Varistor Diode Not Listed In Parts Books {5718}
Usage:
CS-551, CS-553, CP-553 Compactors
The varistor diode protects the vibratory switch from burning as the field of the anti-lope solenoid valve coil collapses. See Page 64 of these Parts Books:
CS-551 Vibratory Compactor, Form KEBP3662;
CS-553 Vibratory Compactor, Form KEBP3661; and CP-553, Form KEBP3660.
Add footnote "Q" next to Ref. No. "1"(for part number 04004167). The footnote should read "Q - Includes Varistor Diode 982520".
Caterpillar Information System:
1989/08/07 New Steering Cylinder Available {4303}
1989/08/07 Correct Type Of Auger Quarter Segment On Each Side Of Drive Housing {6631}
1989/08/07 Stronger Bolts Available To Service Bevel Gear In Rear Axle {3256}
1989/08/07 Pressure Reducing Valve Improves Torque Control {4350,4352}
1989/08/07 Left Hand Rear View Mirror Improved {7319}
1989/08/07 New Yoke And Retainer Used In Input Transfer Gears {3159}
1989/08/07 New Transmission Control Switch Used In Transmission Hydraulic Controls {3168,3171}
1989/08/07 New Modulating Relief Valve Used In Transmission Hydraulic Controls {3152}
1989/07/24 Improved Control Rod Assembly Used In Fuel Injection Control Groups{1298}
1989/07/24 Stronger Support For Turbocharger Exhaust Elbow And New Coupling Used{1052,1059}
1989/07/24 Stronger Spacer Plate Prevents Cracking{1221,1350}
1989/07/24 Engine Oil Coolers With New Rubber End Sheet Available For Parts Service{1378}
1989/08/07 Braces Added To Reduce Vibration Of Radiator {1353}
1989/08/07 Use Of Front Tires With A Different Profile Effects The Travel Speed Indicator {4203}
1989/08/07 Different Oil Used In Hydraulic System {5068}
1989/08/07 Two Hold-Down Plates Can Be Welded To Hydraulic Tank {5056}
1989/08/07 Replacement Parts For Magnetos Discontinued On Gasoline Starting Engines {1530,1500}
1989/08/07 Temperature Sensor Pocket Kit Available For Danfoss® Temperature Contactors {1350,7403}
1989/08/14 Shutoff Valve And Hoses Available To Shut Off Oil To Swing Cylinders When Roading Backhoe Loaders{4300,5050,5105}
1989/08/14 New Feeder Sensor Available{5643}
1989/08/14 New Anti-Lope Valve Requires Modification Of Steer Pivot Plate{5624,4300}
1989/08/14 Worldwide Service Directories Available For Marine, Petroleum, Power Generation Products{0354,0370,0374,0375,1022,4450}
1989/08/14 New Oil Change Recommendations For Severe Applications{0374,1302}
1989/08/21 Extendable Stick Needs Spacers For Earlier Machines{6502}