1998/10/01 Caterpillar

New High Inertia Camshaft Drive Gear Available{1212}

Usage:

3516B (8CN, 8KN, 9AN, 2FW, 3CW) Marine Engines, 3516B (6HN, 7RN, 1NW) Generator Set Engines,

SUPPLEMENT: NOVEMBER 1998

Engine News SEBD9265, Article 9, Page 4, October 1998 "3600 Diesel Marine Monitoring System (MMS) Electrical System Schematic Now Available".

Disregard this article and see Engine News SEBD9266, Article 10, Page 6 titled "New High Inertia Camshaft Drive Gear Available".

--------------- END SUPPLEMENT ---------------

Description of Change: The right side (as viewed from the flywheel end of the engine) camshaft drive gear and ring have been replaced with a new high inertia camshaft drive gear and plate. This change will provide improved gear to camshaft joint stiffness while under load.

Adaptable To: The new 101-0242 Camshaft Drive Gear and 4W-4586 Plate are direct replacements for the former 101-1369 Cashaft Drive Gear (when used on the right side) and 124-3180 Ring. The 101-1369 Camshaft Drive Gear is not cancelled. It is still used for the left side camshaft (as viewed from the flywheel end of the engine).

(1) 101-0835 Camshaft Drive Gear.

(2) 101-0242 Camshaft Drive Gear.

Section A-A.

(1) 101-0835 Camshaft Drive Gear.

(2) 101-0242 Camshaft Drive Gear.

(3) 124-3180 Ring.

(4) 4W-4586 Plate.

Caterpillar Information System:

1998/10/01 New Seal Assembly Used In Turbocharger Group{1052}

1998/10/01 New Coil Kits Replace Shielded Transformer{1554,1561}

1998/10/01 New Carburetor Assembly For G300 Series Engines{1266}

1998/10/01 Flash File Bulletin Board System To Be Discontinued{1920}

1998/10/01 New Injector Sleeve Bore Gauge And Tube Brush Available For Injector Sleeve Bore; New Grommet Available For Unit Injector Electrical Connection{1713,1290}

1998/10/01 New Seawater Pump Manifold Improves Priming{1371}

1998/10/01 Improved 133-9096 Diaphragm Assembly Available For Catalyst Engines{1266}

1998/10/01 Troubleshooting Reminder For Engine Low Power Or Intermittent Low Power Symptoms{1250,1252,1256,1260,1261,1273}

1998/09/01 Fabricated Spark Plug Gapping Tool {0766,1555}

1998/09/01 New Cylinder Liner Sleeve Used {1216}

1998/09/01 New Exhaust Valves Have Improved Resistance To Radial Cracking {1105}

1998/09/01 3600 Diesel Marine Monitoring System Owner's Manual Has Been Revised {0374}

1998/10/01 New Connecting Rod Assembly Provides Increased Rod Eye Bushing Retention{1218}

1998/10/01 New Spacer Plate Gasket Provides Improved Sealing{1221}

1998/10/01 Oil Filter Groups For All Commercial 3500 Series Engines Have Been Improved{1306}

1998/10/01 New Gear And New Shaft Assemblies Used In Scavenge Oil Pump Groups{1312}

1998/10/01 3600 High Exhaust Temperature Guided Diagnostics Available In SIS{0372}

1998/10/01 Limited Number Of 105-4365 Electronic Actuator Groups Remain In Parts System{1250}

1998/10/01 3600 Engines Shipped With Oil in the Actuators{1265}

1998/10/01 New Stronger Oil Filter Base Used In Oil Filter Groups{1306}

1998/10/01 Premium Wire Harness Schematics Are Now Available{1408}

1998/10/01 New Combustion Sensor Groups{1555}

1998/10/01 New Valve Improves Fuel Pressure Regulator Adjustment On 3600 Diesel Engines{1715}

1998/10/01 3600 Diesel Marine Monitoring System (MMS) Electrical System Schematic Now Available{7451,7490}