1994/02/28 Caterpillar


New Resistor Provides Higher Intermediate Speed of Air Conditioner Fan {7320,7337}

Usage:


Challenger 65 &
65B (7YC),
Challenger 75 (4CJ) Tractors

During difficult cooling conditions, the air conditioner fan may be run in the top (purge) speed. In the top (purge) speed, the fan noise is objectionable to many operators.

A new resistor is available to provide a higher intermediate speed for the air conditioner fan. The resistor controls the fan speed. The new resistor provides a faster intermediate fan speed.

The new 106-5174 Resistor is a direct replacement for the 7T-7687 Resistor. The illustration shows the location of the resistor.


Location of the 7T7687 Resistor

Caterpillar Information System:

1994/02/28 Implement Status Switch Harness Modifications {1408,7490}
1994/02/28 Fuel Sump Tank Drain Valve Protection Available {1279}
1994/02/28 New Shroud Assembly Now Available for Power Take Off {1165}
1994/02/21 Servicing Lighted Rocker Switches {1435}
1994/02/21 Performance Of Rotor Axle Seal Depends On Correct Shimming Procedure {5634}
1994/02/21 Direction Of Drum Rotation Can Be Changed; Chain Case Hub Must Be Shimmed Correctly {5634}
1994/02/21 Usage of Transmission Hand Controls {3168}
1994/02/21 Improved Screen Used In The Brake Oil Cooler {1366,4295}
1994/02/21 New Suspension Cylinder Rod Seals For Arctic Region Applications {7201,7213}
1994/02/21 Replaceable Sleeve Bearings Can Be Installed In The Circle Assembly And Moldboard Rail Brackets {6154,6157}
1994/02/21 Frame Reinforcement For Challengers With Gel-Filled Front Idlers and Front Counterweights {7050}
1994/02/21 Improved Hydraulic Coupler Has Plated Parts To Resist Corrosion {6129,5057}
1994/02/28 6G-2943 Circle Assembly Can Be Reinforced To Improve Service Life In Severe Applications {6154,6157}
1994/02/28 New Guard And Skirting Added To Cutter Box To Protect Tail Pulley And Lower Portion Of First Stage Conveyor {6635}
1994/02/28 Improved Lubrication Of Attachment Coupler Bushing {5133}
1994/02/28 Soldering Iron Available For Field Use {0709,1400}
1994/02/28 New Retaining Compound Is Available {0649}
1994/02/28 A New Gauge Group Is Now Used To Prevent Fogging {7450}
1994/02/28 Identification Plate For Starting/Charging Diagnostic Connector {1450,7557,7569}
1994/02/28 New Turbocharger Models Have Left-Hand Threads On Compressor Nut And Turbine Shaft {1053,1052}
1994/02/28 Remove Internal Components From 4P-8454 Cover Assembly {1309}
1994/02/28 Non-Counterbored Valve Guides Used To Reduce The Amount Of Oil That Flows Down Valve Stem {1104}
1994/02/28 Improved 1R-0716 Oil Filter Should Be Used On 3500 Engines {1318}
1994/03/07 Circle Drive Unit Cover Can Be Modified To Prevent Oil Loss Through The Vent{5201,5209}
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