Powdered Metal Valve Guides Provide Increased Service Life{1104}
Usage:
3406 ( 4FD ) Spark-Ignited Engines
Description of Change: Powdered metal valve guides are used in the cylinder head assembly. The powdered metal valve guides provide improved wear properties.
Adaptable To: The 7E3413 Valve Guide is effective with first production.
NOTE: The inside diameter of the assembled valve guide is to be 9.487 ± 0.025 mm (.3735 ± .0010"). The guide is to be shrunk by means of reducing the temperature of the valve guide to acquire an interference fit. The reduced temperature needed is -62°C (-80°F).
Caterpillar Information System:
1990/07/23 Dimensions For Aluminum Washer{1221}
1990/07/23 Troubleshooting Forward Warning Horns That Will Not Work{7402}
1990/07/09 Solenoid Contacts May Corrode In 3T2648 Marine Starting Motor Group{1467,1453}
1990/07/09 New Seat Belt Group Increases Operator Comfort{7327,7312}
1990/07/02 What's Your Answer? {0113,5050}
1990/07/02 Magnetic Pins Available To Measure Spline Wear {5070,0762,0763,5058}
1990/07/02 Valve Lifters Can Be Removed Without Removing Cylinder Heads {1112}
1990/07/02 New Spark Plug Seal Used {1555}
1990/07/02 Procedure To Measure Cylinder Liner Projection On 3176 Truck Engines {1216}
1990/07/02 New Fuel Setting Screw Cover And Bolt {1257}
1990/07/02 Engine Rack Control Assemblies Improved {1257}
1990/07/02 Answers To Quiz In This Issue {0113,5050}
1990/07/23 Improved Turbocharger Bearing Kit Available For Parts Service{1053}
1990/07/23 Improvements Reduce Vibration To The Low Water Level Switch On Expansion Tanks{7422,1354}
1990/07/23 Bearing Information For SR 4 Generators{4471}
1990/07/30 New Pistons Used{1225,1214}
1990/07/30 New Throttle Shaft Bearing Sleeves Used In Governor Housing Assembly{1365}
1990/08/06 Coolant Loss In 3406B Truck Engines{1395,1355,1100,1124,1353,1216}
1990/08/06 New Rotary Solenoid (Brushless Torque Motor) Used In PEEC Engines{1909}
1990/08/06 Rotor Shaft Length Changed{4457,4472}
1990/08/06 New Caterpillar Parts Identification Label{7567}
1990/08/13 Spacer Available To Eliminate Cracks On Ignition Coil Mounting Bracket{1554}
1990/08/13 Effective Dates, Serial Numbers And Features OF PEEC Personality Modules{1900,1902}
1990/08/13 Changes To Exhaust Manifold Expansion Sleeves And Bolts{1059}