New Oil Cooler Bonnets Used On 3408 And 3412 Engines{1378,1354,1380}
Usage:
988B, 992C Loaders;
631D, 633D, 637D, 637D PP Tractors;
3408 Truck, Marine and Industrial Engines;
3412 Marine and Industrial Engines
Description of Change: New oil cooler bonnets are used on the 3408 and 3412 Engines in the applications shown above. The flange on the new oil cooler bonnets is .093" (2.36 mm) thicker than the flange on the former oil cooler bonnets. Because of the increased thickness of the flange, the spacer plate or block orifice and one of the two gaskets used with the former oil cooler bonnet is no longer needed.
Adaptable As: Direct replacement for the former parts as shown in the chart that follows. See the parts book for the water lines group or expansion tank group used on your engine.
Caterpillar Information System:
1979/04/23 Careful, Correct Installation And Maintenance Of Fuel Injection Lines Is Very Important To Prevent Possible Engine Damage, Fire And Other Problems{1252}
1979/04/16 90° Elbows On Quick Disconnect Couplers Make Installation Easier{0690}
1979/04/16 How To Extend The Service Life Of 1P5550 Fuel Cam Locking Tool Assembly{0654,1250}
1979/04/16 Testing And Adjusting Procedure For 5P4210 Modular Cab Tilting Cylinder And Valve{0620}
1979/04/09 During Installation Of Crankshaft Piston Ring Seals, Put Silicone Grease In The Groove And On The Seal{1160,1161}
1979/04/09 New Exhaust Valve Has Improved Three-Piece Construction{1105}
1979/04/09 Serial Numbers Used Instead Of Test Numbers On Power Shift Transmissions{3150,7557}
1979/04/09 Conversion Group Available To Install Woodward Governor On Engines Equipped With Mechanical Governor{1264}
1979/04/09 6V112 Repair Kit Available For Parts Service Of The 8H8558 Nut Spinner{0611}
1979/04/02 Stronger Output Shaft Now Used In 2N3909 Tachometer Drive Adapter{7462}
1979/04/02 Improved Fuel Priming Pumps Give Longer Service Life{1258}
1979/04/02 New Pistons And Timing Advance Unit Give Better Emissions Control And Easier Starts{1214,1272}
1979/04/23 Inspection Of Oil Pump After Long Periods Of Service Can Prevent Engine Damage{1304}
1979/04/23 Dowtherm Test Strips No Longer Available{0651,1350}
1979/04/30 New " Drive 6V94 Universal Joint Is Available{0612,1253}
1979/04/30 2P8316 Dowel Now Available For Parts Service{0652}
1979/04/30 The Service Life Of A Power Shift Transmission Is In Direct Relation To The Maintenance Of Its Lubrication System{3004,3179,3150}
1979/04/30 New Ring Gears Used In Flywheel Assemblies{1158}
1979/04/30 Seals (Double-Lip Type) Made Of Viton Material Are Now Used In Vickers Pumps Which Have Steel-Backed Bronze Plates Between Rotor And End Plates{5055}
1979/04/30 Improved Gasket Now Used Between The Flywheel Housing And The Cylinder Block{1157,1201}
1979/04/30 Liner Seat Insert Now Available{1217}
1979/04/30 New Design Exhaust Gasket Used In Air Lines Group{1061}
1979/05/07 New 6V116 Water Sleeve Removal Tool Is Available{0621,1101}
1979/05/07 New Hose Assembly Will Give Longer Service Life With High Oil Temperatures{3314}