E977 Unexpected Drive Pump Signal Pressure Detection Disabled
If a diagnostic condition is detected for the Drive Pump Signal Pressure Sensor, event code E977 becomes active in order to warn the operator that protection against E977 Unexpected Drive Pump Signal Pressure Detection has been disabled. Any faulted condition of the Drive Pump Signal Pressure Sensor will cause an Unexpected Drive Pump Signal Pressure Detection Disabled event.
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Caterpillar Information System:
613G Wheel Tractor-Scraper Hydraulic System Service Brake - Adjust
993K Wheel Loader Power Train Final Drive and Wheel - Install
906H2, 907H2 and 908H2 Compact Wheel Loaders Machine Electronic Control E976 Unexpected Drive Pump Signal Pressure Detected
D7E Track-Type Tractor Machine Systems Receiver-Dryer - Remove and Install
D7E Track-Type Tractor Machine Systems Refrigerant Evaporator Coil - Remove and Install
D7E Track-Type Tractor Machine Systems Refrigerant Condenser Fan and Fan Motor - Remove and Install
Repair Procedure for Exhaust Leak{1062} Repair Procedure for Exhaust Leak{1062}
D7E Track-Type Tractor Machine Systems Refrigerant Condenser - Remove and Install
2008/08/11 Improved Tolerances Reduce the Exhaust Leak {1062}
2008/09/29 Routing Of The AccuGrade Harness Has Been Improved {1408}
D7E Track-Type Tractor Machine Systems Refrigerant Accumulator - Remove and Install
2008/08/04 An Improvement Has Been Made to the Mounting Location for the Product Link Module {7606}
2008/08/11 The Adjustment Plug for the Margin Pressure on the Pump Control Valve Has Been Improved {5070, 5455}
2008/08/04 Proper use of the Set Screw on the Pump Control Can Improve Reliability {5070, 5455}
2008/08/11 An Improved Pump Control Valve Is Available For the Implement/Steering Pumps That Are Used on Certain Backhoe Loaders and Small Wheel Loaders {5455}
613G Wheel Tractor-Scraper Fuel Tank Breather - Replace
2008/09/22 Improvements Have Been Made to the Water Lines Groups {1380}
2008/10/06 Improvements To The Medium Wheel Loader Ride Control Accumulator {5004, 5077}
613G Wheel Tractor-Scraper Steering System Vane Pump (Implement, Steering)
2008/09/22 New Actuator Groups Are Now Installed On The Implement Valves {5051, 5264}
613G Wheel Tractor-Scraper Steering System Steering Time - Check
D11T Track-Type Tractor Ladder System
Installation of the 318-8496 Engine Kit (Power Optimization) for the 980H Wheel Loader{1000} Installation of the 318-8496 Engine Kit (Power Optimization) for the 980H Wheel Loader{1000}
2008/09/29 A New Pilot Valve for the Elevator is Now Available on Certain Wheel Tractor-Scrapers {5059, 5304}