Vermeer T855 Commander Trencher Service Handbook Manual – PDF DOWNLOAD
DESCRIPTION:
Vermeer T855 Commander Trencher Service Handbook Manual – PDF DOWNLOAD
USING THE MANUAL :
- This manual provides information and service procedures based upon current machine knowledge and configuration at the time the manual was written. The instructions, illustrations and specifications are based on the latest information available at the time of publication. Due to ongoing efforts to continuously improve the equipment. there may be changes on the machine not yet reflected in this manual.
- IMPORTANT: The content of this manual is based upon information for machines with serial numbers 101 through current. Although your particular machine may use the same information. its direct application is not guaranteed. Vermeer Corporation reserves the right to make changes at any time without notice or obligation. Procedures given in this manual provide one method for completing a given task.
- Additional information may be available through Vermeer Service Support resources. Additional copies of this manual are available through the Vermeer Parts Center. Use the reorder number on the front cover to order additional manuals. Operating instructions are found in the T855 Trencher Operator’s Manual. Lubrication and maintenance procedures are found in the T855 Trencher Maintenance Manual. Refer to ~Reference Publications.” page 1-2 for ordering information.
Reference Publications
Vermeer The following Vermeer Corporation Publications are necessary for reference:
Publications:
- T855 Trencher Operators Manuals 105400Q80. mini: 105400Q81
- T855 Trencher Maintenance Manual: 105400Q82
- T855 Tractor Parts Manual: 105400ANS
- T855 Trencher Parts Manual: 1054OOZFF
- T855 Terrain Leveler Parts Manual: 105400ZHY
- RW855 Rock Cutter Operator’s Manual: 105400863. mini: 105400865.
- RW855 Rock Cutter Maintenance Manual: 105400865
- RW855 Rock Cutter Parts Manual: 105400572
- Vermeer Industrial Dealerships Technicians Shop Manual, order number 105400V80
- Recommended Service Tools Users Guide, order number 105400T69 for
- special tools and test equipment.
- Contact the Vermeer Parts Center to order these publications.
Vendor Publications:
The following vendor publications are optional reference materials:
Caterpiller Engine Service Manual
Contact the appropriate local dealer for this information. Vermeer Corporation does not verify the validity of vendor information within the context of the T855 Trencher machine configuration.
TABLE OF CONTENTS:
Vermeer T855 Commander Trencher Service Handbook Manual – PDF DOWNLOAD
Table of Contents................................................................. 3 Chapter 1: General Information.................................................... 11 Introduction.................................................................. 11 Using the Manual.............................................................. 11 Reference Publications.................................................... 12 Vermeer Publications.................................................. 12 Vendor Publications................................................... 12 Warranty Considerations....................................................... 12 Vermeer Warranty.......................................................... 12 Caterpiller Warranty...................................................... 12 Safety........................................................................ 13 Do Not Modify Machine..................................................... 13 Maintain Operator Presence System......................................... 13 Replace Shields........................................................... 13 Safety Symbol Explanation................................................. 14 Terminology................................................................... 16 System.................................................................... 16 Subsystem................................................................. 16 Circuit................................................................... 16 Reference Designators..................................................... 16 Legend for Reference Designators...................................... 16 Diagrams and Schematics................................................... 31 Chapter Organization...................................................... 31 Chapter 1............................................................. 31 Chapter 2............................................................. 31 Chapter 3............................................................. 31 Chapter 4............................................................. 31 Chapter 5............................................................. 31 Chapter 6............................................................. 31 Chapter 7............................................................. 31 Chapter 8............................................................. 32 Chapter 9............................................................. 32 Chapter 10............................................................ 32 Troubleshooting Guidelines.................................................... 33 Problem-Solving Analysis.................................................. 33 Torque Values............................................................. 34 Machine Shutdown.............................................................. 34 Shutdown Procedure........................................................ 34 T855 Tractor and Attachments Specifications................................... 35 Machine Reference and Orientation......................................... 35 Power Subsystem........................................................... 36 Engine................................................................ 36 Electrical............................................................ 36 Battery............................................................... 36 Fluid Conditioning Subsystem.............................................. 36 Implement Subsystem....................................................... 36 Hydraulic............................................................. 36 Ground Drive Subsystem.................................................... 37 Hydraulic............................................................. 37 Attachment Subsystem...................................................... 38 Hydraulic............................................................. 38 Cross Conveyor Drive Subsystem............................................ 38 Auxiliary Subsystem....................................................... 39 Fluid and Lubricants...................................................... 39 Chapter 2: Power Subsystem........................................................ 41 Overview...................................................................... 41 Circuits/Components....................................................... 41 Circuits.............................................................. 41 Components............................................................ 41 Component Locations....................................................... 