1999/02/01 Caterpillar

New Turbocharger Exhaust Coupling Used In Turbocharger Groups{1052,1061,1065}

Usage:

3516B (1NW) Generator Set Engines

Description of Change: A new turbocharger exhaust coupling is used in the turbocharger groups on this engine. The new coupling is required because the counterbore depth in the turbocharger turbine housing (where the turbocharger exhaust coupling fits) has been changed from 22.22 mm (.875 in) to 15.88 mm (.625 in).

Adaptable To: The new 165-4190 Coupling has replaced the former 127-4421 Coupling in the 145-7990 and 145-7991 Turbocharger Groups. The new coupling is effective with 3516B (1NW116-Up) Generator Set Engines. The illustration shows the locations of the new couplings (1).

The 145-7091 Turbocharger Group (part of the 145-7990 Turbocharger Group) includes the 116-6262 Turbine Housing. The 145-7092 Turbocharger Group (part of the 145-7991 Turbocharger Group) includes the 116-6261 Turbine Housing. If the counterbore depth (for the exhaust coupling) is 15.88 mm (.625 in), the new 165-4190 Coupling is required. If the counterbore depth (for the exhaust coupling) is 22.22 mm (.875 in), the former 127-4421 Coupling is required.

145-7990 or 145-7991 Turbocharger Group.

165-4190 Coupling (1).

Rear face of engine block (A).

Turbocharger Turbine Housing (B).

Exhaust Elbow (C).

Caterpillar Information System:

1999/02/01 New Piston And Rod Groups Used{1214,1215}

1999/02/01 Bearing Specifications For 3408E And 3412E Hydraulically Actuated Electronically Controlled Unit Injector (HEUI) Hydraulic Drive Group{1714}

1999/02/01 Improved Cylinder Head Groups For G3400 Engines{1100,1101}

1999/01/01 Use 144-0235 Belt Tension Gauge To Check Belt Tension{7461,1357}

1999/01/01 Use 145-9342 Filter Crusher to Reduce Waste And Collect Oil{5720}

1999/01/01 Use 9U-5968 Hydrostatic Filter Group To Filter Contaminanted Oil{5050,3200,3218}

1999/01/01 Use 153-9630 PWM-Analog Test Group-Sensor Adapter Kit For DataView{1000,3000,4000,5000,6000}

1999/01/01 Use 131-5050 DataView Group and 131-5051 DataView Portable TechStation Group For Accurate Diagnostics{1000,3000,4000,5000,6000,0788}

1999/01/01 Use 149-5138 Mechanical Push/Puller For Extra Force In General Purpose Applications{0700}

1999/01/01 New 146-4080 Digital Multimeter Available For Troubleshooting Electronic Circuits{0115}

1999/01/01 EMCP II+ Has New Default Setpoints To Reduce Nuisance Shutdowns{4490,7451}

1999/01/01 Corrections To Special Instruction, REHS0181, Instructions For Mounting The Electronic Modular Control Panel II In A Remote Location{4490,7451}

1999/02/01 Use 152-2067 Differential Pressure Gauge To Monitor Aftercooler Pressure Drop In Applications With Crankcase Fume Recirculation{1063}

1999/02/01 Bolts, Washers, And Spacers Grouped Into Fastener Groups In Engine Cylinder Head Groups{1100}

1999/02/01 161-3995 Oil Filter Spring Group Available To Increase Oil Filter Element Seating Force{1306}

1999/02/01 Use FT2613 Cap Assembly For Adjusting 7E-3407 Gas Regulator{1715}

1999/02/01 New Lines Groups Available To Eliminate Leakage In Air Piping{1058,1071}

1999/02/01 New Exhaust Manifold Shield Assemblies Provide Increased Heat Protection For Wastegate Area{1067}

1999/02/01 Use 151-8689 Seal Template Tool For Cylinder Head Combustion Surface Inspection{1101}

1999/02/01 New Prechamber Assembly And Ignition Body Assembly In Prechamber Groups{1106}

1999/02/01 New Cylinder Head Gaskets (Combustion Rings) Available{1124}

1999/02/01 New Thicker Jacket Water Side Cover Help Prevent Coolant Leaks{1201}

1999/02/01 Crankshaft Oil Passage Plugs Should Be Checked For Tightness On Some Crankshafts At Engine Overhauls{1202}

1999/02/01 New Intermittent Prelube Basic Pump Group And Bracket Assembly Used{1319}