1993/01/18 Caterpillar

New Exhaust Manifold Group Will Help Reduce Vibration On Bellows {1059}

Usage:

3516 (4MJ) Marine Engines

Description of Change: A new exhaust manifold group is used. The new group includes an additional bracket on both the left and right manifold that will support the outlet bellow. This support will reduce vibration of the manifold outlet bellows. The reduced vibration will help prevent bellows failures.

Location of components in the new 6I4328 Exhaust Manifold Group. 6I4086 Bracket (1). 9X8285 Bolt (2). 4P2007 Spacer (3).

Adaptable To: The new 6I4328 Exhaust Manifold Group is a direct replacement for the former 9Y4599 Manifold Group. The new exhaust manifold group is in effect with 3516 Marine Engine 4MJ38.

The components identified in the illustration and chart can be added to the former 9Y4599 Exhaust Manifold Group on earlier engines to prevent bellows vibration.

Caterpillar Information System:

1993/01/18 New Grommets With Higher Temperature Capacity Used In Clamp Assemblies {1307,1052}

1993/01/18 New And Remanufactured Fuel Injector Reference {1290}

1993/01/18 Cylinder Pack Puller Groups Improved {0705,1239}

1993/01/18 Part Number References For 0R2818, 0R2819, And 0R3231 Remanufactured 3208 Truck Engines {0374}

1993/01/18 New Videotape "Detection of Air and Combustion Gases in the Cooling System" Available {0374,1350}

1992/12/21 New Bellows Assemblies Used In Turbocharger Groups{1052,1059}

1992/12/21 Modifying Former 2W8888 Rocker Arm Shaft For Use With New 8T7581 Rocker Arm Shaft Bolt{1102}

1992/12/21 New Cylinder Head Bolt Tightening Procedure{1100}

1992/11/30 New Cast Iron Deaerators Replace Former Aluminum Deaerators{1350}

1992/11/30 Procedure To Clean High Performance Marine Engine Air Filter{0374,1054}

1992/11/30 Procedure To Replace Cylinder Head Gasket{1124}

1992/11/30 New Fuel Priming Pump Kit Available{1258}

1993/01/18 New Cylinder Head Group Used To Help Reduce The Amount Of Oil On The Valve Stems {1102,1109,1104}

1993/01/25 New Connecting Rod Bearing Used In Piston And Rod Groups {1219}

1993/01/25 Special Instruction For Installing VR3 Voltage Regulator On SR4 Generators Now Available {4450}

1993/01/25 Drive End Bearing Service For 50/75 Amp Brushless Alternators {1405}

1993/01/25 Unit Injector Tip Seal Deterioration {1290}

1993/01/25 Check Engine Water Pump Impeller Face Clearance If The Engine Experiences Symptoms Of Overheating {1361}

1993/02/01 New 9U6101 Lower Pilot Reamer Group Available{0670,1125}

1993/02/08 Maintenance Tips For 6I0799 Exhaust Restrictor; Additional Spring Improves Performance Of 6I0799 Exhaust Restrictor{1119,1061,1088}

1993/02/15 Procedure To Determine Idler Height {4159}

1993/02/15 Aftercooler Core And Turbocharger Compressor Wheel Cleaning Interval {1317,1052,1054,1060}

1993/02/15 New Breather Group And Fumes Disposal Group Help Reduce Oil In Blow-By Fumes {1317}

1993/02/15 New Tank Assemblies Used In Expansion Tank Groups; New Pressure Cap; New Coolant Recovery System Available {1354,1392}