44 Power Subsystem Schematic................................................. 57 Theory of Operation - Power Distribution - Key OFF............................ 58 Power Distribution - Key OFF.............................................. 59 Ground Disconnect......................................................... 59 Theory of Operation - Power Distribution - Key ON............................. 60 Power Distribution - Key ON............................................... 61 Theory of Operation - TEC 2000.2 - Tractor Controller......................... 62 Operation................................................................. 63 Sensor Power and Ground................................................... 63 PWM Outputs............................................................... 63 Theory of Operation - TEC 2000.2 - Trencher Controller........................ 64 Operation................................................................. 65 Sensor Power and Ground................................................... 65 Theory of Operation - Grounds................................................. 66 Ground Disconnect and Frame Grounding..................................... 67 Engine Component Grounding................................................ 67 Additional Frame Grounding................................................ 67 Grounding Stud and Dash Grounding......................................... 67 Theory of Operation - Starting Circuit........................................ 68 Start Enable - TEC 2000.2 Function........................................ 69 Cold Start Aid............................................................ 69 Engine Starting Circuit - Start Disabled.................................. 70 Engine Starting Circuit - Start Enable.................................... 72 Engine Start Circuit - Cold Start Aid..................................... 74 Warning and Gauges Circuit................................................ 76 Troubleshooting............................................................... 78 Visual Inspection......................................................... 78 Repair........................................................................ 79 Clutch.................................................................... 79 Overview.............................................................. 79 Special Tools and Materials........................................... 79 Remove Clutch......................................................... 80 Clutch Inspection..................................................... 83 Clutch Installation Overview.......................................... 85 Reset a Used Clutch................................................... 86 Clutch Assembly and Installation...................................... 87 Install Clutch Cable.................................................. 94 Chapter 3: Fluid Conditioning Subsystem........................................... 95 Overview...................................................................... 95 Circuits/Components....................................................... 95 Circuits/Functions.................................................... 95 Components............................................................ 95 Component Locations....................................................... 97 Subsystem Schematic.......................................................103 Oil Filtration/Cooling Function - Theory of Operation.........................104 Attachment Subsystem......................................................104 Ground Drive Functions....................................................105 Implement, Conveyor/Auxiliary Functions...................................106 Charge Pressure Theory of Operation...........................................107 General...................................................................108 Attachment Charge Pressure................................................108 Ground Drive Charge Pressure..............................................108 Right and Left Track Charge Pressure Function.............................109 Attachment Drive Charge Pressure Function.................................110 Pilot Pressure Theory of Operation............................................111 Pilot Pressure............................................................111 Pilot Pressure Function - Supply/Relief Functions.............................112 Implement Subsystem - Park Brake Release Function.........................113 Pilot Function - Ground Drive 2-Speed Mode................................114 Pilot Pressure - Rock Cutter 2-Speed Function.............................116 Load Sense Function.......................................................117 Load Sense - Theory of Operation..............................................118 Load Sense Function - Standby Mode........................................119 Load Sense Function - Partial Demand Mode.................................120 Load Sense Function - Full Demand Mode....................................121 Load Sense Function - Hi Limit Mode.......................................122 Troubleshooting...............................................................123 Visual Inspection.........................................................123 Chapter 4: Implement Subsystem....................................................125 Overview......................................................................125 Circuits/Components.......................................................125 Functions.............................................................125 Components............................................................125 Component Locations.......................................................130 Subsystem Schematic.......................................................141 Subsystem Schematic - Auto Tilt...........................................142 Theory of Operation - Implement Valve.........................................144 Oil Supply................................................................145 Theory of Operation - Auto Down Pressure Function.............................146 Auto Down Pressure Function...............................................146 Theory of Operation - Machine Tilt (Manual)...................................147 Machine Tilt Functions....................................................147 Theory of Operation - Auto Tilt Electrical....................................148 Auto Tilt General Theory..................................................148 Theory of Operation - Auto Tilt Hydraulic.....................................149 Auto Tilt Electrical/Hydraulic Theory of Operation........................149 Track Level Function - Left Track Out Mode................................150 Track Level Function - Left Track In Mode.................................151 Track Level Function - Right Track Out Mode...............................152 Track Level Function - Right Track In Mode................................153 Machine Tilt Right Track Function - Raise Mode............................154 Machine Tilt Right Track Function - Lower Mode............................155 Machine Tilt Left Track Function - Raise Mode.............................156 Machine