1999/05/01 Caterpillar

New Turbocharger Supports Help Prevent Watercooled Exhaust Manifold Cracking{1059,1052}

Usage:

3516 (29Z) Marine;
3516 (25Z) Marine Auxiliary Engines

Description of Change: A new turbocharger support group is used on the listed engine models. The supports in this new group connect the turbocharger turbine housings to the engine exhaust outlet casting. Without these supports, turbocharger vibration can lead to cracks in the weld joint between the steel outer shell and the casting of the watercooled exhaust manifold. The supports help eliminate vibration, so that the manifold weld joint will not crack.

Adaptable To: The new 162-7694 Turbocharger Support Group is effective with 3516 (29Z1338) Marine Engines and 3516 (25Z6379) Marine Auxiliary Engines. Parts in the 162-7694 Turbocharger Support Group are identified in the chart and the illustration.

(REAR VIEW OF ENGINE SHOWN) Identification of components in the 162-7694 Turbocharger Support Group.

Caterpillar Information System:

1999/05/01 New Breakout Harness{1559}

1999/05/01 Use 125-5597 Mounting Bar To Disassemble And Assemble Heat Exchanger{1379}

1999/05/01 New Stainless Steel Filler Neck Now Used In Radiator Groups{1353}

1999/05/01 New Block Cover Used{1201}

1999/05/01 New Design Of Cylinder Block And Main Bearings{1201,1203,1224}

1999/05/01 Cold Start Advance Solenoid Available{1272,1250}

1999/05/01 Use 157-3722 Driver To Remove And Install Engine Valve Guides{0703,1104}

1999/04/01 New Control Panel Films Show That SR4B Generators Are Not To Be Wired In The Delta Configuration{7557,7566}

1999/04/01 Updated 133-6350 EMCP II Generator Set Control Group Corrects Hourmeter Programming and Spare Fault Operation{4490}

1999/04/01 Special Instruction, REHS0345-01, "Generator Service Literature Index" Is Available{4450}

1999/04/01 Improved Data Logger Feature For Customer Communication Module{1926}

1999/04/01 New 155-5175 AC Current Probe For Generator Sets Now Available{1400,4450}

1999/05/01 New Basic Cylinder Head Group Used In 3500B High Speed Commercial Engines{1100,1103,1105}

1999/05/01 New Flywheel Housing Assembly Available{1157}

1999/05/01 Changes To High Pressure Gas Regulator Assembly Provide Improved Response{1270,1283}

1999/05/01 New High Pressure Air/Fuel Ratio Control (AFRC) Actuator Available For Operations In Wet Locations {1278}

1999/05/01 New Service Tool And Procedure To Test Detonation Sensor For Proper Performance{1559}

1999/05/01 Updates Available To Eliminate False Detonation And "No Magneto Interface" Nuisance Shutdowns{1900,1901}

1999/05/01 New Carbon Monoxide (CO) Emission Levels For Natural Gas Engine Applications{0376}

1999/05/01 New Manifolds Used In Exhaust Manifold Group{1059}

1999/05/01 New Silencer For 3600 Diesel Engines{1087}

1999/05/01 Center The Rocker Arm Shaft Assembly During Installation Of The Valve Rocker Arm Group{1102,1112,1121,1123,1208,1209}

1999/05/01 New Gaskets And Ignition Body Assembly Used In Prechamber Groups To Improve Sealing{1106}

1999/05/01 Do Not Reuse Connecting Rod Nuts On G3600 Engines{1218}