1990/12/24 Caterpillar

Auxiliary Oil Filter Groups Used To Increase Oil Capacity And Extend Oil Change Interval To 750 Hours{1318,7534}

Usage:

3406 ( 1RK, 4FD ),
3508 ( 2JF ),
3512 ( 4KC ),
3516 ( 3RC ) Spark-Ignited Engines

Reference: Special Instruction, SEHS9195-01, "Installation of 4P2781 Auxiliary Oil Filter Group for 3406 Spark-Ignited Engines."

Special Instruction, SEHS9234, "Installation of Auxiliary Oil Filter Groups for 3500 Family of Spark-Ignited Standard Engines."

Auxiliary oil filter groups are used for the spark-ignited engines listed. The filter groups will provide increased oil capacity and extend oil service life to a maximum of 750 hours. See the chart for the correct group part number for the appropriate engine.

Although the auxiliary oil filter group is being shipped with a full complement of 4P3631 Filter Elements, this group is being used primarily to provide additional sump capacity. The customer may, at his option, replace the filter elements according to the lubrication and maintenance guidelines, or discontinue using the 4P3631 Filter Elements altogether.

NOTE: See the References for the correct installation procedures. If the 4P3631 Filter Elements are removed, be sure that all retaining hardware is secured or removed. It is recommended that the oil and filter change interval of 750 hours not be exceeded.

This change is effective with 3406 (1RK1, 4FD187), 3512 (4KC156), and 3516 (3RC198) Engines. This change is adaptable to 3406 (4FD188, 190, 192, 194, and 197) Engines, and to first production for the 3512 and 3516 Standard (Stoichiometric) Engines. This change will be incorporated with the next build for 3508 Spark-Ignited Standard Engines.

Caterpillar Information System:

1990/12/24 Oversized Intake And Exhaust Valve Seat Inserts Available For Spark-Ignited Engine Heads{1103}

1990/12/24 New Seals Available For Parts Service Of Noncurrent Water Lines Group{1380,1155,1378}

1990/12/24 New 3E0020 Vehicle Speed Buffer Used{1914,1900}

1990/12/24 Update Information For Exhaust Manifolds{1059}

1990/12/24 Air Pressure Settings For Pneumatic Selector Control Valve On Reintjes® Marine Transmissions{3313}

1990/12/24 Installation Of Zinc Rods In Caterpillar Marine Engines{1350,1388}

1990/12/24 Incorrect Specification For Tightening Turbocharger Compressor Nut In Service Manual For 3306B Diesel Truck Engine, SEBR0545-01{1052}

1990/12/24 Sealed Alternators Available For Earthmoving Applications{1405}

1990/12/17 New Ether Starting Aid Groups Available{1456}

1990/12/17 Personality Module Software Updated; Do Not Troubleshoot Diagnostic Code 55 (No Detected Faults){1901,1902}

1990/12/17 New Rotor Used In BrakeSaver Group; Regulator Valve Improved{1155}

1990/12/17 New Bronze Thrust Plate Used On Center Main Bearing Of Crankshaft Groups{1203}

1990/12/24 New Tube And Bracket Provide Clearance For Alternator{1380,1405}

1991/01/07 Checking Crankshaft Journal Surface Hardness On Remanufactured Crankshafts{1202}

1991/01/07 New Boost Line Hose Assemblies Withstand Higher Temperatures{1081,1057,1088,7554}

1991/01/14 4C8753 Extended Collet Available; Problems With 8T1002 Probe For Fuel Setting{0782}

1991/01/14 Air Compressor Manifolds Are No Longer Available{1803}

1991/01/14 New Battery Load Tester Available To Service Six, Eight, And 12 Volt Batteries{0785,1401}

1991/01/28 New Bracket Assemblies Used In Lifter Group{1209,1281}

1991/01/28 Special Instruction SEHS9298 Gives Installation And Maintenance Information For Gaseous Fuel Filters{1261,1262}

1991/01/28 New Top Piston Ring Improves Wear Resistance{1215}

1991/01/28 Be Sure To Check Inlet Valve Rotocoils After An Engine Overspeed{1109,1105}

1991/02/11 New Sleeve-Type Bearings Give Better Carburetor And Governor Control{1265,1266}

1991/02/11 New Altronic V Magneto Used{1552}