1979/08/27 Caterpillar

Engine Oil Viscosity Changed To SAE 10W/30 For Shipment From All U. S. Factories{1318}

Usage:

All Caterpillar Products Except 3208 And Natural Gas Engines

The engine crankcase of all Caterpillar products except 3208 and Natural Gas Engines is to be filled with SAE 10W/30 oil at U. S. factories before shipment, except engine models which are drained for shipment. This change is in effect on the models shown in the chart, and will be in effect on other models soon. The Lubrication Notice fastened to the engine will show this change.

The API (American Petroleum Institute) classification of type CD is not changed. The SAE 10W/30, type CD oil can be used until the first oil change interval in temperatures between -10°F (-23°C) and 90°F (32°C). If oil must be added during this interval, use type CD oil with a viscosity of SAE 10W/30 if available, or see the Lubrication and Maintainance Instructions for the correct viscosity oil to use according to the atmospheric temperature. Be sure to use oil with an API classification type CD. This change in the original oil used at the factory has no effect on the basic lubrication instructions. Follow these instructions for oil change intervals, type and SAE grades of oil to use.

Caterpillar Information System:

1979/08/27 Hardened Washers And Increased Torque Are Now Used On The Bolts Which Fasten The Circle Drive Group To The Circle Drawbar{5207,6153}

1979/08/27 6V190 Clamp Is Available For Use On Sleeve Metering Fuel Systems{0626,1250}

1979/08/27 New Governor Housing Assembly Used In Governor And Fuel Injection Pump Group{1253,1264}

1979/08/27 Steering System Improvements Prevent Possible Damage To Steering Cylinder Sockets{4303,4304,4305,4322}

1979/08/27 New Seal For Precombustion Chamber Has More Resistance To Heat And Steam{1106}

1979/08/27 Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}

1979/08/20 New Rear Cover And Gasket Used On Water Pump{1361,1350}

1979/08/20 Turbocharger Bearings Are Now Available In More Different Sizes For Better Turbocharger Reconditioning{1053}

1979/08/20 Pump Failure Can Be Prevented{5070,5200}

1979/08/20 Flex Plate Kits Are Now Available For Vickers Vane-Type Hydraulic Pumps{5055}

1979/08/13 Sealant Now Used On Pipe Plugs At The Bottom Of The Oil Filter Base Assembly To Prevent Oil Leakage{1306}

1979/08/13 New Cylinder Head Gasket Has Smaller Diameter Cylinder Openings To Improve Location Of Combustion Seal Ring{1101,1201}

1979/08/27 New Rocker Arms And Rocker Arm Shaft Have Improved Lubrication{1102}

1979/08/27 New Design Thrust Plate Used In Crankshaft Group{1201,1202,1203}

1979/09/03 Use Caution To Prevent Damage To Plastic Check Valve In Hydraulic Oil Tank And Transmission Oil Tank Drain{5056,3177}

1979/09/03 Only One Dowel Pin Is Now Used To Hold The Thrust Bearing In The Correct Position{1053,1052}

1979/09/03 Follow Recommendations Given In Special Instructions For Modification Of Rollover Protective Structures (ROPS) At All Times{7323,7325}

1979/09/03 Important: Use Only 8N4029 Fan On 769C Trucks And 768C Tractors{1356}

1979/09/03 Quick Disconnect Coupling On Optional Modification Of 5P4150 Nozzle Tester Permits Faster Exchange Of Adapters{0651,1254}

1979/09/03 Improved Wire Assembly For Glow Plugs{1403}

1979/09/03 Improved Hardware Now Used To Fasten Front Suspension Cylinder To Frame{7201}

1979/09/10 Insulation Sleeve For 5P7360 Tach Generator Now Available {7462}

1979/09/10 Stronger Bolt Now Used With Exhaust Manifold {1059,1307}

1979/09/10 6V2055 High Vacuum Grease Gives Better Oil Seal {1052,1053,1077,0682}