Tilt Left Track Function - Lower Mode.............................157 Auto Tilt Function - Raise Left Mode......................................158 Auto Tilt Function - Raise Right Mode.....................................160 Implement Subsystem - Cab Lift Function - Lift Mode.......................162 Implement Subsystem - Cab Lift Function - Lower Mode......................163 Implement Subsystem - Trench Cleaner Fold Function - Fold Up Mode.........164 Implement Subsystem - Trench Cleaner Fold Function - Fold Down Mode.......165 Implement Subsystem - Conveyor Fold Function - Fold Up Mode...............166 Implement Subsystem - Conveyor Fold Function - Fold Down Mode.............167 Implement Subsystem - Conveyor Shift Function - Shift Left Mode...........168 Implement Subsystem - Conveyor Shift Function - Shift Right Mode..........169 Implement Subsystem - Boom Lift Function - Raise Boom Mode................170 Implement Subsystem - Boom Lift Function - Lower Boom Mode................171 Dirt Drags Function - Raise Mode..........................................172 Dirt Drags Function - Lower Mode..........................................173 Implement Subsystem - Rock Cutter Stabilizer Lift Function - Lift Mode....174 Implement Subsystem - Rock Cutter Stabilizer Function - Lower Mode........175 Auto Down Pressure Function (Rock Cutter) - Down Pressure Mode............176 Auto Down Pressure Function (Rock Cutter) - Relieve Pressure Mode.........178 Troubleshooting...............................................................180 Visual Inspection.........................................................180 Repair........................................................................181 Hydraulic Repair..........................................................181 General Guidelines When Servicing Hydraulic System........................182 Avoid Oil Contamination...............................................182 Implement System Pressures................................................183 Special Tools and Materials...........................................183 Implement Pump........................................................183 Chapter 5: Ground Drive Subsystem.................................................185 Overview......................................................................185 Circuits/Components.......................................................185 Functions.............................................................185 Components............................................................185 Component Locations.......................................................187 Subsystem Schematic - Ground Drive........................................195 Theory of Operation - Ground Drive............................................196 Ground Drive Pump Operation...............................................197 Ground Drive Motors.......................................................197 Ground Drive Pumps........................................................197 Ground Drive Control......................................................197 Track Drive Function - Hi Speed Forward Mode..............................198 Track Drive Function - Hi Speed Reverse Mode..............................200 Track Drive Function - Lo Speed Forward Mode..............................202 Track Drive Function - Lo Speed Reverse Mode..............................204 Troubleshooting...............................................................206 Visual Inspection.........................................................206 Repair........................................................................207 Hydraulic Repair..........................................................207 General Guidelines When Servicing Hydrostatic Drive.......................207 Avoid Oil Contamination...............................................208 Ground Drive System Pressures.............................................209 Special Tools and Materials...........................................209 Pump Bay..............................................................209 Left and Right Track Pumps............................................210 Chapter 6: Attachment Subsystem...................................................213 Overview......................................................................213 Circuits/Components.......................................................213 Functions.............................................................213 Components............................................................213 Component Locations.......................................................215 Subsystem Schematic.......................................................222 Theory of Operation...........................................................224 Attachment Pump and Motor Operation.......................................225 Attachment Drive Control..................................................225 Trencher Function - Forward Mode..........................................226 Trencher Function - Reverse Mode..........................................228 Troubleshooting...............................................................230 Visual Inspection.........................................................230 Repair........................................................................231 Hydraulic Repair..........................................................231 General Guidelines When Servicing Hydrostatic Drive.......................231 Avoid Oil Contamination...............................................232 Attachment Drive System Pressures.........................................233 Special Tools and Materials...........................................233 Top Right Attachment Pump.............................................233 Top Left Attachment Pump..............................................234 Bottom Left Attachment Pump...........................................236 Attachment Motor......................................................238 Conveyor Pump.........................................................239 Flushing Pump.........................................................240 Auxiliary Pump........................................................241 Trencher Component Locations..............................................241 Trencher Drive Motor/Torque Arm Assembly..................................242 Special Tools and Materials...........................................242 Remove................................................................242 Install...............................................................244 Trencher Drive Motor......................................................246 Special Tools and Materials...........................................246 Remove Drive Motor from Torque Arm....................................246 Install Drive Motor onto Torque Arm...................................246 Digging Chain.............................................................246 Special Tools and Materials...........................................246 Remove Chain..........................................................247 Install Chain.........................................................248 Measure Chain