1997/11/14 Caterpillar

History Of Pump Impeller (Water Pump) Changes{1364}

Usage:

3304 (02B, 04B, 10E, 37Y),
3306 (23C, 66D, 07Y, 64Z) Industrial;
3304B (1NS, 1PS),
3306B (1RS) Marine;
3304B (9HK, 83Z),
3306B (2AJ, 8JJ, 2TM, 9NR, 85Z) Generator Set Engines

Reference: See the 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 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 charts:

NOTE: The effectivity in the chart is for engines produced in Mossville only. Other effectivity is not available.

Caterpillar Information System:

1997/11/14 Significant Improvement For Pump Impellers (Water Pumps){1364}

1997/11/14 New Troubleshooting Guide Available{0374}

1997/10/10 Setpoint Value Explanation For "Low Oil Pressure Shutdown At Idle Speed" Added To SENR5809-03 Electronic Modular Control Panel (EMCP II) For MUI Engines{4490}

1997/10/10 Water Cooled Pre-Chamber Insert Available{1103}

1997/10/10 Flexible Hose Assembly Replaces Tube Assemblies In Instrument Panel Lines Groups{7451}

1997/10/10 Spark Plug Seat Cleaner Recommended For Use On Cylinder Heads{1555}

1997/10/10 Washers Available Within The Conversion Group (Landfill Carburetor) For Spacing Of Valves{1283,7553}

1997/10/10 New Piston Crown Improves Service Life{1214}

1997/10/10 Improved Piston Crown Assembly Used In The Rod And Piston Group{1214}

1997/10/10 New Exhaust Bypass Group Available{1057}

1997/10/10 Part Numbers For Stator Assemblies Available{1552}

1997/09/15 Lubricity Limit Added To Preferred Distillate Fuel Recommendation{1280}

1997/11/14 Special Instruction, REHS0164, "Conversion Of Generators From Self-Excited To Permanent Magnet" Is Available{4450}

1997/11/14 Improved Indicator Assembly Replaces The Former Indicator Assembly{7455}

1997/11/14 Electronic Control Group (Data Booster) Available In Order To Enhance The Signal From The Electronic Control Module (ECM) To The Receiving Device{1408}

1997/11/14 Part Numbers For Current Production Water Pump Groups{1361}

1997/11/14 Handling Instructions For Water Pumps{1361}

1997/11/14 Silicone Lubricant Aids Installation Of Transformer Extension And Increases Life Of Extension O-Ring Seal{1409}

1997/11/14 New Master Parts Manuals Available For The 3600 Family Of Engines{0374}

1997/11/14 New Spark Plug On G3600 Engines Improves Reliability{1555}

1997/11/14 Illustration Changes To EMCP II+{4490}

1997/11/14 Two Versions Of Customer Communications Module Software Available For Personal Computers{1926}

1997/11/14 Proper Welding Procedure On Machines And Engines With Electronic Controls{1400}

1997/12/16 Be Sure To Correctly Tighten 1R-0712, 1R-0740, 1R-0749, 1R-0750, 1R-0751, 1R-0753, And 1R-0759 Fuel Filter Assemblies {1261}