Commissioning Procedure for 794 AC, 796 AC, and 798 AC Off-Highway Trucks is Updated {1000, 7000, 7961}
- Mining Truck
- 794 AC (S/N: HRT1-UP)
- Off-Highway Truck/Tractor
- 794 AC (S/N: MN51-UP; MT51-UP)
- 796 (S/N: HRY1-UP; HRZ1-UP)
- 798 (S/N: ST71-UP)
- 796 (S/N: HRY1-UP; HRZ1-UP)
Sections of Special Instruction, SEHS0003, "Commissioning Procedure for the 794 AC, 796 AC, and 798 AC Off-Highway Trucks" have been updated.
Refer to the updated "High-Voltage System Megger Test" and "Preliminary Set-Up Prior to Starting the Engine" sections within the procedure.
High-Voltage System Megger Test
Show/hide table
| |
| Illustration 1 | g06402940 |
|
Inverter cabinet front testing location covers | |
Show/hide table
| |
| Illustration 2 | g03788807 |
|
Inverter cabinet rear testing location cover | |
Some Megger testing locations and methods have been updated for greater efficiency during testing.
Preliminary Set-Up Prior to Starting the Engine
Show/hide table
| |
| Illustration 3 | g06400470 |
|
Brake air purge locations | |
Updated brake purging information during machine commissioning helps brake performance and reliability.
Refer to the most recent version of Special Instruction, SEHS0003, "Commissioning Procedure for the 794 AC, 796 AC, and 798 AC Off-Highway Trucks" for the updated information.
Caterpillar Information System:
The Dosing Cabinet and Clean Emissions Module for the Retrofit Aftertreatment is Discontinued {108X} The Dosing Cabinet and Clean Emissions Module for the Retrofit Aftertreatment is Discontinued {108X}
A New Crankcase Breather Assembly Clamp is Now Used for Certain C175 Commercial Engines {1317} A New Crankcase Breather Assembly Clamp is Now Used for Certain C175 Commercial Engines {1317}
New Coolant Lines for Pump Electronic Tank Unit (PETU) are Now Used on Certain Off-Highway Trucks {108U, 1380} New Coolant Lines for Pump Electronic Tank Unit (PETU) are Now Used on Certain Off-Highway Trucks {108U, 1380}
320 GC, 320 and 323 Excavator Machine Systems Specifications Swing Motor
Rain Gutter Panel Support May Be Installed Upside Down On Certain Generator Sets {7263, 7274} Rain Gutter Panel Support May Be Installed Upside Down On Certain Generator Sets {7263, 7274}
Fogging May Appear Inside Monitor On Certain Mini Hydraulic Excavators {7490} Fogging May Appear Inside Monitor On Certain Mini Hydraulic Excavators {7490}
Procedure to Replace Commutator End (CE) Housing of Starter Motor On All Cat® Products {1408, 1450, 1453} Procedure to Replace Commutator End (CE) Housing of Starter Motor On All Cat® Products {1408, 1450, 1453}
Procedure to Replace Armature of Starter Motor On All Cat® Products {1408, 1450, 1453} Procedure to Replace Armature of Starter Motor On All Cat® Products {1408, 1450, 1453}
New Control and Panel Harness Assemblies are Now Used on Certain Cat® Engines {1408} New Control and Panel Harness Assemblies are Now Used on Certain Cat® Engines {1408}
Drive End Bearing Service For 50/75 Amp Brushless Alternators {1405} Drive End Bearing Service For 50/75 Amp Brushless Alternators {1405}
Updated Wiring Configuration is Now Used on Certain 3412 Generator Sets {1404} Updated Wiring Configuration is Now Used on Certain 3412 Generator Sets {1404}
Exhaust Rain Cap is Now Repositioned on Certain C7.1 Generator Set Engines {1072} Exhaust Rain Cap is Now Repositioned on Certain C7.1 Generator Set Engines {1072}
The Wiper Motor May Fail on Certain Next Generation Hydraulic Excavators {7305} The Wiper Motor May Fail on Certain Next Generation Hydraulic Excavators {7305}
140 Motor Grader Machine Systems Steering Accumulator - Remove and Install
New Improved Fuel Level Sensor Assembly is Now Used on Certain Generator Sets and Power Modules {1439, 7481} New Improved Fuel Level Sensor Assembly is Now Used on Certain Generator Sets and Power Modules {1439, 7481}
Box Handling and Storage of Cat® PVT 110 and PVT 110 ARC Photo Voltaic Module {1471} Box Handling and Storage of Cat® PVT 110 and PVT 110 ARC Photo Voltaic Module {1471}
Adding the Jacket Water Coolant Pressure Monitor to the Digital Control Unit {191W, 7451} Adding the Jacket Water Coolant Pressure Monitor to the Digital Control Unit {191W, 7451}
Troubleshooting Procedure is Now Available for Water In Liquid Level Sensor on Certain Excavators {7422} Troubleshooting Procedure is Now Available for Water In Liquid Level Sensor on Certain Excavators {7422}
301.5, 301.6, 301.7 CR, 301.8, and 302 CR Mini Hydraulic Excavator Machine System General Calibration Information - Cat ET
A 337-2 Code Will Not Reset on Certain C32 and 3500 Generator Sets with ADEM III Electronic Control Modules {1901} A 337-2 Code Will Not Reset on Certain C32 and 3500 Generator Sets with ADEM III Electronic Control Modules {1901}
Improved Vent Fan is Now Used on Certain Generator Sets {4450} Improved Vent Fan is Now Used on Certain Generator Sets {4450}
Channel 1 Videos for Certain Large Off-Highway Trucks are Now Available {0374, 7000} Channel 1 Videos for Certain Large Off-Highway Trucks are Now Available {0374, 7000}
Intermittent and Startup Satellite Connection Issues May Occur on Certain MS952 and MS955 Global Navigational Satellite System (GNSS) Receivers {1408, 7010, 7606, 7620} Intermittent and Startup Satellite Connection Issues May Occur on Certain MS952 and MS955 Global Navigational Satellite System (GNSS) Receivers {1408, 7010, 7606, 7620}
Use Proper Tooling And Torque When Servicing Fuel Injection Lines {0701, 1252} Use Proper Tooling And Torque When Servicing Fuel Injection Lines {0701, 1252}