2006/01/16 Caterpillar

Pipelayer:

561M (S/N: 1KW1-UP)

561N (S/N: CPH1-UP)

Track-Type Loader:

953B (S/N: 5MK1-UP)

953C (S/N: 2ZN1-UP; BBX1-UP)

963B (S/N: 9BL1-UP)

963C (S/N: 2DS1-UP; BBD1-UP)

Track-Type Tractor:

D5M (S/N: 6GN1-UP; 3CR1-UP; 3DR1-UP; 4BR1-UP)

D5N (S/N: AKD1-UP; AGG1-UP)

Description of Change: An improved pivot shaft seal is now available for the 953B/C, 561M/N, and D5M/N. The seal for the pivot shaft on the track roller frame has failed in some instances and allowed oil to leak from the pivot shaft. The improved 266-5291 Seal will replace the 8G-2991 Seal .

The improved 266-7459 Seal will replace 3W-7968 Seal on the 963B/C.

Adaptable To: The improved 266-5291 Seal is effective with the following machines:

• CPH129-UP

• BBX2525-UP

• AKD1701-UP

• AGG2104-UP

The improved 266-5291 Seal is adaptable to the following machines:

• 1KW1-UP

• CPH1-128

• 5MK1-UP

• 2ZN1-UP

• BBX1-2524

• 3CR1-UP

• 3DR1-UP

• 4BR1-UP

• 6GN1-UP

• AKD1-1700

• AGG1-2103

The improved 266-7459 Seal is effective with the following machines:

• BBD2391-UP

The improved 266-7459 Seal is adaptable to the following machines:

• 9BL1-UP

• 2DS1-UP

• BBD1-2390