Obsolete Capacitor In VR1 Voltage Regulators{4467}
Usage:
All SR 4 Generators With 4W5269 And 4W5270 Voltage Regulators
Reference: Service Manual, SENR7968-03, Page 17, SR 4 Generator.
The 3N2049 Capacitor Assembly has become obsolete and can no longer be replaced for SR 4 Generators with line to neutral power for excitation and regulation. It has been determined that removal of this capacitor assembly will not affect the performance of the regulator. If the capacitor assembly fails and requires replacement, the following action should be taken.
1. Remove capacitor (C3) from the regulator assembly.
2. Cut wire No. 26 that connects capacitor (C3) and resistor (R5) at the resistor. Be careful not to cut the resistor lead. See reference for location of components.
Caterpillar Information System:
1990/11/05 New Composite Halogen Headlights And Floodlights Available{1429,1434}
1990/10/29 Improved 7W7730 Cylinder Head Gasket Provides Better Sealing Capability{1124}
1990/10/29 New Cylinder Head Gasket And Higher Cylinder Head Bolt Torque{1124,1101}
1990/10/29 Modification Of 1U7791 Valve Seat Driver{0782,1103}
1990/10/29 New Bearing Kits Used In Turbocharger Cartridge Groups{1052,7551}
1990/10/29 Governor Control Motor Polarity May Require A Change{1265,1408,7556}
1990/10/29 New Temperature Regulators Prevent Engine Overheating{1355}
1990/10/29 New CE (Caterpillar Environmental) Family Of Metal-Shell Connectors Used{7553}
1990/10/22 New "On Engine" Adjustment Procedure For 3161 Woodward Governor {1264,0782}
1990/10/22 Increased Capacity Oil Sumps Require Additional Oil And Different Maintenance Interval {1302,1318,7524,7525}
1990/10/22 Front Trunnion Bolts May Come Loose {1153,1154}
1990/10/22 Improved 7C1757 Exhaust Manifold Group {1059}
1990/11/05 New Exhaust Manifold Gasket And Locks Used In Exhaust Manifold Groups{1059}
1990/11/05 New Stronger Exhaust Valve Push Rod Used In Valve Mechanism Groups{1208}
1990/11/05 Some Components Of The 7E3580 Engine Adapter Group For Allison AT545, MT543D, And MT653DRD Transmissions Are Not Serviced By Caterpillar{3279,1013,3009}
1990/11/05 Service Manual SENR3479-04 Available For Troubleshooting Engine Test Procedures{1901,1900}
1990/11/05 New Crankshaft Seal Groups Used{1160,1161,1202}
1990/11/12 New 7X1400 Digital Diagnostic Tool (DDT) Group Available {0782,0785,1900}
1990/11/12 Adjustable Exhaust Bypass Group Used; Provides More Precise Ability To Set Exhaust Pressure {1057}
1990/11/12 New Alternator Drive Pulley Seal Used With New Drive Pulley; Poly-Vee Belt Can Be Installed {1425,1357}
1990/11/19 Diagnostic Connector Used To Determine Starter Problems; Starter Monitor Unit Can Be Fabricated{0710,1408,1416,1426,1467,1553}
1990/11/19 New Caterpillar Battery Warranty Statement, SELF5124{1401,7780}
1990/11/19 Correct Procedures For Starting, Stopping And Transporting A Product With A Turbocharged Engine{1052}
1990/11/19 Check Engine Speed Sensor And/Or Crank Angle Sensor (Magnetic Pickups) For Fouling{1912,1900,1907,7529}