1999/02/01 Caterpillar

New Cylinder Head Gaskets (Combustion Rings) Available{1124}

Usage:

3606 (8RB732-Up),
3608 (6MC593-Up),
3612 (9RC286-Up, 9FR21-Up, 2NZ176-Up),
3616 (1PD347-Up, 1FN150-Up) Engines

Description of Change: New cylinder head gaskets (combustion rings) are used in these engines. The new combustion rings move the contact area outward on the cylinder liner flange. This more evenly distributes the clamping loads on the cylinder liner.

Adaptable To: The new 145-7230 Gasket (combustion ring) is a direct replacement for the former 123-0247 Gasket in engines running on distillate fuels with dry liners. The new 166-7083 Gasket (combustion ring) is a direct replacement for the former 126-5986 Gasket in engines running on Heavy Fuel Oils (HFO) and using dry liners.

The new 145-7230 and 166-7083 Gaskets are not used on engines using the 111-1656 Flange Cooled Cylinder Liner. Engines running on distillate fuel and using the flange cooled cylinder liner must order the new 173-2669 Gasket as a direct replacement for the former 123-0247 Gasket. Engines running on HFO and using the flange cooled cylinder liners must order the new 173-2670 Gasket as a direct replacement for the former 126-5986 Gasket. The former gaskets are being canceled. The new gaskets (combustion rings) are in effect as listed above.

Caterpillar Information System:

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

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

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

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

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

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

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

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

1999/02/01 New Turbocharger Exhaust Coupling Used In Turbocharger Groups{1052,1061,1065}

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}

1999/02/01 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}

1999/02/01 Extended Life Coolant (ELC) Now Preferred For 3600 Diesel Engines{1395}

1999/02/01 New Relief Valves Used In Prelube Lines Groups And Starting Motor Air Pressure Regulator Groups{1451,1469}

1999/02/01 New Valve Improves Fuel Pressure Regulator Adjustment On 3600 Diesel Engines{1715}

1999/02/01 New Woodward EGB13P Reverse Acting Actuator Assembly{1716}

1999/02/01 Improvements Made On Gas Engine Wiring Groups{1900,1907}

1999/02/01 Woodward Hand Held Programmers (Control Programmers) Available For Use With Woodward 700 Series Controllers (Governor Control Groups){1930,1908}

1999/02/01 Particle Sensor Group Improved{7430}

1999/02/01 Caterpillar Now Has Parts Support For Previously Non-Supported Custom Parts{7567}

1999/02/01 Use 152-7143 Cable Assembly For Flash-Programming Generator Status Control Module{4450}