1994/02/21 Caterpillar

Improved Screen Used In The Brake Oil Cooler {1366,4295}

Usage:

784B (5RK) Tractors;
785B (6HK),
789B (7EK),
793B (1HL) Trucks

Description of Change: A cylinderical screen is now used in the rear brake oil coolers on the 784B Tractors, 785B and 789B Trucks. The new screen is used on both the front and rear brake oil cooler in the 793B Trucks. The cylinderical screens, part of the Oil Cooler Line Groups are more durable and will give longer service life.

Adaptable To: The new 6E-6640 Screen Assembly is a direct replacement for the former 9T-1460 Screen Assembly when used with the parts shown in the chart. The new screen assembly is effective with 784B (5RK13) Tractor, 785B (6HK191), 789B (7EK185) and 793B (1HL58) Trucks. The location of the parts are given in the following charts and illustrations.

784B Tractors

Parts Location. (A) Rear brake oil cooler.

785B Truck

Parts Location. (A) Rear brake oil cooler.

789B Truck

Parts Location. (A) Rear brake oil cooler.

793B Truck

Parts Location. (A) Rear brake oil cooler.

Caterpillar Information System:

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}

1994/02/21 Right Hand Console Reinforcement {5258}

1994/02/21 New Parts Service Friction Disc Available For Machines With Shift Harshness Complaints {3150,3155}

1994/02/14 Improved Mounting Method For Hydraulic Quick Hitch Pins{5133}

1994/02/14 New Universal Joint Groups Have Improved Sealing{3251,3253}

1994/02/14 Shorter Stud Used To Improve Sealing Between The Radiator Cap Assembly And Filler Adapter{1382,1353}

1994/02/14 Improved Wheel Bearing Cone Anti-Rotation System Prevents Wheel Bearing Cones From Rotating On The Axle Housing{4208,4234}

1994/02/14 Publications Available For Off Highway Truck Retrofits{1290,1631,1900,3100,3150}

1994/02/14 Thicker Retaining Ring Is Available For Use With CAT® GraderBit Assemblies{6151,6150}

1994/02/21 Usage of Transmission Hand Controls {3168}

1994/02/21 Direction Of Drum Rotation Can Be Changed; Chain Case Hub Must Be Shimmed Correctly {5634}

1994/02/21 Performance Of Rotor Axle Seal Depends On Correct Shimming Procedure {5634}

1994/02/21 Servicing Lighted Rocker Switches {1435}

1994/02/28 New Shroud Assembly Now Available for Power Take Off {1165}

1994/02/28 Fuel Sump Tank Drain Valve Protection Available {1279}

1994/02/28 Implement Status Switch Harness Modifications {1408,7490}

1994/02/28 New Resistor Provides Higher Intermediate Speed of Air Conditioner Fan {7320,7337}

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}