1981/06/22 Caterpillar


Larger Air Cleaner Used For Less Restriction To Air Flow{1051}

Usage:


3412 Marine Engines

Description of Change: Two new air cleaner groups and a new air cleaner adapter group are used on 3412 Marine Engines. The new air cleaner groups use panel-type filters like the former groups, but the filter panels are larger: 609.6 × 609.6 mm (24 × 24") in comparison with the former 381 × 381 mm (15 × 15") panels. The larger filter panels, with the new larger air cleaner inlet adapter group, will permit a better flow of air, with less restriction, to the engine air inlet. Formerly, it was possible to have more than the desired amount of restriction to the flow of engine inlet air.

Adaptable As: Direct replacement when the necessary parts are used together. The new groups can be installed on all 3412 Marine Engines 60M1-Up.

Caterpillar Information System:

1981/06/22 Cylinder Liners Can Now Be Reconditioned Automatically{0664,0674,1216}
1981/06/22 6V3145 Leveler Now Available{0644}
1981/06/15 Plastic Cases Now Available For Electronic Testing And Diagnostic Equipment{0630,0650}
1981/06/15 Procedure To Stop Lubricant Leakage From Flexible Couplings{3252}
1981/06/08 Remanufactured Clutch Plates Available For Power Shift Transmissions{3155,0375}
1981/06/08 Troubleshooting Water In Shut-Off Solenoid Housing{1259}
1981/06/08 Inspect Piston Skirts During Engine Overhaul Procedures{1214,1213}
1981/06/01 Hardened Nuts And Higher Torque Now Used In Ahead And Astern Clutch Groups{3302}
1981/06/01 New Service Meter Used In Mechanical Shutoff Group{7478}
1981/06/01 Some Single Part Numbers Have Two Half Bearings{7551}
1981/06/01 New Seals And Clutch Discs Used{3300,3302}
1981/06/01 Correct Use Of Keystone Ring Groove Gauges{1214,1215,1312,0653}
1981/06/29 Ring Now Used To Hold Bearing In Auxiliary Drive Group{1165}
1981/06/29 New Gasket Used In Front Housing Group{1166,1162,1151}
1981/06/29 New Inlet And Exhaust Valves And Valve Guides Have Tighter Fit To Prevent Corrosion And Guide Wear{1104,1105,1101,1103,1108,1109}
1981/06/29 Use 6V4828 Snap Ring Pliers To Remove Snap Rings From Turbocharger Housing{0610,1052}
1981/06/29 New Gasket Used For End Cover On Inlet Manifold{1058}
1981/06/29 Tube Added To Prevent Air Leakage In Pressure Regulator{3012,3165,3166,3186}
1981/06/29 Some Parts Books And Microfiche Show Wrong Governor And Fuel Pump Drive Groups For Specific Engines{1288,0374}
1981/07/06 6V3176 Relief Valve Available For Center Hole Double Acting Hydraulic Cylinders{0623}
1981/07/06 New Turbocharger, Turbocharger Oil Line And Aftercooler Air Lines Group Used{1052}
1981/07/06 Mailing Of Engine News And Truck Engine News Microfiche Libraries{0374}
1981/07/06 All Size Identification Marks On Engine Bearings Are Now Shown In Millimeters{1000,1230,1219,1203}
1981/07/06 New Retainers Used To Hold Oil Pump Output Tube In Manifold{3314}
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