2007/12/31 Caterpillar

Off-Highway Truck/Tractor:

776B (S/N: 6JC1-UP)

776C (S/N: 2TK1-UP)

776D (S/N: 5ER1-UP)

777B (S/N: 4YC1-UP)

777C (S/N: 4XJ1-UP)

777D (S/N: 3PR1-UP)

784B (S/N: 5RK1-UP)

785 (S/N: 8GB1-UP)

789 (S/N: 9ZC1-UP)

789B (S/N: 7EK1-UP)

793B (S/N: 1HL1-UP)

793C (S/N: 4AR1-UP)

Description of Change: The chart shows the direct replacement part numbers for the stronger bolts and studs in the brake pack joints for use in service brake groups. The newstronger bolts and studs improve the service life of the brake group.

Adaptable To: Table 1 and Table 2 explain the adaptability of the bolts and studs.

Illustration 1	g01447370
Typical view of a service brake group (A) Stud (B) Bolt