1999/05/01 Caterpillar

New Stainless Steel Filler Neck Now Used In Radiator Groups{1353}

Usage:

3406 (4PM, 2WB, 4JK, 4RG, 1LS, 4ZR, 8FS, 75Z, 9ES, 9NN),
3408 (2BG, 78Z),
3412 (81Z, 2WJ, 4BZ) Generator Set Engines

Description of Change: A new stainless steel filler neck is now being used in certain radiator groups. The steel or brass filler necks could corrode thus causing the coolant to become black and contaminated. If this condition is present, it is recommended that the steel or brass filler neck be replaced. However, if the filler neck is made of steel, the top tank assembly must be replaced. This is necessary because of the damage inflicted to the top of the radiator tank when the steel filler neck is removed.

There are two ways to identify if the filler neck is stainless steel or regular steel. First, the stainless steel filler necks were first used in February 1998. Secondly, stainless steel filler necks have a low attraction to a magnet whereas regular steel has a strong attraction to a magnet.

Adaptable To: The new stainless steel 6L-9849 Neck (Filler) is in the 6N-7033 Tank Assembly (Radiator Top). This top tank radiator assembly is in the 8N-4885, 8N-4880, and 115-9323 Radiator Groups on the above machines.

Caterpillar Information System:

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}

1999/04/01 Protection From Paint Is Required For The G3600 Hydraulic Actuator (Hydrax) Shaft{1909,7581}

1999/04/01 New Cover And Plate Assembly Used In Oil Level Contactor Groups To Help Resist Vibration Damage{1326,7450}

1999/04/01 Heinzmann Wastegate Actuator Relocated{1057}

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

1999/05/01 New Breakout Harness{1559}

1999/05/01 New Turbocharger Supports Help Prevent Watercooled Exhaust Manifold Cracking{1059,1052}

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}