New Viton Rubber Seals Used{1302,1307,1312,1306,1317,1200}
Usage:
3500 Family Of Engines;
D11N, 776B Tractors;
777B, 785, 789 Trucks
Description of Change: New O-ring seals are used in many groups on the 3500 Family Of Engines; D11N, 776B Tractors; and 777B, 785, 789 Trucks. The new O-ring seals are made from Viton rubber. The new material makes the seals more resistant to becoming hard when exposed to heat.
Adaptable To: The part numbers of the new and former O-ring seals, along with the group names and models where the seals are used, are listed in the chart.
Caterpillar Information System:
1989/07/10 New Mounting Brackets And Side View Mirrors{7319}
1989/07/10 New Air Conditioning Duct Has Better Heat Resistance{7320}
1989/07/10 Serviceable Parts For Hydraulic Pumps{5070,5073}
1989/07/03 New Latch Kit Available For Rear Differential Cover{1150}
1989/07/03 New Hydrostatic Steering Valves Available To Improve Steering Performance{4307}
1989/07/03 Use Same Torque For All Sizes Of Threaded Crown Hydraulic Cylinders{5100,7562}
1989/07/03 Air Conditioning Service Tooling{0757,0786,7320}
1989/07/03 All Wheel Drive System Disabled For Shipping Purposes{7500}
1989/06/26 New Connector With An Orifice Added To Fuel Injection Lines Groups To Help Prevent Cavitation{1274}
1989/06/26 Use Upper Plug To Check Oil Level In Pump Drive Gearbox{3108,6600}
1989/06/26 Access Cover Kit Available For Rear Differential Cover{3258}
1989/06/26 Brace Plate Added To Reduce Vibration Of Coolant Bypass Tube{1380}
1989/07/17 Lubricate Front Axle Every 500 Hours Or Three Months{3282,7061}
1989/07/17 Axle Shafts With Larger Diameter Threads Require 1U8848 Installer{0722,3259,3278,4056}
1989/07/17 Steel Fittings Used On Air Hoses For The Cutter Clutch{8201}
1989/07/24 New Publication Available, "Metal Spray Guide"{0374}
1989/07/24 New Publication Available, "Ultrasonics Guide"{0374}
1989/07/24 Steering Diverter "Flip-Flop" Valve Now Drains To Steering Hydraulic Tank{3179,4107,4120}
1989/07/24 Tightening Idler Retention Bolts May Require Torque-Turn Method{4159}
1989/07/24 Longer Hinge Brackets Prevent Hoe-type Bucket Deformation{6503}
1989/07/24 New Lockup Clutch Disc Used In Torque Converter{3102}
1989/07/24 New Hydraulically-Actuated Belly Guard Available As An Attachment{7151,7153,7154,7158,7182,7185}
1989/07/24 Use Correct Grade Shear Bolt For Rotor Drive{5632}
1989/07/24 Check The Radiator Fan Spider Assembly When Doing Yearly General Maintenance{1356}