2005/10/03 Caterpillar

Marine Engine:

3054 (S/N: CSH1-UP; CYK1-UP)

3056 (S/N: CKS1-UP)

Industrial Engine:

3054C (S/N: 3341-UP)

3054E (S/N: 3041-UP)

3056E (S/N: 3561-UP)

3054 (S/N: 6FK1-UP; 5YS1-UP)

3054B (S/N: 5MF1-UP)

3056 (S/N: 1ML1-UP; 7MS1-UP)

Generator Set:

3054 DI (S/N: 4ZK1-UP)

3054 (S/N: CHN1-UP; TCN1-UP; 2PW1-UP)

3056 DI (S/N: 7AK1-UP)

3056 (S/N: SNX1-UP)

C4.4 (S/N: S1M1-UP)

Description of Change: A new retaining plate and new bolts are now available for the engines that are listed above. When you replace the bushing on the engine idler gear there is a new thicker retaining plate and longer bolts that are now used.

Adaptable To: Use the same bushing 067-6899 Idler Gear Bushing when you replace the bushing on the engine idler gear because of wear. Do not use 067-6900 Retaining Plate when you replace the bushing on the engine idler gear. Use the new plate 255-1209 Retaining Plate and use the new bolts 6I-0650 Bolt when you replace the bushing on the engine idler gear. The new bolts 6I-0650 Bolt are needed because of the new thicker retaining plate 255-1209 Retaining Plate. If necessary, replace 067-6897 Idler Gear Hub if you notice excessive wear on the hub.