Material Changed In Exhaust and Inlet Valves{1105}
Usage:
3500 Family Of Engines
Description of Change: A different valve is now used for the exhaust and inlet in the above models. The new valve has no cobalt in the head material because cobalt is becoming scarce.
Adaptable To: The new 7C6217 Exhaust and Inlet Valve is a direct replacement for the former 4W1300 Exhaust and Inlet Valve which is canceled.
Caterpillar Information System:
1987/04/20 Serviceable Parts For New Fuel Ratio Control; Pressurize Control To Set Rack On 3406B Engines In Driltech Drill Rigs{1257,1258,1264}
1987/04/20 New Pipe Used Between Turbocharger And Aftercooler; Improved Turbocharger Compressor Housing Has Two Retaining Bolt Holes{1050,1061,1079}
1987/04/13 Initial Start Of Engine Using An EGB29P Governor/Actuator After Filling With Oil{1264}
1987/04/13 Checking Injector Synchronization On Engines Equipped With New 11.0 mm Injectors{1290}
1987/04/06 Longer Bolts With Spacers Now Used On Exhaust Manifolds{1059}
1987/04/06 New Idler Shaft And Sealing Washers Used In Front Gears And Accessory Drives{1206,1207}
1987/04/06 Rerate Plates And 4W5140 Engine Information Plate Available For Use When Rerating 3406B (PEEC) Truck Engines{0782,1250}
1987/04/06 Engine Identification Plate Information For 3406B (PEEC) Truck Engines{0782,1250}
1987/04/06 Improved Governor Performance{1264,1250}
1987/04/06 Stop Engine If There Is A Turbocharger Bearing Failure{1052,1318}
1987/03/30 Oversize Piston Ring Seal Available For Clutch Group {3302,3300}
1987/03/30 Salvage Of Cylinder Heads By Using Oversized Valve Guides And Valve Inserts {1104,1103}
1987/04/20 Fuel Injection Timing Adjustment{1250}
1987/04/20 Improved Fuel Priming Pump Used{1258}
1987/04/20 Use Improved Heat Start Switch{1416}
1987/04/20 Moisture Cover Available For Start Switches{1416,1424}
1987/04/20 Microfiche Library Cross References Caterpillar Part Numbers With Expanded Product Line Part Numbers{7567}
1987/04/20 New Service Tools Available{0600}
1987/05/04 Products Equipped With Diagnostic Connectors Require Less Time For Electrical Troubleshooting{1400}
1987/05/04 Alternator "R" Terminal Wire Assembly Available For Wiring Harness Repair{1408}
1987/05/04 Alternator/Generator Output Test On The Engine{1401,1404,1405,1406}
1987/05/04 Testing The Starter On The Engine{1401,1450}
1987/05/04 New Rear Crankshaft Seal Groups Have Longer Service Life{1161,1202}
1987/05/11 Three Electrical And Electronic Training Aids Now Have Caterpillar Part Numbers Instead Of Form Numbers {0115}