1979/08/06 Caterpillar

Changes Made To 8S2243 And 8S4613 Wrenches Used On Fuel Injection Pumps{0612,1251}

Usage:

Description of Change: 3/4"-16 threads have been added to the inside of the 8S2243 and 8S4613 Wrenches. If, after installation or removal of a nut, the wrench is difficult to remove, a 3/4"-16 bolt can be installed in the wrench. The bolt can be used to loosen the wrench before the retaining nut is completely removed from the pump housing.

The 8S4613 Wrench also had a .030" (0.76 mm) chamfer removed from the end of the splines and the splines were made longer. The longer splines make the wrench stronger for applications where the retaining nut is hard to remove. Removal of the chamfer gave more stability to the wrench during use. This prevents damage to the splines.

If desired, former 8S4613 Wrenches can be ground to remove the chamfer from the end of the splines. Clean each spline after the chamfer is removed.

Caterpillar Information System:

1979/08/06 Front Accessory Drive Group Changed; New Drive Parts For Fuel Transfer Pump{1256,1206}

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 Use Correct Installation Procedure For Clutch Pilot Bearing In Rear Power Takeoff{3055}

1979/08/06 New Tools Are Available For Gasket Removal And Surface Reconditioning{0670}

1979/07/09 New Cylinder Liner Has Improved Design To Keep Liner Temperatures Lower{1216}

1979/07/09 New Shaft Assembly Used In Governor Group And New Coupling Assembly Used In Drive Group For Governor And Fuel Injection Pump{1264,1288}

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}

1979/08/13 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}

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

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

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

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

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

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