2013/10/17 Caterpillar

Electric Power Generation:

3512 (S/N: ZAF1-UP)

3512B (S/N: ZAH1-UP)

3516B (S/N: ZAP1-UP)

3516C (S/N: SBK1-UP)

Engine:

3508B (S/N: S2B1-UP; S2D1-UP; S2E1-UP; 3DM1-UP; 5PS1-UP)

3512 (S/N: FDR1-UP)

3512B (S/N: CMC1-UP; NSC1-UP; 2AF1-UP; PWG1-UP; S2J1-UP; S2K1-UP; S2L1-UP; PTM1-UP; 7HM1-UP; 2GW1-UP; 3ZW1-UP; 4AW1-UP; 2EZ1-UP)

3512C (S/N: TTF1-UP; SBG1-UP; TTG1-UP; MKH1-UP)

3516 (S/N: ZAL1-UP; GZR1-UP)

3516B (S/N: BCK1-UP; FDN1-UP; 9AN1-UP; S2P1-UP; PBR1-UP; S2R1-UP; S2S1-UP; 2FW1-UP; S2X1-UP)

3516C (S/N: PAG1-UP)

Petroleum Engine:

3508C (S/N: LLE1-UP)

3512C (S/N: LLA1-UP; R1S1-UP)

3516C (S/N: PES1-UP)

Description of Change: The gaskets have an improved surface bead on both sides that improves the sealing capability.

Adaptable To: The improvement has been made to the 122-8856 Gasket, 241-5928 Gasket, and 243-2288 Gasket .

The 122-8856 Gasket, 241-5928 Gasket, and 243-2288 Gasket are adaptable to the above engines back to first production.

The change is effective with engine serial numbers built on or after 15October 2013.