1995/12/11 Caterpillar

Improved Arc Suppressors Withstand Additional Vibration and Flexing{7337,1623}

Usage:

Machines With Air Conditioning And With Sure-Seal Connectors On The A/C Compressor.

Reference: Service Magazine Article, September 26, 1994, Page 8, 9; "Arc Suppressors Improve Life Of Air Conditioner Thermostatic Switch".

Description of Change: The arc suppressors which protect the air conditioning thermostatic switch have been improved. Change level 3 encapsulates the diode inside a solid block of plastic. Change level 4 secures the wires in the plastic block in a better manner to prevent wire breakage. Both changes improve the reliability by making the arc suppressors more rugged and able to withstand additional vibration and flexing.

Adaptable To: The improved 3E-9169 and 105-8827 Arc Suppressors are adaptable to all machines with air conditioning and the Sure-Seal connectors. The change level is stamped on the label of the arc suppressor after the part number.

NOTE: These changes apply only to the arc suppressors listed which are used with Sure-Seal connectors. The 106-8704 Arc Suppressor used with Deutsch (DT) connectors is not affected.

Caterpillar Information System:

1995/12/11 Improved Shift Lever Switch{3168}

1995/12/11 Correct Harness Code Connections{3150}

1995/12/11 Correct Rear Axle Housing And Final Drive Oil Levels Improve Service Life{4070}

1995/12/11 Adapter Added To The Oil Cooler Lines Group{1365,1380}

1995/12/11 Drawbar Cushion Stops Reduce Noise and Shock{7105,7119}

1995/12/11 Implement Valve Signal Hose Prevents Leaks Due To Vibration{5057}

1995/12/04 Possible Sources High Crankcase Blowby From Breather Tube {1317}

1995/12/04 Engine Control Module (ECM) Atmospheric Pressure Sensor Relocated {1923}

1995/12/04 Rear Suspension Cylinder Charge Can Be Checked By Measuring Between The Rear Suspension Cylinger Retaining Pins {7213}

1995/12/04 Snow Plow Protection Arrangement Is Available For The H-Series Motor Graders {1051,1055,1068,4257,4285,7251,7257,7267,7273}

1995/12/04 Water Separator Has Been Added To The 8W-6270 Fuel Lines Group To Help Prevent Corrosion {1263,1274}

1995/12/04 Pump Drive Lube Hose Assembly Prevents Leaks Due To Vibration {5057,5084}

1995/12/11 New VIMS Download Cable Is Now Available{7451}

1995/12/18 New Pressure Switch Assembly That Provides Improved Service Life Can Be Used In The Automatic Retarder Control (ARC) System{3123}

1995/12/18 New Suspension Cylinder Protection Improves Service Life Of Cylinder Rod Wiper Seal{7213}

1995/12/18 New Switch Assembly (Pressure Switch) For The Parking Brake Indicator Gives Longer Service Life{7486}

1995/12/18 Service Meters Improved To Help Prevent Lens Fogging{7480}

1995/12/18 Mechanical Unit Injector Identification Code{1290}

1995/12/25 Improved Oil Lines For Optional Leveling Blade Improve Service Life{5057}

1995/12/25 New Valve Guide Available{1104}

1996/01/08 Retrofittable Maintenance-Free Suspension Kit Available{4150,4196}

1996/01/08 Improved Wheel Bearing Cone Anti-Rotation System Prevents Wheel Bearing Cones From Rotating On The Axle Housing{4208,4234}

1996/01/08 Key Start Switch Improved{1416}

1996/01/08 Air Conditioner/Heater Fan Switch Improved{1435,7320}