1987/01/05 Caterpillar

New Water Temperature Regulators Available {1355}

Usage:

3208 Engines In All Applications

Description of Change: A new, higher temperature low leakage regulator is available for the 3208 Engine, if desired, in place of the standard 9N5121 Regulator (180°F) used in production in most applications. The new temperature regulator has a higher temperature opening of 190°F as compared to 180°F of the former low leakage temperature regulator. The higher opening temperature will improve cab heater efficiency.

Adaptable To: The new 7C3472 Temperature Regulator is used in the 4W643 Service Group as a direct replacement for the former low leakage 4W160 Regulator.

NOTE: Adaptability of the new temperature regulator in shuttered applications requires a higher temperature sensor for the shutters and/or the fan clutches.

Caterpillar Information System:

1977/12/19 Maintenance Instructions For Coolant Conditioner Elements{1350}

1977/12/19 New 5P7450 Torque Multiplier For Torque Applications Up To 1500 LB FT (2030 N·m){0614}

1977/12/19 Improved Mounting Base For Air Compressor{1065}

1977/12/12 Excessive Oil Consumption Can Be Caused By Dirt In Air Inlet System Or By Flaking Of The Piston Compression Ring{1213,1215}

1977/12/12 New Coolant Tube And Regulator Housing Used With Water Cooled Exhaust Manifold Gives More Clearance For Hooks To Lift The Engine{1350,1355,1380}

1977/12/12 Use Hardened Flat Washers With Diagonal-Split Hydraulic Flanges{5057,7553}

1977/12/05 New Fuel Injection Valve Assembly Has Improved Internal Components{1254}

1977/12/05 Use The 5P8610 Auxiliary Fitting Group To Charge Two Suspension Cylinders At The Same Time{0690,7201}

1977/12/05 New Oil Filter Base Has Reinforcement Around The Center To Prevent Possible Cracks{1306}

1977/12/05 Water Separators Needed On Machines And Engines In The Field With SMFS{1250,0336}

1977/11/28 Reference Chart For Main And Connecting Rod Bearings{1203,1219,1230}

1977/11/21 Add Chamfer To Cartridge Assembly Bearings To Prevent Oil Leakage{1052,1053}

1987/01/19 Difference Between Alternator Indicator In Electronic Monitoring System (EMS) And Low Voltage Indicator In Operating Monitoring System (OMS){7490,7450}

1987/01/19 Oil Total Base Number (TBN) Test Kit Now Available To Dealers Outside The United States And Canada{1300}

1987/01/19 Generator Sets Wired For Use With Customer-Supplied Switch Gear; Do Not Run Without Switch Gear{7002,7400}

1987/01/19 Fuel Injector Reference For 3500 Family Engines{1290}

1987/01/26 Conversion Of Competitive Machines To Caterpillar Undercarriage Components {4150}

1987/01/26 New Torque Specification For Disconnect Switches {1411}

1987/01/26 Additional Metal Surface Reconditioning Products Available From Caterpillar {0674,1000}

1987/01/26 New Electronic Position Indicator Group Is Available {0782,0600}

1987/01/26 Main And Connecting Rod Bearing Part Numbers {1203,1219,1230}

1987/01/26 New Piston Oil Cooling Jet Assembly Used {1331}

1987/02/09 Tips For Job Site Repair Of Tracks{0729,4169,4170,4172}

1987/02/09 New Assembly Procedure Helps Prevent Oil Pump Failures{1304,4457}