2013/11/25 Caterpillar

Generator Set:

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

Engine:

C175-16 (S/N: M6A1-UP; M6B1-UP; WYC1-UP; P6L1-UP; R1X1-UP)

C175-20 (S/N: BXR1-UP)

Engine News SEBD9913, 25 November 2013, "New Breather Assemblies Are Now Used on Certain C175 Engines". The original article has been revised to update the effective serial numbers.

Description of Change: The new breather assemblies and gaskets provide a better seal.

Adaptable To: The new 388-3276 Breather As and 439-5502 Gasket replace the 276-2724 Breather As .

The new 388-3276 Breather As and 439-5502 Gasket replace the 276-2724 Breather As are adaptable to the above engines back to first production.

The new parts required are listed in Table 2.

Table 1

Qty	Part
8	9X-8268 Washer
4	383-6310 Clamp  (1)
2	388-3276 Breather As
2	439-5502 Gasket

( 1 )

Tighten the clamp bolts to 124 N·m (91 lb ft).

The effective serial numbers are listed in Table 2.

Table 2

Effective Serial Numbers
S/N:M6A01008-UP
S/N:M6B01005-UP
S/N:P6L01041-UP
S/N:R1X00114-UP
S/N:WYB01470-UP
S/N:WYC01002-UP
S/N:BXR01034-UP