1997/09/15 Caterpillar

Bellows Replaces Flange And Pipe In Water Aftercooler Groups{1063}

Usage:

3612 (9RC242-Up),
G3612 (1YG106-Up),
3616 (1PD283-Up),
G3616 (4CG72-Up) Industrial Engines;
3612 (9FR17-Up),
3616 (1FN150-Up) Marine Engines

Description of Change: A bellows replaces the former flange and pipe within the water aftercooler groups in the above engines. The bellows eliminates the O-ring seal joint and the possibility of inlet (boost) air leaks.

Adaptable To: The 136-9706 Bellows replaces the former 2W-3791 Flange and the former 7W-5130 Pipe within the 1W-0888 and 1W-0921 Water Aftercooler Groups. The change is effective with the above engines and adaptable back to first production. See the Illustration for parts needed.

Views of the 1W-0921 Water Aftercooler Group. (1) 0S-1591 Bolt (18 pieces). (2) 3V-3308 Washer (24 pieces). (3) 0T-0573 Bolt (6 pieces). (4) 135-6950 O-Ring Seal (4 pieces).

Caterpillar Information System:

1997/09/15 Stainless Steel Bolts Replace The Former Waspaloy Bolts{1059}

1997/09/15 Self-Locking Bolt Used On Cylinder Block Cover Groups{7553}

1997/09/15 New Spark Plug On G3500 Engines Improves Reliability{1555}

1997/09/15 Instrument Panel Lines Groups Changed In Order To Improve Mounting Of The Fumes Disposal Group{1071}

1997/09/15 New Exhaust Shield Groups Use Soft Wrap Insulation Instead Of Hot Box Shielding{1067}

1997/09/15 Improvements Made For Exhaust Manifold Groups{1059}

1997/09/15 3406C Pump And Governor Changes Provide Improved Oil And Fuel Leak Resistence{7555}

1997/09/15 New Dual Stage Torsional Coupling Assembly Available For Use With Twin Disc MG 514C Marine Transmissions{3357}

1997/08/01 Changes To Default Overcurrent Settings For EMCP II+ {4490}

1997/08/01 Guidelines For Electrically Grounding Gas Engines {7423}

1997/08/01 Fuel Injector Trim Set Screw {1290}

1997/08/01 New Schedule For Cleaning Unit Injectors In Engines In Heavy Fuel Oil (HFO) Applications {1290}

1997/09/15 New Manifold Soft-Wrap Shields Improve Reliability{1067}

1997/09/15 Gas Admission Valve (GAV) Changed In Order To Provide For The Use Of Dial Indicator Settings{1102}

1997/09/15 Procedure For Disassembly And Assembly Of The Pressure Relief Valve{1233}

1997/09/15 New Diagnostic Logic Used In Personality Modules{1901}

1997/09/15 Metal Particle Detector Kit Is Available For Particle Sensor Groups And Particle Detectors{7400}

1997/09/15 Stainless Steel Instrument Panel Lines Groups Are Used{7451}

1997/09/15 New General Maintenance Wall Charts Available{7500}

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

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

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

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

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