New Shaft Assembly Used In Governor Group And New Coupling Assembly Used In Drive Group For Governor And Fuel Injection Pump{1264,1288}
Usage:
D353E Industrial and Marine Engines, D9H Tractors, DD9H Tractors and 594H Pipelayers
Description of Change: A stronger drive shaft assembly is used in the governor group, together with a stronger coupling assembly in the drive group for the governor and fuel injection pump on the above models. The new parts will have a longer service life. Failure of the shaft assembly and/or the coupling assembly causes loss of governor control.
Adaptable As: The new 8N4766 Shaft Assembly and the 8N4768 Coupling Assembly, used together, are a direct replacement for the former 4N2679 Shaft Assembly and 4N5077 Coupling Assembly which are canceled.
Caterpillar Information System:
1979/07/09 New Valve Cover Gasket Has Better Material{1107}
1979/07/09 Caution Label Added To 5P4150 Nozzle Testing Group{0651}
1979/07/02 Fuel Injection Line For Injection Test Bench Is Available From Caterpillar{0652,1250}
1979/07/02 Improved Engine Design Uses Cylinder Block With Spacer Plate And New Crankshaft Thrust Plates{1000}
1979/07/02 6V109 Torque Multiplier Available For Use With Hydraulic Cylinder Repair Stand{0614}
1979/07/02 To Prevent A Possible Change In The Fuel Rack Setting, A Specific Assembly Procedure Must Be Used To Tighten The Bolt On The Governor Stop Collar{1259,1257,1250}
1979/06/25 6V2010 Polishing Stone Available{0622}
1979/06/25 New Air Inlet Tube Gives Enough Room To Install A "Jake Brake"{1058,1119}
1979/06/25 Engine Front Support Now Machined To Prevent Possible Failure Of The Support Brackets For the Power Takeoff{1153,3055}
1979/06/25 New Water Pump Assemblies Use An Improved Seal Assembly{1361}
1979/06/25 6V183 Gasket Now Available For Parts Service To Use On 5P4150 Or 8S2242 Nozzle Tester{0651}
1979/06/25 Use Of 9S3265 Retaining Compound On Schwitzer Turbocharger Compressor Wheel Retainer Nuts{1052,1053}
1979/07/09 New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower{1216}
1979/08/06 New Tools Are Available For Gasket Removal And Surface Reconditioning{0670}
1979/08/06 Use Correct Installation Procedure For Clutch Pilot Bearing In Rear Power Takeoff{3055}
1979/08/06 When Timing The Engine, Be Sure The Timing Bolt Is Installed In The Correct Hole In The Flywheel{1156,1251,1281}
1979/08/06 Front Accessory Drive Group Changed; New Drive Parts For Fuel Transfer Pump{1256,1206}
1979/08/06 Changes Made To 8S2243 And 8S4613 Wrenches Used On Fuel Injection Pumps{0612,1251}
1979/08/13 Splash Shields Added To Caterpillar Fuel Injection Test Bench{0652}
1979/08/13 New Seal Used Under Retaining Bushing For Fuel Injection Pump Bonnet{1251,1253,1286}
1979/08/13 5P936 Liner Seat Insert Available For 6.25 Bore Engine Blocks With Counterbores{1217}
1979/08/13 6V14 Hydraulic Cylinder Group Now Available{0621}
1979/08/13 New 35-Ampere Alternator Used On Some Engines In Caterpillar Equipment{1405,1406}
1979/08/13 New Cylinder Head Gasket Has Smaller Diameter Cylinder Openings To Improve Location Of Combustion Seal Ring{1101,1201}