2014/07/03 Caterpillar

Excavator:

5230B (S/N: 4HZ1-UP)

Transmission:

TH55 - KRESS (S/N: KCH1-UP)

Off-Highway Truck/Tractor:

776D (S/N: AFS1-UP)

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

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

777D (S/N: FKR1-UP; 3PR1-UP)

784C (S/N: 2PZ1-UP)

785 (S/N: 8GB1-UP)

785B (S/N: 6HK1-UP)

785C (S/N: APX1-UP; 5AZ1-UP)

785D (S/N: DMC1-UP; MSY1-UP)

789 (S/N: 9ZC1-UP)

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

789C (S/N: 2BW1-UP)

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

793C (S/N: CBR1-UP; 4AR1-UP; ATY1-UP; 4GZ1-UP)

793D (S/N: FDB1-UP)

Track-Type Tractor:

D11N (S/N: 4HK1-UP; 74Z1-UP)

Wheel Dozer:

854G (S/N: AMP1-UP; A4W1-UP; 1JW1-UP)

Wheel Loader:

992G (S/N: 7HR1-UP; AZX1-UP; ADZ1-UP)

994 (S/N: 9YF1-UP)

994D (S/N: 3TZ1-UP)

994F (S/N: 4421-UP)

994H (S/N: DWC1-UP)

Description of Change: The new accessory drives have a tighter shaft clearance. This tighter clearance prevents oil leakage.

Adaptable To: The new accessory drive replaces the existing accessory drive. The new accessory drive is adaptable back to first production on the serial numbers listed above.

Install the parts identified in Table 1 and Illustration 1 using any other parts required per application. Refer to Parts Identification for the required parts per application.

Refer to the Disassembly and Assembly manual for the correct procedures.

Illustration 1	g03747376
Accessory drive

This change is effective on the serial numbers listed in Table 2.