Different Valves And Valve Seats Used In Remanufactured Cylinder Head Groups {1103,1105}
Usage:
G3408, G3412 Engines
Reference: Engine News, September 1993, Page 10, "New Chrome Stem Exhaust Valves Available".
New remanufactured cylinder head groups are available for the above engines. The new groups include inlet and exhaust valve seats with a 20.25 degree seat angle, and inlet and exhaust valves with a 19.25 degree face angle. This improves the heat transfer between the valve face and the valve seat. The result is increased reliability and extended service life. The new groups also include 9Y-9804 Inlet Valves and 101-8314 Exhaust Valves. The exhaust valves have chrome stems. Oversize valve seats with the 20.25 degree seat angle are available. The chart lists the new and former remanufactured cylinder head groups.
Caterpillar Information System:
1994/09/01 Longer Studs And Spacers Used To Retain Exhaust Manifolds {1059}
1994/09/01 New Turbocharger Increases G3412 Engine Performance {1052}
1994/09/01 New Fuel Priming Pump Assembly Used In Fuel Priming Pump Group {1258}
1994/09/01 Improved Fuel Pump Bonnet Seals Have Better Heat Resistance {1251}
1994/09/01 Tachometer Adjustment To Read Correct Engine RPM; Instrument Background Lighting {7451,7462}
1994/09/01 Use Of 4C-4377 Stress Plate Group In 3114 And 3116 Cylinder Block Reconditioning {0672,0673,1201}
1994/09/01 Cylinder Head Bolt Tightening Procedure {1100}
1994/09/01 Caterpillar Introduces New Long Life Heavy Duty Engine Coolant {1395}
1994/08/01 Lubrication Change On Twin Disc Power Take-Off's (PTO's){3055}
1994/08/01 Complete Fuel System Flushing{1250}
1994/08/01 New Valve (Gas Admission) Has Chrome Plated Valve Stem{1100,1250}
1994/08/01 Different Sealant Used In Air Start Lines Group{1050,1058}
1994/09/01 Remanufactured 3400 Cylinder Heads Now Use Intake And Exhaust Valves With Chrome Plated Valve Stems {1105}
1994/09/01 New Seals In Pump Fastener Group And Fuel Injection Pump Group Have Improved Heat Set Resistance {1251}
1994/09/01 New PSG Governor With Pneumatic Air Head Control Available {1264}
1994/09/01 New Gasket Provides Improved Sealing Between Air Compressor And Drive {1803}
1994/09/01 New Gears And Pipe Plugs In Auxiliary Drive Group {1150,1165}
1994/09/01 New Cylinder Liner, Spacer Plate, Spacer Plate Gasket, And Cylinder Head Gasket Used {1216,1221,1124}
1994/09/01 New Plunger In Fuel Pressure Regulating Valve {1250}
1994/09/01 New Gasket Used In The Water Lines Group {1380}
1994/09/01 Improved Knock (Detonation) Sensor Group Replaces Detonation Sensor {1559}
1994/09/01 New Operation And Maintenance Videos Available {0374}
1994/09/01 Turbocharger Turbine Nozzle Reusability Information {1052}
1994/09/01 Use Thread Lock On Bolts That Fasten Aftercooler Housing To Cylinder Block {1063}