History Of Pump Impeller (Water Pump) Changes{1364}
Usage:
3306 (76R),
G3306 (4DL),
3306B (63Z) 3306C (7RJ, 9TL, 3KS) Truck Engines
Reference: See the Truck Engine News article entitled "Significant Improvement For Pump Impellers (Water Pumps)" in this issue.
Several design changes have been made to the pump impeller (water pump) over the past few years in the above machine engines. The most current 134-7422 Pump Impeller is made of a black plastic.
For purposes of determining the original build design of the pump impellers for 3300 Engines built in Mossville, refer to the following serial number ranges in the chart:
NOTE: The effectivity in the chart is for truck engines produced in Mossville only. Other effectivity is not available.
Caterpillar Information System:
1997/10/20 Significant Improvement For Pump Impellers (Water Pumps){1364}
1997/10/20 New Control (Air Inlet Heater) Available For Improved Weather Resistance{1090}
1997/10/20 Unit Fuel Injector Group Now Includes Electronic Trim Code{1290}
1997/10/20 New Troubleshooting Guide Available{0374}
1997/09/19 3406C O-Ring Seal And Gaskets Changes Provide Improved Oil And Fuel Leak Resistence In Pump And Governor{7555}
1997/09/19 Special Instruction Available For 141-7060 Injector Wiring Harness Connector Repair Kit To Repair Connectors On HEUI Wiring Harness Assembly{1408,1290}
1997/08/01 Improved O-Ring Seals Replace Former O-Ring Seals In Oil Cooler And Oil Filter Base{1378,1306}
1997/08/01 Troubleshooting Tip For Inlet Air Heater (Flame Start){1090}
1997/08/01 Changes For The C-10 And C-12 1998 Model Year Truck Engines{1000}
1997/08/01 Lubricity Limit Added To Preferred Distillate Fuel Recommendation{1280}
1997/07/01 Cylinder Head Gasket Changed For Tu-Flo 550/750 Air Compressor Groups{1803}
1997/07/01 "T" Adapter Cable Assembly Available{1901}
1997/10/20 New Lighter Weight Housing Assembly Used In Engine Brake Group{1119}
1997/10/20 Improved Plate Gasket Used In Cylinder Block Groups{1221}
1997/10/20 New Check Valve Group Used In Fuel Manifold And New Fuel Transfer Pumps Provide Increased Fuel Pressure{1256,1274}
1997/11/18 Be Sure To Correctly Tighten 1R-0712, 1R-0740, 1R-0749, 1R-0750, 1R-0751, 1R-0753, And 1R-0759 Fuel Filter Assemblies{1261}
1997/11/18 Listing Of Deutsch Connector Components{0374,1408}
1997/11/18 Button Repair Kit Available For Electronic Display Groups (Cat ID){7490}
1997/11/18 Optional Service Replacement For 117-5063 Piston (Aluminum) If All Six Pistons Are Being Replaced{1214,1331}
1997/11/18 New Fuel Line Support Brackets Help Eliminate Vibration{1252}
1997/11/18 New Electronic Software Provides Two New Multi-Torque Ratings For 3406E 475/500 Horsepower Truck Engines{1920}
1997/12/31 Thicker Head Gasket Available For Cylinder Block Salvage Procedure{1124}
1997/12/31 Cylinder Sleeve Available For Reconditioning Cylinder Blocks{1222}
1997/12/31 New Fuel Filter Change Interval{1261}