2011/07/18 Caterpillar

Generator Set:

C175-16 (S/N: WYB1-UP)

Engine News SEBD9719, 28 July 2011, "New Software Is Used for C175-16 Generator Set Engines". The article has been revised to change one of the applications listed below.

Description of Change: The new software reduces white smoke during cold mode operation.

Adaptable To: The new software is effective with the following serial numbers and ratings:

• WYB00455 for 60 hz engines

• WYB00496 for 50 hz engines

The serial numbers that are listed in Table 1 were flashed with the new software prior to the above serial number break.

Table 1

S/N:WYB00330

S/N:WYB00331

S/N:WYB00351

S/N:WYB00352

S/N:WYB00432

S/N:WYB00449

S/N:WYB00450

S/N:WYB00452

The engine applications, part numbers of the new software, and the part numbers of the former software are listed in Table 2

Table 2

Application	New Part	Former Part
60 Hz Tier II	380-5428	370-6156
60 Hz Low BSFC	380-5429	370-6157
50 Hz Low BSFC	380-5430	370-6158
50 Hz Low Emissions	380-5431	375-6971