1997/07/28 Caterpillar

New Service Tool Available For Adjusting Transmission Control Valve Initial Pressures{3074}

Usage:

120H (4MK, 6NM, 9YR, 6TM, 5FM, 2AN, 9FN, 3GR),
135H (3YK, 7MM, 8WN),
12H (4XM, 5ZM, 2LR, 2WR, 8MN, 2GS, 4ER),
140H (2ZK, 8KM, 3AS, 9ZN, 9TN, 3FR, 8JM, 5HM),
143H (1AL),
160H (9EJ, 3GM, 2HS, 9JM, 2FM, 6WM, 3HR),
163H (5AK) Motor Graders

Reference: Service Manual Module; SENR9159; System Operation, Testing and Adjusting; 120H, 12H, 135H, 140H, 143H, 160H, and 163H Motor Graders Power Train; "Initial Pressure Adjustment Procedure"; Page 44.

The new 139-7050 Cover Plate service tool is available for setting initial clutch pressures at the transmission control valves of the above listed machines. The plate allows testing and adjusting initial clutch pressures of the countershaft transmission without removing the control valve. Refer to the appropriate service literature for procedures and adjustments on the machine being serviced.

139-7050 Cover Plate

Caterpillar Information System:

1997/07/28 Improved Midwheel Air Spring Has Longer Service Life{4193}

1997/07/21 Valve Lash And Bridge Adjustment Intervals {1105,1121}

1997/07/21 Troubleshooting Data Sheet For Diesel Engines {1000}

1997/07/21 Parameters That Indicate Service Interval Explained {7601,7478}

1997/07/21 VIMS-PC V2.3 Now Available {7601}

1997/07/21 New Solenoid Valve Group For Transmission Selector Valve Group Has Improved Coil For Reliability And Longer Service Life {5066,5479}

1997/07/21 Corrections To Power Train Service Manual Modules {3030}

1997/07/21 Seals And Spacers Of A Different Material Are Used In Advanced Modular Cooling System (AMOCS) {1353}

1997/07/21 Dimensions For Installing Attachment Tailgate Mounting Hardware On Articulated Truck Dump Bodies {7271,7258}

1997/07/21 New Custom Product Support Literature Is Available For 789B Trucks Equipped With 3Z-5207 Towing Bumper {0374,7156,7050}

1997/07/21 New Custom Product Support Literature Is Available For 793C Trucks Equipped With 3Z-5157 Towing Bumper {0374,7156,7050}

1997/07/21 New Custom Product Support Literature Is Available For 785B And 789B Trucks Equipped With Field Installed Flexxaire Fan Drive Arrangement {0374,1359}

1997/07/28 Correction To Backhoe Loader C-Series Parts Manuals{7222,7567}

1997/07/28 High Pressure Turbocharger Improvements Reduce Boost Leaks And Extend Service Life{1052,1060}

1997/07/28 Modification to Engine Shut Down Harness Assembly Reduces 793B Engine Removal And Installation Assembly Time{1408}

1997/07/28 Rerouted Heater Lines Reduces 793 Engine Removal And Installation Time{7554,0701,7304}

1997/07/28 Schematic Available For 793B Off-Highway Trucks{7601,7490}

1997/07/28 Differential Oil Changes Require 1U-9891 Oil Additive {3258,3263,3265}

1997/07/28 Correction to Steering Pump Illustration{4324}

1997/07/28 New Support Spring Has Improved Service Life{4304}

1997/07/28 Correct Position of Shaft Seals And New Plug For Seal Drain Cavity In Pump Groups Improves Service Life{4306,5073,5083}

1997/07/28 Required Maintenance Of Air Cleaner Dust Valves{1050,1051,1055,1068}

1997/07/28 Protection Of Unsealed Electrical Terminations For Machines Used In Corrosive Applications{1400}

1997/08/04 Improvement Made To Wiring Group For Reduction In 793B Engine Removal And Installation Assembly Time{1408}