New Shaft Used In Fan Drive Group{1359}
Usage:
3408 Engines Used In 768C Tractors and 769C Trucks;
3412 Engines Used In 772B Tractors And 773B Trucks
Description of Change: A new shaft is used in the fan drive group for the above engines. The new shaft is made with a new procedure that will give a longer service life than the former shaft.
Adaptable To: The new 8N5998 Shaft is used on 3408 Engines with Serial Numbers 48W7236-up and 3412 Engines with Serial Numbers 73W548-up. The former 8N5065 Shaft has been canceled.
Caterpillar Information System:
1979/10/22 Steel Shims Are Now Used To Adjust The Preload On The Front Wheel Bearings{4208,4200}
1979/10/22 Voltage Regulator Can Cause Variable Ammeter Indications{1410,1401,1405,1406,7467}
1979/10/22 New Connecting Rod Is Tapered In Piston Pin Area{1218}
1979/10/22 New Valve Rotator And New Oil Shield Are Available{1104,1105,1109}
1979/10/22 Size Of Glass Beads Is Important When Used To Clean Engine And Turbocharger Parts{0670,1052,1053,1077,1105,1214}
1979/10/22 More Studs Used To Hold Transmission To Bevel Gear Case{3064,3150,4059}
1979/10/22 Cold Temperature Starting Procedures For Air Compressor And Drill Engines{0374,1000,1450}
1979/10/22 New Coolant Temperature Regulator Housing And Vent Line Valve Give Better Control Of Engine Cooling; Conversion Kits Available{1380,1355}
1979/10/22 Bracket Modification Makes Oil Filter Changes On Transmissions Easier{3179}
1979/10/22 Use The FT1482 Stop Collar Assembly With The 1P4000 Line Boring Tool Group{0663}
1979/10/15 New Camshaft Housing Gasket Has Increased Resistance To High Temperature{1113}
1979/10/15 Engine Oil Viscosity Changed To SAE 10W/30 For Shipment From All U.S. Factories{1318}
1979/10/22 Different Thrust Bearing And Thrust Rings Now Used In Turbochargers{1052,1053}
1979/10/29 New--3208 Engine Maintenance Tips Wall Chart {0374,1000}
1979/10/29 New Top Piston Ring Has Plasma-Coated Face {1215}
1979/10/29 Use The 6V2034 Micrometer Adapter To Measure Lip Thickness Of Engine Valves {0653,1105}
1979/10/29 New Repair Kit Is Available For Service Of Hydraulic Jack {0642}
1979/11/05 Correct Installation Of Track Shoe Nuts{4170,4179}
1979/11/05 Two Plug Assemblies (Booster Cables) Are Available To Start Machines{1401,1453}
1979/11/05 Wider Connecting Rods Have More Bearing Area{1214,1218}
1979/11/12 Puller Studs Of Same Size Can Have Different Work Capacities{0621}
1979/11/12 New Air Cleaner Group Keeps Rain Out Of Cleaner{1051,1054}
1979/11/26 More Potting Material Now Used In 6N5906 Electric Service Meter{7480}
1979/11/26 Batteries Can Be Damaged If Too Much Vacuum Is Used During Electrolyte Fill{1401}