1996/07/22 Caterpillar

Governor Shimming Is Determined By The Governor Test Bench Calibration{1264,1289}

Usage:

3114, 3116, 3126 Industrial, Marine And Generator Set Engines

Reference: Service Manual Module SENR6454; Describes the governor spring preload measurement; Page 17.

The preload stated on the governor Technical Marketing Information (TMI) Specifications is a reference number only. The governor is not manufactured to meet this specification.

Governor shimming is determined by the governor test bench calibration. Governor spring shims are added to increase the HIGH idle screw extension.

Governor spring shims are removed to meet the function 4 (LOW idle lug) specification. If the governor is being rebuilt then the preload specification is a good starting point. It should also be noted that the HIGH and LOW idle screw may need to be adjusted when a new governor is installed on an engine.

Caterpillar Information System:

1996/07/22 New Service Tool Calibration Pins For Mechanical Goverened Engines{1264,1265}

1996/07/22 New Bench Checking And Setting Procedure For Fuel Ratio Control (FRC) Mechanical Goverened Engines{1264,1265}

1996/06/12 New Oil Pump Used As Service Replacement{3310}

1996/06/12 Field Installation Procedure For Stator Thermocouples and RTDs{7498,4453}

1996/06/12 Preventive Measure For Protection Of Air Prelube Pumps{1319}

1996/06/12 New Hose Assembly And Clip Replaces Former Tube Assembly{1318}

1996/06/12 New Components In Accessory Drive Group And Alternator Drive Group Provide Improved Serviceability And Help Prevent Oil Leaks{1207,1425}

1996/06/12 Improvements To Check Valve Within Prechamber Group Reduce Maintenance Schedule{1106}

1996/06/12 Turbocharger Nozzle Cleaning{1052}

1996/06/12 Start-Up Procedure After Rebuild{1000}

1996/06/12 New Part Kits Available For SR4B Generators{4469}

1996/06/12 Selection Of Service Harness For Engines With Electronic Ignition System{1408}

1996/07/22 Replacing The Shutoff Assembly In Engines With Older Governors{1264,1289}

1996/07/22 Servo Assembly Parts Have Been Changed To Make Some Parts Common Between Mechanical Governed (Type I-VI) Engines{1264,1289}

1996/07/22 New Electroless Nickel-Plated Oil Pan Provides Corrosion Protection{1302}

1996/07/22 New Strap Used In Alternator Mounting Group{1357}

1996/07/22 Procedure To Clean Area Around Injector Case And Sleeve Bore During Unit Injector Replacement{1713}

1996/07/22 New Electron Beam (EB) Welded Pistons Have Been Introduced For G3500 Engines Operating At Or Above 1500 rpm{1213,1214,1225,1226,1227}

1996/07/22 New Oil Jet Tube Assemblies Replace Oil Cooling Jet Assemblies{1331}

1996/07/22 New Water Lines Group Will Help Prevent Exhaust Manifold Cracks{1380}

1996/07/22 New Variable Timing Control Box Assemblies Are Used In Detonation Sensitive Timing Ignition Groups To Provide Improved Detonation Protection{1559,1560}

1996/07/22 New Stainless Steel Air Pressure Sensor And Gas Pressure Sensor Tube Assemblies In Engine Wiring Groups Provide Increased Strength And Corrosion Resistance{1058,1285,1904}

1996/07/22 New Bellows Assembly Made With Inconel® To Withstand Frequent Exhaust Temperature Cycles{1059}

1996/07/22 New Bellows Assembly Made With Inconel® To Withstand Frequent Exhaust Temperature Cycles{1059}