2014/12/12 Caterpillar

Engine:

3512B (S/N: S2H1-UP; S2K1-UP)

3512C (S/N: TTG1-UP; SLM1-UP; TKP1-UP; NJT1-UP; T3W1-UP; F2X1-UP; T3Y1-UP)

3516B (S/N: 4BW1-UP; S2X1-UP)

3516C (S/N: PAG1-UP; TKG1-UP; TTH1-UP; TTJ1-UP; TKR1-UP; JTS1-UP; TKS1-UP; TKT1-UP; TKX1-UP; TKY1-UP; TTY1-UP)

Engine News SEBD9972, 12 December 2014, "A New Turbine Outlet Bellows Assembly Is Available for Certain 3500 Commercial Engines ". Disregard the previous article, the serial number effectivity has been changed.

Description of Change: The new bellows assembly is made from seamless tubing.

Adaptable To: The new 449-9633 Bellows As replaces the former 311-3385 Bellows As .

The new bellows assembly is adaptable to the above engines back to first production. Refer to Table 1 for the effective serial numbers.

Table 1

Effectivity

S/N:S2H00689-UP

S/N:S2K00382-UP

S/N:NJT00232-UP

S/N:SLM00653-UP

S/N:TTG00392-UP

S/N:F2X00354-UP

S/N:T3W00251-UP

S/N:T3Y00201-UP

S/N:TKP00232-UP

S/N:4BW00591-UP

S/N:PAG00483-UP

S/N:S2X01700-UP

S/N:JTS00531-UP

S/N:TTH01044-UP

S/N:TTJ00638-UP

S/N:TKG00101-UP

S/N:TKR00218-UP

S/N:TKS00234-UP

S/N:TKT00244-UP

S/N:TKX00206-UP

S/N:TKY00354-UP

S/N:TTY00104-UP