Higher Capacity Auxiliary Pump Group Is Now Available
Usage:
3412 Industrial And Marine Engines (38S, 60M)
Description of Change: A new auxiliary pump group is available for use on 3412 Industrial and Marine Engines equipped with a heat exchanger. The new pump will give enough flow to prevent engine overheating during operation in sea water which is warmer than 29°C (85°F).
With the standard auxiliary pump, overheating can sometimes be a problem when the temperature of the sea water is warmer than 29°C (85°F).
Adaptable To: The new 5N7491 Auxiliary Pump Group can be used as a direct replacement for the standard 3N8561 Auxiliary Pump Group.
Caterpillar Information System:
1980/08/13 Pistons Which Use Keystone-Type Rings Can Be Installed In Place Of Pistons Which Use Rectangular-Type Rings
1980/08/13 Some Valve Lifter Assemblies Have A Black Color On The Finished Surface
1980/08/13 Alcohol Fuels Are Not Recommended For Use In Caterpillar Diesel Engines At The Present Time
1980/08/13 New Caterpillar Publication, "Questions And Answers About Engine Bearings" Is Available
1980/08/13 6V3030 Digital Multimeter, 6V3031 Case And 6V3032 Test Lead Kit Are Now Available For Troubleshooting Electrical Circuits And Components
1980/08/13 Two New Front Power Take-Off Groups Are Available
1980/08/13 New Bend Specification For Used Or Field Reground Crankshafts
1980/08/13 Some Nuts Used On Main Bearing Caps Are Smaller Than Standard Size Across The Flat Sides
1980/08/13 Improved Power Takeoff Service Kits
1980/07/09 Check Retainer Screw Depth In Plastic Pads Of 5P8637 Crankshaft Support Groups
1980/07/09 Check Journal Hardness On Reground Crankshafts
1980/07/09 In The Future, Oversize And Undersize Connecting Rod And Main Bearings Will Have Size Identification Marks In Metric Units
1980/08/13 Carbon Cutting On Thrust Side Of Piston Top Land Is Normal Condition For Pistons With Offset (Not In Center) Pin Bores
1980/09/10 6V3143 Distorter Adapter Available For Use With 5P7409 Wear Sleeve Distorter For Removal Of Crankshaft Wear Sleeves
1980/09/10 5P1746 Governor Sealing Tool Available Separately
1980/09/10 4S6553 Engine Evaluation Test Instrument Group Has Been Canceled
1980/09/10 Special Bolts Available For Better Protection Against Modifications Of Fuel System And Governor Settings
1980/09/10 Oil Pump And Lines Group Changed To Use Different Method Of Flow Control For Emergency Lubrication System{3310,3311}
1980/09/10 Easy-To-Make Tool Holds Fuel Injection Nozzles According To Cylinder Number
1980/09/10 List Of Service Publications
1980/09/10 Cartridge Repair Kit Available For AiResearch Turbochargers
1980/09/10 6V2086 And 6V2087 Seal And Wear Sleeve Installers Available
1980/09/10 Reference List Of Pistons Used With The Different Types Of Connecting Rods
1980/09/10 CAUTION: Procedure For Adjustment Of Fuel Rack Setting On Hydramechanical Governors Has Been Changed