2010/03/05 Caterpillar

Engine:

G3516B (S/N: CEY1-UP; 7EZ1-UP)

Generator Set:

G3516B (S/N: ZBB1-UP; CSC1-UP; ZBC1-UP; CME1-UP)

G3516C (S/N: GSB1-UP; TJB1-UP; GZC1-UP; TJC1-UP; GZZ1-UP)

G3516E (S/N: GAS1-UP; SLY1-UP)

G3520B (S/N: CWD1-UP; GZP1-UP; BGW1-UP)

G3520C (S/N: GZA1-UP; GZB1-UP; GZL1-UP; GZM1-UP; GZN1-UP; B9P1-UP; RLP1-UP; CWW1-UP; CWY1-UP)

G3520E (S/N: GZG1-UP; GZH1-UP; HAL1-UP; SXY1-UP)

Description of Change: The new spark plug has an improved heat transfer characteristic that increases the service life of the spark plug.

Adaptable To: The new 346-5123 Spark Plug replaces the 284-8313 Spark Plug, which is cancelled.

The new spark plug is adaptable to the engines that are listed above. Effectivity is listed in Table 1.