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}
1994/08/22 New Fuel Priming Pump And Improved Gasket Used{1258}
1994/08/22 Lubrication Change On Twin Disc Power Take-Off's (PTO's){3055}
1994/08/15 Switches With Screw Terminal And Sure Seal® Connector Replaced By Switches With A DT Connector{1400,7400}
1994/08/08 SOS Allowable Soot Level Changed{1318}
1994/07/11 Different Fuel Filter Available To Prevent Premature Wear On Fuel Injection Pump Plungers And Barrels{1261,1251}
1994/07/04 New Cylinder Head Gasket, Spacer Plate And Head Bolts Used; New Cylinder Liner Projection Measurement Method; New Cylinder Head Torque Sequence; Improved Coolant Flow (Cylinder Heads) {1124,1221,1216,1101}
1994/06/27 New Assembly Procedure For Hydraulic Pump Groups With Double Shaft Seals And A Weep Hole Between The Seals Helps Prevent Contamination Through The Weep Hole{5073}
1994/06/20 Installation Procedure For 1R-0716 Engine Oil Filter{1318}
1994/05/30 Three And Five Piece Wheel Rims Reduce The Possibility Of The Tire Bead Not Seating Correctly{4209,4202}
1994/05/23 Date Code On 7000 Series Fuel Injection Nozzles; New Seals Used In 7000 Series Fuel Injection Nozzles{1254}
1994/09/05 New Water Seals Used In Cylinder Head Assemblies{1124}
1994/09/12 Improved Fuel Pump Bonnet Seal Has Better Heat Resistance {1251}
1994/09/19 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant{1395}
1994/09/26 Caterpillar Legendary Service Literature Catalog SELD0811 Updated{0374}
1994/09/26 Arc Suppressors Improve Life of Air Conditioner Thermostatic Switch{7337}
1994/09/26 Exhaust Dust Ejector Operation{1055,1068}
1994/10/03 Oversize Fuel Pump Drive Idler Shaft Available To Salvage Cylinder Block{1206}
1994/10/17 Radio Kits For Retrofitting Machines{7300}
1994/10/31 Using The Correct Air Conditioner Compressor Oil{1802,7320}
1994/10/31 Verification of Connecting Rod Eye Bushing Retention When Overhauling Engines{1218}
1994/12/05 New Muffler Bracket Improves Muffler Support{1062}
1994/12/12 Caterpillar Hose Press And Tool Usage{5057,0684}