Remanufactured 3400 Cylinder Heads Now Use Intake And Exhaust Valves With Chrome Plated Valve Stems{1105}
Usage:
Caterpillar Machines Powered By 3400 Machine Engines
Description of Change: Remanufactured cylinder heads will be assembled with chrome plated valve stems. This change will provide longer valve life in severe applications.
Adaptable To: The new chrome plated part numbers are 108-5902 Intake Valve and 106-1111 Exhaust Valve. They will be used on all remanufactured 3406, 3408 and 3412 Cylinder Heads with date code of February 1994 (NMDR) or later.
NOTE: All Remanufactured 3400 Cylinder Heads with date code prior to that listed above will have valve part numbers as listed in the chart below.
Caterpillar Information System:
1994/09/05 Use Of 4C-4377 Stress Plate Group In 3114 And 3116 Cylinder Block Reconditioning{0672,0673,1201}
1994/09/05 Fan V-Belt Part Number Has Changed For Certain Models With The 3204 Engine{1357}
1994/09/05 New Plunger In Fuel Pressure Regulating Valve{1250}
1994/09/05 Air Cleaner Filter Screens Require Maintenance{1051}
1994/09/05 Improved Engine Door Hinge Used{7263}
1994/09/05 New Radiator Shroud and Support Bracket Improve Service Life{7272,1351}
1994/09/05 Fabric Suspension Cylinder Covers Are Now Used To Protect Cylinder Rods{7201}
1994/08/29 New Exhaust Manifolds, Longer Mounting Studs And Spacers Used In Exhaust Manifold Groups {1059}
1994/08/29 Oil Drain Assembly Improved To Reduce Thread Interference With Drain Plug {1302}
1994/08/29 Cylinder Head Bolt Tightening Procedure {1100}
1994/08/29 Description And Usage Of The Electronic Programmable Transmission Control II (EPTC II) {3168}
1994/08/29 Improved Automatic Retarder Control (ARC) {3121}
1994/09/05 New Water Seals Used In Cylinder Head Assemblies{1124}
1994/09/12 Procedure To Bleed And Charge The Rear Suspension {7213}
1994/09/12 New Spring On Fan Belt Tightener Provides Longer Service Life {1358}
1994/09/12 New Fuel Priming Pump Assembly Used In Fuel Priming Pump Group {1258}
1994/09/12 New Seals In Pump Fastener Group And Fuel Injection Pump Group Have Improved Heat Set Resistance {1251}
1994/09/12 Improved Fuel Pump Bonnet Seal Has Better Heat Resistance {1251}
1994/09/12 New Gasket Use In The Water Lines Group {1380}
1994/09/19 Special Instruction SEHS9567 Is Available For Installing Oil Baffles In The 6WD Transfer Gearbox To Prevent Overheating{3250,3011,3000}
1994/09/19 New Gasket Material Used To Seal Bearing Housing to Drum And Procedure To Check Flatness Of Drum Head{6605}
1994/09/19 Reinforcement Of Boom Lift Cylinder Bracket{6460}
1994/09/19 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant{1395}
1994/09/26 Caterpillar Legendary Service Literature Catalog SELD0811 Updated{0374}