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:
1989/07/03 Use Same Torque For All Sizes Of Threaded Crown Hydraulic Cylinders{5100,7562}
1989/07/03 Air Conditioning Service Tooling{0757,0786,7320}
1989/06/26 New Connector With An Orifice Added To Fuel Injection Lines Groups To Help Prevent Cavitation{1274}
1989/06/26 Damper Groups Improved To Help Prevent Leaks Of Viscous Fluids{1205}
1989/06/26 Change Routing Of Heater Return Hose To Improve Heater Efficiency{7304,1361}
1989/06/26 Air Vent Line Improves Cooling System Performance{1395,1350}
1989/06/19 New Pistons Used With Two Keystone Compression Rings{1156,1205,1214,1215}
1989/06/19 New Seal Used In Auxiliary Water Pump Groups{1361}
1989/06/19 Special Instruction, "Battery Charging Rate And Time Tables," Available On Oil Resistant Paper{0374,1401}
1989/06/19 Identification Of Asbestos-Free Material{0353,0112,0648}
1989/05/29 "CXP Fluids" Are Now "Cat Fluids" {0645}
1989/05/29 Maintenance Inspection Of Emergency Shutdown Systems Required Every 1000 Hours {7400}
1989/07/10 New, Larger Vibration Damper Improves Wear Life{1205}
1989/07/17 PEEC Training And Diagnostic Training Program Available{0314,0372,1705}
1989/07/24 New Publication Available, "Metal Spray Guide"{0374}
1989/07/24 New Publication Available, "Ultrasonics Guide"{0374}
1989/07/24 Check The Radiator Fan Spider Assembly When Doing Yearly General Maintenance{1356}
1989/07/24 Subscription Service Available For ECAP And DDT Service Program Modules{0782,1705}
1989/07/24 Separate Grounding Of Throttle Limit Switch And Shutoff Solenoid Improves Component Reliability; New Throttle Limit Switch Used{1269,1155,1400}
1989/07/24 Shock Mounts Give Longer Life To 9F3099 Switch Assembly (Starter Relay){1426,1450}
1989/07/24 Engine Oil Coolers With New Rubber End Sheet Available For Parts Service{1378}
1989/07/24 Stronger Spacer Plate Prevents Cracking{1221,1350}
1989/07/24 Improved Control Rod Assembly Used In Fuel Injection Control Groups{1298}
1989/07/24 New Cylinder Head Gasket Kit Available{1101,1216}