1993/07/26 Caterpillar

Compressor Nut Torque For Schwitzer Turbochargers{1052}

Usage:

All Caterpillar Engines With Schwitzer Turbochargers

Reference: Service Magazine; November 30, 1992; Page 10; "Left Handed Threads In Compressor Nut On Some Caterpillar Turbocharger" for Caterpillar Engines Equipped With A Turbocharger.

All service literature with torque-turn specifications will replace "torque only" specifications. Use the following procedure for tightening:

1. Put the compressor wheel on the shaft.

2. Tighten the nut as stated in the pre-torque column of the chart.

3. Remove the nut and apply 6V1541 Quick Cure Primer on the threads of the shaft and nut followed by application of 9S3265 Retaining Compound.

4. Tighten the nut as stated in the final torque-turn column of the chart.

Caution: Tighten and loosen in a manner that does not impose bending loads on the shaft. (Use a universal drive and/or T-handle socket wrench.)

Caterpillar Information System:

1993/07/19 Prechamber Rust Removal{1106}

1993/07/19 Regulator Assemblies Available To Service Thermostatic Valve Groups{1355}

1993/07/19 Manifold Pressure Variation at Full Load/Constant Speed{1058}

1993/07/12 The Latest "Gas Engine Installation Drawings" Are Available{0374}

1993/07/12 Preventive Maintenance To Reduce Risk Of Stator Failure{1404,4453}

1993/07/12 Improved Voltmeters Available{7450}

1993/07/12 Magnetic Switches (Relays) May Be Intermittent{1400}

1993/07/05 New Cast Iron Inlet Adapter And Impeller For Water Pumps {1361}

1993/07/05 New Water Pump Groups Use Tapered Roller Bearing {1361}

1993/07/05 New Stronger Elbow Used In Marine And Fire Pump Engine Water Lines Groups {1380}

1993/07/05 False Logging Of 100-01 Low Oil Pressure, And 100-11 Very Low Oil Pressure Diagnostic Codes {1902}

1993/06/21 New Cylinder Head Assembly Provides Improved Valve Seat Retention{1100,1103}

1993/07/26 Engine Changes For 350 Hp{1022}

1993/07/26 Diesel Truck Engine Smoke Limits{1250}

1993/07/26 G3400 Engine Performance Manual{0376}

1993/07/26 New Exhaust Manifold End And Center Sections Used In Dry Type Exhaust Manifold Groups{1059}

1993/07/26 Improved Mounting Reduces Vibration To Liquid Level Switch{7470}

1993/07/26 New Flame Arrestor{1050}

1993/07/26 Service Life of Crankshaft Gears Can Be Extended{1204}

1993/08/02 New Tube Assemblies Used In Air Lines Group Allow Greater Movement{1058}

1993/08/02 Maintaining The Proper Coolant Level In The Radiator{1353}

1993/08/02 Battery Acid Fill Machine May Be Damaging Batteries{1401}

1993/08/02 New Magneto And Magneto Drive{1552}

1993/08/02 Resistor Added To Magneto Shutdown Circuit Protects Shutoff Contactors{1552}