2000/05/22 Caterpillar

Tractor:

772B (PIN: 64W168-UP)

776 (PIN: 14H214-UP)

776B (PIN: 6JC1-UP)

776C (PIN: 2TK1-UP)

776D (PIN: 5ER1-UP; AFS1-UP)

784B (PIN: 5RK1-UP)

784C (PIN: 2PZ1-UP)

Quarry Truck:

775B (PIN: 7XJ1-UP)

775D (PIN: 6KR1-UP; 8AS1-UP)

Off-Highway Truck:

773B (PIN: 63W1286-UP)

773D (PIN: 7CS1-UP)

773D (PIN: 7ER1-UP)

777 (PIN: 84A1343-UP)

777B (PIN: 4YC1-UP)

777C (PIN: 4XJ1-UP)

777D (PIN: AGC1-UP; 3PR1-UP)

777D HAA (PIN: 2YW1-UP)

777D HAA (PIN: AGY1-UP)

785 (PIN: 8GB1-UP)

785B (PIN: 6HK1-UP)

785C (PIN: 1HW1-UP; APX1-UP)

785C HAA (PIN: 5AZ1-UP)

789 (PIN: 9ZC1-UP)

789B (PIN: 7EK1-UP)

789C (PIN: 2BW1-UP)

Description of Change: New seal retainers and a new plate for use with Duo-Cone seals are available for use in certain service brakes. The seal ring ramps for the seal retainers and the plate have an angle of 10 degrees. The angle for the seal ring ramps for seal retainers and plates is now standardized at 10 degrees for off-highway trucks in order to increase performance.

Note: The new seal retainer must be used with a new plate. Do not use a new seal retainer with a former plate. Do not use a new plate with a former seal retainer. The seal ring ramps for the new seal retainers and the new plates have an angle of 10 degrees. The seal ring ramps for the former seal retainers and the former plates have an angle of 6 degrees. If new components are used with former components the angles will not be compatible.

Illustration 1	g00698307
Typical Service and Parking Brake (A) Seal Retainer (B) Plate (C) Duo-Cone Seals

Illustration 2	g00698363
Typical Seal Retainer (A) Seal Retainer

Adaptable To: The new 153-0197 Seal Retainer directly replaces the former 143-2702 Seal Retainer that was used in the 5T-5070 Service and Parking Brake. The new 153-0196 Seal Retainer directly replaces the former 143-2703 Seal Retainer that was used in the service brakes that follow: 5T-3280 Service and Parking Brake, 119-9014 Service and Parking Brake and 2A-7070 Service and Parking Brake. The new 153-0195 Plate directly replaces the former 130-7910 Plate that was used in the service brakes that follow: 5T-5070 Service and Parking Brake, 5T-3280 Service and Parking Brake, 119-9014 Service and Parking Brake and 2A-7070 Service and Parking Brake. The 5T-5070 Service and Parking Brake is used on the front of 789C Off-Highway Trucks. The 5T-3280 Service and Parking Brake is used on the front of 785C Off-Highway Trucks and 784C Tractors. The 119-9014 Service and Parking Brake is used on the rear of 777D Off-Highway Trucks and 776D Tractors. The 2A-7070 Service and Parking Brake is used on the rear of 773D Off-Highway Trucks and 775D Quarry Trucks.

The new 153-0197 Seal Retainer is effective with the 789C (PIN: 2BW129) Off-Highway Truck. The new 153-0196 Seal Retainer is effective with the machines that follow: the 785C (PIN: 1HW123) Off-Highway Truck, the 785C HAA (PIN: 5AZ115) Off-Highway Truck, the 777D (PIN: 3PR1059) Off-Highway Truck, the 777D HAA (PIN: 2YW106) Off-Highway Truck, the 776D (PIN: 5ER128) Tractor, the 775D (PIN: 8AS162) Quarry Truck and the 773D (PIN: 7CS184) Off-Highway Truck. The new 153-0195 Plate is effective with the machines that follow: the 789C (PIN: 2BW129) Off-Highway Truck, the 785C (PIN: 1HW123) Off-Highway Truck, the 785C HAA (PIN: 5AZ115) Off-Highway Truck, the 777D (PIN: 3PR1059) Off-Highway Truck, the 777D HAA (PIN: 2YW106) Off-Highway Truck, the 776D (PIN: 5ER128) Tractor, the 775D (PIN: 8AS162) Quarry Truck and the 773D (PIN: 7CS184) Off-Highway Truck.

Refer to the tables that follow in order to adapt the new seal retainer and the new plate to earlier machines.