Identification Of Surge Suppressors{4454,4466}
Usage:
All SR 4 Generators Using A1-Type (VR-1) Voltage Regulators
Two types of surge suppressors with different voltages are used with the A1-type (VR-1) voltage regulators on SR 4 Generators. The Cat part number is listed in the Parts Books with the regulator assembly, but the suppressor type is not identified by the Cat part number on either type suppressor. The two suppressors can be identified by the General Electric (GE) part number:
... GE No. V150PA20A is for 150 volts on line to neutral; Cat part number is 4W5272.
... GE No. V275PA40A is for 275 volts on line to line; Cat part number is 4W5273.
Insert these GE part numbers opposite the Cat part numbers in the parts books.
Caterpillar Information System:
1988/11/07 New Oil Pressure Sender Assembly Used{7455}
1988/10/31 New Air Cleaner Group Has Improved Crankcase Fumes Disposal{1051,1054,1317}
1988/10/31 New Fuel Shutoff Solenoid Assembly Used{1259}
1988/10/24 Seal Retainer And Seals Are Required When A New Cylinder Head Assembly Is Installed{1100}
1988/10/24 Head Bolt Holes In Cylinder Blocks Can Be Repaired{1201,1101}
1988/10/24 New Flywheel Assemblies Used In With Rear PTO Arrangements{1156}
1988/10/24 New Graphite Exhaust Manifold Gasket Replaces Stainless Steel Gasket{1059}
1988/10/17 New Woodward Actuator Assembly (EG10P) Has Lower Relief Valve Setting{1289}
1988/10/17 Self-Locking Bolts Used In Front Timing Gear Group{1206}
1988/10/17 New Service Tools Available{0600}
1988/10/03 Tool Storage For Centurion Track Press Tools {4150,0660,0729}
1988/10/03 Main Rotor Shaft Changed to Eliminate Loose Connecting Bolts {4457}
1988/11/07 Identification Of Jacket Water Heater Elements{1383}
1988/11/07 Digital Dial Indicator Simplifies Fuel Injection Timing Adjustment{0782,0760,1257,1290}
1988/11/07 9Y1784 Pyrometer Wiring Changed To Protect Internal Parts Of Pyrometer{1059,7456}
1988/11/14 New Liner Seat Insert Available{1201,1216,1217}
1988/11/21 Fabric Seat And Back Cushions Available For Parts Service{7307,7312}
1988/11/21 Be Sure To Follow Cooling System Recommendations{1350}
1988/11/21 Improved Pressure Gauge Sender Used{7450,7485}
1988/11/21 Rechargeable Portable Printer Available{0782,1050,1250}
1988/11/21 New Oil Seal For Water Pumps Has Hydrodynamic Grooves{1361,1389}
1988/11/21 One-Piece Tappet (Follower) Used In 11 mm (Type 2) Fuel Injectors{1290}
1988/11/21 Fuel Priming Pump Available As An Attachment{1258}
1988/11/21 Excitation Portion Of Generators Changed To Give Longer Shaft Life{4454,4470}