Improved Gasket Prevents Oil Leakage From The Governor{1264}
Usage:
D348, D349, D379, D398, D399, G379, G398, G399 Engines;
D9H, 641B, 650B, 651B, 657B, 660B, 666B, 776, 772 Tractors;
594H Pipelayers;
773, 777 Truck;
992 Loaders
Description of Change: A gasket made of acetal resin is now used on the oil pressure regulating valve assembly for the governor used on the above engines and machines. Also, on 6.25" Bore "V" Engines this same gasket is used with the 7L8709 Plug Assembly in the governor group. The new gasket will stop oil leakage better than the former gasket which was made of copper.
Location of new gasket.
Adaptable As: Direct replacement for the former gasket in this application.
Caterpillar Information System:
1978/01/16 Turbine Housing For Turbocharger Is Stronger{1052}
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}
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}
1978/02/06 Probable Causes Of Low Fuel Delivery During Testing On Fuel Injection Test Benches{0650,1250}