1996/02/16 Caterpillar

New Drive Gear Used In Auxiliary Pump Group{1206}

Usage:

3516 (4MJ, 5MJ, 29Z) Marine Engines

Reference: Engine News, July 1995, Page 5, "New Auxiliary Pump Group Used".

Description of Change: A new drive gear with a thicker flange and increased number of mounting bolts is being used in the Auxiliary Pump Group. The new drive gear provides increased service life.

Adaptable To: The new 122-3205 Drive Gear is a direct replacement to the former 4W-6675 Drive Gear in the 9Y-5710 Auxiliary Pump Group.

The new 122-3205 Drive Gear has a thicker flange and requires the use of (eight) longer, 1A-2029 Bolts in place of the former and shorter OL-1351 Bolts.

The new 122-3205 Drive Gear and 1A-2029 Bolts should be exchanged with the former parts when doing repairs or when changing to the 124-0111 Auxiliary Pump Group.

Caterpillar Information System:

1996/02/16 Slip In Coupling Used Instead Of Bellows Assembly In Turbocharger Group To Improve Serviceability{1061,1065}

1996/02/16 Record Turbocharger Serial Number On Warranty Claims{1052}

1996/02/16 Phosphate Coating Added To Camshaft Lobes{1210}

1996/02/16 New Brackets Help Prevent Damage To Engine Fuel Injection Lines Groups{1252}

1996/02/16 New Material Used In O-Rings And Optional New Block Side Cover Replacement{1201}

1996/02/16 Air Filter Indicator No Longer Provided{7452}

1996/02/16 New Cylinder Head Injector Sleeve Used In Both Mechanical Unit Injection (MUI) And Hydraulic Electronic Unit Injection (HEUI) Engines{1125}

1996/02/16 Lubricant Used On Cylinder Head Bolts Changed{1100}

1996/02/16 Fuel Injector Sleeve Replacement Tooling{0703,1125}

1996/02/16 New Engine Information Plates Require More Information{1000}

1996/02/16 Closed Engine Crankcase Breather System Maintenance And Repair {1317,1107}

1996/01/17 New Engine Cylinder Liner Available {1216}

1996/02/16 New Turbocharger Wash Water Lines Groups Used{1052}

1996/02/16 New Valve Rocker Arm Assembly And Rocker Arm Adjusting Screw Used{1123}

1996/02/16 New Cylinder Liner And Cylinder Liner Sleeve Help Prevent Carbon Buildup Around Piston Top Land{1216}

1996/02/16 New Oil Temperature Regulator Lowers Normal Engine Oil Operating Temperature{1330}

1996/03/19 Possible Sources of High Crankcase Blowby From Breather Tube{1317}

1996/03/19 Parts Manual Fuel Filter Lines Group Illustration Corrections{1262}

1996/03/19 Fuel Injection Pump Barrel Sealing Face Reconditioning{1251}

1996/03/19 Improved Magneto Group Includes O-Ring Seal Groove On Mounting Face To Help Prevent Oil Leaks{1552}

1996/03/19 Troubleshooting Data Sheet For Gas Engines{1000}

1996/03/19 New Camshaft Kits Available{1210,1100,1108}

1996/03/19 New Auxiliary Water Lines Group (Fresh Water - Aftercooler) Provides Improved Access For Servicing The Number Six Cylinder{1380,1063}

1996/03/19 New 4C-9528 Tensioning Group Available To Gang Together Four 8T-0895 Hydraulic Cylinder Groups For Tensioning Cylinder Head Studs{0703}