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:
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
VERMEER T855 COMMANDER TRENCHER SERVICE HANDBOOK MANUAL – PDF DOWNLOAD:
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