1991/07/08 Caterpillar


Dowel Hole Removed From 8N3946 Governor Housing Improves Service Life{1287}

Usage:


3208 Engines

Description of Change: The alignment dowel in the governor housing has been eliminated. Also, the diameter on one of the mounting holes has been decreased to provide correct fuel pump to camshaft gear alignment. The former housing could crack near the mounting bolt holes if the dowel hole was not correctly located in the housing.

Adaptable To: The improved 8N3946 Governor Housing (same part number) is a direct replacement for the former housing. This change is effective with the engines in the chart.


NOTICE

Do not remove the dowel from the former housing. This will result in front gear train misalignment and a gear failure.


Caterpillar Information System:

1991/07/08 Caterpillar Original Equipment White And Yellow Paint Is Available In Aerosol Cans For Touch-Up Purposes{0652,7559,7581}
1991/07/01 Larger 7N1308 Secondary Air Filter Can Be Used In Place Of 1P8482 Secondary Air Filter{1054}
1991/07/01 New Exhaust Manifold Gasket Available{1059}
1991/07/01 New Thermostatic Switches Used In Air Conditioning Systems{7320}
1991/06/24 Correct Adjustment And Installation Procedure For Engine Speed Timing Sensor{1912}
1991/06/24 New Aftercooler Core Assembly With Increased Corrosion Resistance Available As An Attachment For Landfill Applications{1064}
1991/06/24 New Flame Arrestor Assembly Used In Flame Arrestor Group{1050}
1991/06/24 Air Starter Relay Valve Improved{1462}
1991/06/17 New Top Piston Ring Improves Wear Resistance{1215}
1991/06/17 New Gasket Used In Flywheel Housing Cover Group{1157}
1991/06/17 Personality Modules For 1991{1902}
1991/06/17 New Seal And Improved Plate Eliminate Leaks In BrakeSaver Water Lines Group{1380,1155}
1991/07/08 New Dual Service Program Module (SPM) Available{1901}
1991/07/08 Full Load Setting (FLS) And Full Torque Setting (FTS) Should Be Correctly Programmed{1901,0782,1257,1908,7557}
1991/07/08 New Crankshaft Seal Groups Provide Increased Protection From Dirt And Dust{1160,1161}
1991/07/08 Larger Washer And Longer Bolt Used On Magneto Mounting Flange{1552,1556}
1991/07/22 New Video Tape, SEVN1962, Shows Correct Procedures To Counterbore Top Deck Of Cylinder Block And Install Liner Insert {1201,0374,1216}
1991/07/22 New Throttle Actuator In Governor Groups Improves Engine Stability {1289}
1991/07/22 New Return Spring Used In Unit Injectors {1290}
1991/07/22 New Turbocharger Turbine Nozzle Provides Higher Boost And Lower Exhaust Temperatures {1052}
1991/08/12 Do Not Use RTV Sealant On Valve Cover Gaskets{1107,1120,7555}
1991/08/26 New Hose Used To Connect Turbocharger Compressor Outlet To Air To Air Aftercooler (ATAAC) Inlet Tubing {1052,1063}
1991/08/26 Initial Valve Lash Checking Interval Changed {1105}
1991/08/26 New Water Temperature Regulator (With Internal Vent Valve), Regulator Housing, Pipe, And Gasket In Water Lines Group {1355}
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