1985/03/01 Caterpillar


New Drive Coupler Kit Used On Altronic Magneto

Usage:


G3304, G3306, G342, G379, G398, G399 Engines Equipped With Altronic Magnetos

Description of Change: A new drive coupling is used in the Altronic magneto group on the above engines. The new drive coupling is made from a different material and gives improved service life. The former drive coupling was affected by engine heat. Wear of the former drive coupling affected engine timing and performance.

Adaptable As: The new 7W4130 Magneto Coupler Kit (new roll pin and drive coupling) is a direct replacement for the former 7W1403 Magneto Coupler Kit which is canceled.

NOTE: Always use a new 6L5270 Gasket when installing a new coupler kit.

The new 7W4130 Magneto Coupler Kit is in use as shown in the chart.


7W4130 Magneto Coupler Kit.

Caterpillar Information System:

1985/03/01 Use The Correct Oil In Natural Gas Engines
1985/03/01 New Cooling System Temperature Regulator Available
1985/03/01 Bleed Holes On Parts Service Cylinder Heads
1985/03/01 New Pressure Conversion Chart Available
1985/03/01 Do Not Weld On Painted Surfaces
1985/03/01 Exhaust Clamp Nut Now Serviced Separately
1985/03/01 Over Fueling Spring No Longer Used In Governor
1985/03/01 A New Book "Analyzing Diesel And Natural Gas Engine Valve Failures" Is Available
1985/03/01 New Service Tools Available
1985/02/01 1985 Customer Training Available At Caterpillar Dealers (North America)
1985/02/01 Tighten Bolts To Correct Torque In 3161 Governor
1985/02/01 Only The External Needle Valve Can Be Adjusted On Woodward EG3PC Or EG10PC Actuators
1985/03/01 New Crankshaft Seal Groups Used On More 3400 Series Engines
1985/03/01 Increased Preload Used In Air Shutoff Actuators
1985/03/01 New Transmission Control Valve And Pressure Relief Valve Are Used With High Flow Oil Pump
1985/03/01 Input Shaft And Flange Available As An Assembly; Makes Alignment Easier
1985/03/01 Dowtherm 209 Full-Fill Coolant
1985/03/01 Cross Link Between Fuel Racks Has Smoother Surface
1985/03/01 New Air Cleaner Element Creates Less Restriction
1985/03/01 Installation Of Heli-Coils In Holes With Damaged Threads
1985/04/01 Check Cylinder Block And Head Flatness Whenever There Is A Head Gasket Failure
1985/04/01 Several Types Of Automatic Voltage Regulators (AVR) Used In SR4 Generators
1985/04/01 Crankcase Explosion Relief Valve Kit Available
1985/04/01 Changes To Exhaust Manifolds Help Prevent Broken Studs
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