP)
Industrial Engine:
C4.4 (S/N: 4441-UP)
C6.6 (S/N: 6661-UP)

Description of Change: A new alternator has been introduced. When the engine is equipped with a heavy-duty alternator bracket and an automatic belt tensioner, a new bracket is required in order to fit the new alternator.

Adaptable To: A new bracket is required in the following circumstances:

  • When replacing any of the following old alternator part numbers with any of the new alternator part numbers

  • Only when the engine is equipped with one of the old bracket part numbers

Refer to Table 1 for the affected part numbers.

Table 1
Old Alternator Part Number     Old Bracket Part Number         New Alternator Part Number     New Bracket Part Number    
225-3144     289-8311     383-2556 339-5256    
346-9824    
221-3145     305-7881     383-2557
346-9825    

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