Tension.................................................249 Adjust Chain Tension..................................................249 Trench Cleaner/Restraint Bar..............................................252 Special Tools and Materials...........................................252 Adjust................................................................252 End Idler Wheel...........................................................254 Remove................................................................254 Install...............................................................254 End Idler Bearings and Seals..............................................255 Special Tools and Materials...........................................255 Remove................................................................255 Install...............................................................256 Headshaft Assembly........................................................256 Special Tools and Materials...........................................256 Remove................................................................256 Install...............................................................259 Headshaft Bearings........................................................260 Overview..............................................................260 Special Tools and Materials...........................................261 Remove Bearing from Cab End of Headshaft..............................262 Remove Bearing from Trencher Motor End of Headshaft...................263 Install Bearing onto Cab End of Headshaft.............................264 Install Bearing onto Trencher Motor End of Headshaft..................266 Seat Components Together..............................................269 Heat Bearings.........................................................271 Duo-Cone Seals............................................................271 Special Tools and Materials...........................................271 Install...............................................................272 Chapter 7: Auxiliary Hydraulic Subsystem..........................................275 Overview......................................................................275 Circuits/Components.......................................................275 Functions.............................................................275 Components............................................................275 Component Locations.......................................................277 Theory of Operation/Subsystem Schematic.......................................279 General Operation.........................................................279 Electrical Controls.......................................................279 Auxiliary Hydraulic Function..............................................280 Troubleshooting...............................................................281 Visual Inspection.........................................................281 Chapter 8: Cross Conveyor Subsystem...............................................283 Overview......................................................................283 Circuits/Components.......................................................283 Functions.............................................................283 Components............................................................283 Component Locations.......................................................284 Subsystem Schematic.......................................................286 Theory of Operation...........................................................288 Operation.................................................................288 Conveyor Function - Forward Mode..........................................289 Conveyor Function - Reverse Mode..........................................290 Troubleshooting...............................................................291 Visual Inspection.........................................................291 Repair........................................................................293 Hydraulic Repair..........................................................293 General Guidelines When Servicing Hydraulic System........................294 Avoid Oil Contamination...............................................294 Cross Conveyor System Pressures...........................................295 Special Tools and Materials...........................................295 Conveyor Pump.........................................................295 Chapter 9: Conveyor Subsystem.....................................................297 Overview......................................................................297 Circuits/Components.......................................................297 Functions.............................................................297 Components............................................................297 Component Locations.......................................................298 Subsystem Schematic.......................................................300 Theory of Operation/Subsystem Schematic.......................................301 Operation.................................................................301 Conveyor Function - Forward Mode..........................................302 Conveyor Function - Reverse Mode..........................................303 Troubleshooting...............................................................304 Visual Inspection.........................................................304 Repair........................................................................305 Hydraulic Repair..........................................................305 General Guidelines When Servicing Hydraulic System........................306 Avoid Oil Contamination...............................................306 Auxiliary Conveyor System Pressures.......................................307 Special Tools and Materials...........................................307 Auxiliary Pump........................................................307 Chapter 10: Rock Cutter Subsystem.................................................309 Overview......................................................................309 Circuits/Components.......................................................309 Functions.............................................................309 Components............................................................309 Component Locations.......................................................311 Subsystem Schematic.......................................................318 Theory of Operation...........................................................320 Attachment Pump and Motor Operation.......................................321 Attachment Drive Control..................................................321 Rock Cutter Function - Forward Mode.......................................322 Rock Cutter Function - Reverse Mode.......................................324 Troubleshooting...............................................................326 Visual Inspection.........................................................326
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