1996/02/16 Caterpillar


New Turbocharger Wash Water Lines Groups Used{1052}

Usage:


3606 (8RB),
3608 (6MC),
3612 (9RC),
3616 (1PD) Engines Operating On Heavy Fuel

Description of Change: New turbocharger wash water lines groups are used on these engines. The new water lines groups will help reduce valve congestion and reduce water tube breakage. New exhaust manifold groups are used with the new turbocharger wash water lines group. The only difference between the new and former exhaust manifold groups is the last manifold section (6 or 8 cylinder engines) or sections (12 or 16 cylinder engines) before the turbocharger. These new exhaust manifolds have larger diameter holes [18.0 mm (.71 in) versus 7.0 mm (.28 in)] where the turbocharger wash water is injected into the exhaust.

Adaptable To: Illustration 1 and Chart A identify the components of the new 126-3566 Turbocharger Wash Water Lines Group for 3606 Engines. If the new water lines group is installed, the water injection ports in the 7E-8295 Pipe and the 7E-8293 Manifold (parts of the 6I-4946 Exhaust Manifold Group) must be enlarged from a diameter 7.0 mm (.28 in) to 18.0 mm (.71 in) and tapped with 3/4- 14 NPTF thread.


Illustration 1. Identification of components in the new 126-3566 Turbocharger Wash Water Lines Group.

Illustration 2 and Chart B identify the components of the new 126-3576 Turbocharger Wash Water Lines Group for 3608 Engines. If the new water lines group is installed, the water injection ports in the 7E-9619 Manifold (part of the 6I-4947 Exhaust Manifold Group) must be enlarged from a diameter 7.0 mm (.28 in) to 18.0 mm (.71 in) and tapped with 3/4- 14 NPTF thread.


Illustration 2. Identification of components in the new 126-3576 Turbocharger Wash Water Lines Group.

Illustration 3 and Chart C identify the components of the new 126-2637 Turbocharger Wash Water Lines Group for 3612 Engines. If the new water lines group is installed, the water injection ports in the 4P-0435 Manifold, 4P-0436 Manifold, 4P-0437 Pipe, and 4P-0438 Pipe (parts of the 6I-4948 Exhaust Manifold Group) must be enlarged from a diameter 7.0 mm (.28 in) to 18.0 mm (.71 in) and tapped with 3/4- 14 NPTF thread.


Illustration 3. Identification of components in the new 126-2637 Turbocharger Wash Water Lines Group.

Illustration 4 and Chart D identify the components of the new 125-2420 Turbocharger Wash Water Lines Group for 3616 Engines. If the new water lines group is installed, the water injection ports in the 4P-3047 Manifold and 4P-3048 Manifold (parts of the 6I-4949 Exhaust Manifold Group) must be enlarged from a diameter 7.0 mm (.28 in) to 18.0 mm (.71 in) and tapped with 3/4- 14 NPTF thread.


Illustration 4. Identification of components in the new 125-2420 Turbocharger Wash Water Lines Group.

Caterpillar Information System:

1996/02/16 New Drive Gear Used In Auxiliary Pump Group{1206}
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}
1996/02/16 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}
1996/03/19 Replacement Of Turbocharger Nozzle Ring Bolts{1052}
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