Turbine Housing For Turbocharger Is Stronger{1052}
Usage:
3412 Industrial Engines
Description of Change: The material in the turbine housing for 6N1616 and 7N804 Turbocharger Groups is changed. The new material will keep its strength better at high temperatures. Some of the former turbine housings cracked at high temperatures. The new turbine housing will prevent this type of failures.
Adaptable As: Direct replacement. The new parts were used in 3412 Engines with Serial Numbers 38S1316-up.
Caterpillar Information System:
1978/01/16 New Turbine Housings Are The Replacement For Three Former Turbine Housings Used On Schwitzer Turbochargers{1052}
1978/01/16 Tolerance Added To Valve Clearance Specifications{1105,0374}
1978/01/16 Improved Front Pulley And Damper Groups Use New Damper Adapter With Larger Diameter Bolt Circle For Pulley Bolts{1205}
1978/01/09 Improved Water Shield For Exhaust Manifold{1067}
1978/01/09 Inner Member Of Caterpillar Coupling Must Be Restrained If The Connection To The Inner Member Is Removed{3252}
1978/01/09 5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster{0621,1216}
1978/01/09 Improved Seal Used Between Impeller And Bearings On Water Pump Shaft{1361,1371}
1978/01/09 Service Tip: Use Caution When Hydraulically Operated Implements Must Be Lifted With A Hoist While The Engine Is Stopped{5050}
1978/01/09 Improved Water Pump Group Now Used{1361}
1987/12/21 New or Updated Drive Train Information Available In Guidelines For Reusable Parts{0374}
1987/12/21 New Gerotor Pump Group Used In 3161 Governors{1264}
1987/12/21 New Suction Bell Assemblies, Bolts, And Washers Used In Sump Oil Lines Groups{1307,1315,1304}
1978/01/16 Improved Gasket Prevents Oil Leakage From The Governor{1264}
1978/01/23 Design Of Governor Control Linkage Changed; Less Force Is Needed To Move The Accelerator Pedal{1265,1269}
1978/01/23 Change In Design Of Engine Governor, Fuel Injection And Transfer Pump Groups, And Fuel Ratio Control Groups{1264,1278,1286}
1978/01/30 Valve Damage Can Be Caused By Short Intervals Of Engine Operation In Very Cold Temperatures{1105,1208}
1978/01/30 Oil Strainer (Screen) Added To Turbocharger Thrust Bearing{1052,1053}
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 Stronger Front Support Assembly{1153}
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}
1978/02/06 Smaller Quantity Of Oil Now Used In Engine Oil Pan; Prevents Contact Between Crankshaft And Oil{1318}
1978/02/06 Successful Engine Service-3208 Engine Booklet Is Available{1000}
1978/02/06 Attachment Groups Put Corrosion Inhibitor Directly Into Cooling System{1350}
1978/02/06 New Water Temperature Regulator Opens At 180°F (82°C){1350,1355,7304}