1978/01/30 Caterpillar


Oil Strainer (Screen) Added To Turbocharger Thrust Bearing{1052,1053}

Usage:


D348 Vehicle Engines;
D349 Industrial, Marine and Truck Engines;
D353 Industrial and Marine Engines;
D379 Industrial Engines;
D398, D399 Industrial and Marine Engines;
3306, G333C, G342C, G348, G379, G398, G399 Natural Gas Engines;
641B, 650B, 651B, 657B, 660B, 666B, 772 Tractors;
773 Trucks Equipped With Schwitzer Models 4HD, V4HD, 4HF, 4MD, V4MD, and 4ME Turbochargers, and Earlier Models for Which These Are Used As a Replacement

Description of Change: A new thrust bearing assembly is used in turbocharger cartridges for the above models. The new bearing assembly has a strainer (screen) to keep foreign material out of the oil passage. Formerly, some bearings were damaged when the oil passage was closed by foreign material in the oil, especially particles of gaskets removed during service work.

Adaptable As: Direct replacement. The new 7N3762 Bearing Assembly can be installed in place of the former 2S1186 Thrust Bearing, which is canceled.

Caterpillar Information System:

1978/01/30 Electric Fuel Pressure Gauge Now Used{7456}
1978/01/30 Rectifiers And Fuses Added To Transmission Control Wiring Increase Switch Service Life{1408,3168,3172,3173,3174}
1978/01/30 Improved Electrical Wiring Has A Separate Fuse For Each Circuit{1408}
1978/01/30 Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30 Additional Parts Needed To Install 54 Winch On Tractors Equipped With Steel Fuel Lines On The Fuel Tank{5163}
1978/01/23 Stronger Guard Assemblies For Scraper Bowl{6201}
1978/01/23 New Torque Converter Has Several Improvements{3101}
1978/01/23 Change In Design Of Engine Governor, Fuel Injection And Transfer Pump Groups, And Fuel Ratio Control Groups{1264,1278,1286}
1978/01/23 Rear Counterweights Are Now Made Of Steel{7056}
1978/01/23 Changes Made To Scraper Lubrication Films{7557,6229,6230,6239}
1978/01/16 Stronger Link Assembly For Bucket Control Group; Longer Grease Fittings Make Lubrication Easier{6107}
1978/01/16 Improved Mounting Plate For Elevator Lines Manifold{6207,6209,6210,5057}
1978/01/30 New Spring Used In Belt Tightener And/Or Fan Drive Groups{1358,1359}
1978/01/30 New Water Pump Cover Has A Baffle And Wall To Send Coolant Flow From Bypass Line Directly Into Water Pump{1361}
1978/01/30 Breather For Transmission Case Now Made Of Metal{3150}
1978/01/30 Do Not Change Factory Fuel Or Speed Settings On Truck Engines Unless New Settings Are Certified Under Applicable EPA Regulations{0336,0337,1257}
1978/01/30 Retaining Ring Of A New Design Now Used In Torque Converter Group{3100}
1978/01/30 Air Line For Air Compressor Governor Now Connected To Outlet For Wet Air Tank{4272,1065,4278}
1978/02/06 Silicone Sealant Is Now Used To Keep Water Out Of The Steering Clutch Case{4059,4100,4106,4115}
1978/02/06 Adjustment Of Track Tension On Machines With One Carrier Roller Per Side{4150}
1978/02/06 Add New Measurement And Identification To FT904 Backlash Indicator{0653,3258}
1978/02/06 Stronger Clutch Housing Used In Variable Capacity Torque Converter{3102}
1978/02/06 Successful Engine Service-3208 Engine Booklet Is Available{1000}
1978/02/06 New Water Temperature Regulator Opens At 180°F (82°C){1350,1355,7304}
Back to top
The names Caterpillar, John Deere, JD, JCB, Hyundai or any other original equipment manufacturers are registered trademarks of the respective original equipment manufacturers. All names, descriptions, numbers and symbols are used for reference purposes only.
CH-Part.com is in no way associated with any of the manufacturers we have listed. All manufacturer's names and descriptions are for reference only.