1993/03/01 Caterpillar

New Rear Gear Group (Cam Drive) Used {1212,1206}

Usage:

3516 (4MJ) Marine Engines

Description of Change: A new rear gear group (cam drive) is used. The only difference between the new and former rear gear groups is the camshaft drive gear. A new heavier camshaft drive gear is used in the new rear gear group. The new heavier camshaft drive gear has increased rotational inertia. This increased inertia results in lowered camshaft drive gear to idler gear mesh torques. The result will be increased rear gear group service life.

Adaptable To: The new 1008310 Rear Gear Group is a direct replacement for the former 4W5906 Rear Gear Group. The new group is in effect with 3516 Marine Engine 4MJ34 and adaptable to all earlier engines.

The only difference between the new and former rear gear groups is the new 1006518 Camshaft Drive Gear. The 7E3897 Camshaft Drive Gear is used in the former rear gear group. Two camshaft drive gears are used in each rear gear group.

Difference between 1006518 Camshaft Drive Gear (1) and 7E3897 Camshaft Drive Gear (2).

Caterpillar Information System:

1993/03/01 Thicker Gasket Helps Prevent Leaks In Auxiliary Sea Water Pump Applications {1371}

1993/03/01 Shorter Rack Shutoff Solenoids Available {1259}

1993/03/01 Publications Updated For Hydraulic Pump And Motor Service {5050}

1993/02/22 New Voltage Regulators Provide Improved Reliability{1410,1405}

1993/02/15 Low Idle Operating Expense

1993/02/15 New Water Seals Used In Cylinder Head Groups; New Water Seal Assemblies And O-Ring Seals Used In Insert Kit {1115}

1993/02/15 Valve Seat Insert Removal Tools {0703,1103}

1993/02/15 New Oil Pump Groups Do Not Require Key On Drive Shaft {1304}

1993/02/15 Maximum Wiring Harness Extension Length Specification {1408,7451}

1993/02/15 New Tank Assemblies Used In Expansion Tank Groups; New Pressure Cap; New Coolant Recovery System Available {1354,1392}

1993/02/15 New Breather Group And Fumes Disposal Group Help Reduce Oil In Blow-By Fumes {1317}

1993/02/15 Aftercooler Core And Turbocharger Compressor Wheel Cleaning Interval {1317,1052,1054,1060}

1993/03/08 Understanding Circuit Breakers{1400,1420}

1993/03/08 Requirements For Installing A Different Model Year 3176 Truck Engine{1018}

1993/03/08 Moisture Entry Into Engine Electronic Controls{1901}

1993/03/08 Fan Drive Pulley Group Components{1359}

1993/03/08 New Alternator Guard Used In Belt Guard Groups{7168}

1993/03/08 New Fuel Priming Pump Kits Available{1258}

1993/03/08 Product Support Literature Available{0374}

1993/03/15 New Attachment Governor Group Available {1264}

1993/03/22 Publications Updated For Hydraulic Pump And Motor Service{0374,5050}

1993/03/22 0R3765 Remanufactured Camshaft Available{1210}

1993/03/22 1041820 Wiring Kit Available To Prevent High Coolant Temperature Alarm After Engine Shutdown.{7417}

1993/03/22 New Bushing Used In Fuel Injection Pump Groups{1251}