1982/02/22 Caterpillar

New Main Bearings And Connecting Rod Bearings Have Thicker Layer Of Surface Material{1230,1203,1219}

Usage:

D379, D379B, D398, D398B And D399 Industrial And Marine Engines And G379, G398 And G399 Natural Gas Engines

Description of Change: New main bearings and connecting rod bearings, which have a thicker surface material, are used in the above engines. The lead-tin layer has been increased in thickness to 0.020 mm (.0008") - 0.030 mm (.0012") from 0.008 mm (.0003") - 0.020 mm (.0008").

The thicker layer gives the bearing the ability to better adjust to the crankshaft journals and give longer service life than the former bearings.

Adaptable As: The new 8N7764 Main Bearings are direct replacements for the former 2N7048 Main Bearings which are canceled. The new 8N7769 Rod Bearings are direct replacements for the former 4L3763 Rod Bearings which are canceled. These are standard size bearings.

Caterpillar Information System:

1982/02/22 Use The Correct Governor For Parallel Applications{1289,1264}

1982/02/22 New Poppet Valve Will Decrease Chatter{3313}

1982/02/22 Improved Bearing Used In Rear Power Takeoff Groups{3055}

1982/02/22 Torque/Pressure Conversion Table For 6V200 Hydraulic Wrench{0614,0623}

1982/02/15 Stronger Spanner Wrenches Now Available{0612,0613}

1982/02/15 New Fuel Nozzle Adapter Assembly Used{1106}

1982/02/15 New Camshaft Has Improved Profile (Shape) Of Exhaust Cams{1210}

1982/02/15 Hose Assembly Moved To A New Position{1274}

1982/02/15 New 6V4810 Tool Group Used To Service Vehicles Equipped With VE (Vehicular Environmental) Series Electrical Connectors In Electrical Harness{0610,0620}

1982/02/08 Use Microfiche Libraries For Up-To-Date Information{0374}

1982/02/08 New 6V4818 Driver Available To Install Rack Bearings In Fuel Injection Pump Housings{0622}

1982/02/08 The Service Publications Information Feedback System{0374}

1982/02/22 Use A Magnetic Chuck To Hold Parts On Work Bench{0626}

1982/02/22 Engine Storage; Engine Start-Up After Storage{1000}

1982/02/22 Use 6V6035 Hardness Tester On Crankshafts{0651,1202}

1982/02/22 New Idler Shaft Used In Fuel Transfer Pumps{1256}

1982/03/01 Brass Plug Used To Prevent Corrosion{3320}

1982/03/01 New Gasket Used In Governor And Fuel Injection Pump Group{1259,1286}

1982/03/01 New Marine Gear Groups Have New Clutch Plates{3302}

1982/03/08 New Double-Wall Fuel Injection Lines Group And Fuel Drain Group Available As Attachments For Protection Against Fuel Leakage{1252,1254,7400}

1982/03/08 Reconditioning of Bridge Wear Seat Is Permitted; Will Prevent Bridge Replacement When Not Necessary{1100}

1982/03/08 Heavy Duty Air Cleaner Available, With Precleaner And Automatic Dust Ejector{1051,1055,1061,1062}

1982/03/08 New Adapters And O-Ring Seals Used In Aftercooler Group{1063}

1982/03/08 Correct Lubrication Procedure Will Prevent Damage To Fan Drive{1359,0374,0375}