Yanmar RT70 Operator's Manual
  1. Manuals
  2. Brands
  3. Yanmar Manuals
  4. Lawn Mower
  5. RT70
  6. Operator's manual
Yanmar RT70 Operator's Manual

Yanmar RT70 Operator's Manual

Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
RT70
Yanmar® 4TNV98CT, equipped with tires or tracks
Operator's
Manual
Issue 2.0
053-3307
CMW®
Original Instruction

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the RT70 and is the answer not in the manual?

Questions and answers

Related Manuals for Yanmar RT70

Summary of Contents for Yanmar RT70

  • Page 1 RT70 Yanmar® 4TNV98CT, equipped with tires or tracks Operator’s Manual Issue 2.0 053-3307 CMW® Original Instruction...

  • Page 2: Table Of Contents

    RT70 Operator’s Manual Overview - 1 Overview Chapter Contents Serial Number Location ..... 2 Intended Use ......3 Equipment Modification .

  • Page 3: Serial Number Location

    RT70 Operator’s Manual Overview - 2 Serial Number Location Serial Number Location Record serial numbers and date of purchase in spaces provided. Serial number is located as shown. t63om001h21.eps t63om001h21.eps Item Date of manufacture Date of purchase Machine serial number...

  • Page 4: Intended Use

    RT70 Operator’s Manual Overview - 3 Intended Use Intended Use The RT70 is a riding trencher designed to install buried service lines of various sizes using a variety of Ditch Witch® attachments. Attachment Max. width/diameter Max. depth BH70 backhoe 18” (460mm) bucket 89”...

  • Page 5: Machine Components

    RT70 Operator’s Manual Overview - 4 Machine Components Machine Components t63om002h21.eps t63om002h21.eps 1. Rollover Protective Structure (ROPS) 4. Engine compartment 2. Operator station 5. Backfill blade* 3. Center console *Optional...

  • Page 6: Regulatory Notices

    RT70 Operator’s Manual Overview - 5 Regulatory Notices Regulatory Notices Your equipment is designed and tested to meet regulatory codes and standards for electromagnetic compatibility. Digital electronics including wireless devices may be options on your equipment. United States Your equipment may contain the following: FCC ID: XPYLISAU200 or FCC ID: XMR201903EG25G This device complies with Part 15 of the FCC Rules.

  • Page 7: Operator Orientation

    RT70 Operator’s Manual Overview - 6 Operator Orientation Operator Orientation IMPORTANT: Top view of machine is shown. 1. Front 2. Right side 3. Rear 4. Left side t63om003h21.eps t63om003h21.eps Operating Area Operate only from designated seat(s). t63om004h21.eps t63om004h21.eps...

  • Page 8: About This Manual

    RT70 Operator’s Manual Overview - 7 About This Manual About This Manual This manual contains information for the proper use of this machine. Cross references such as “See page 50” will direct you to detailed procedures. Bulleted Lists Bulleted lists provide helpful or important information or contain procedures that do not have to be performed in a specific order.
  • Page 9 RT70 Operator’s Manual Overview - 8 About This Manual...

  • Page 10: Foreword

    RT70 Operator’s Manual Foreword - 9 Foreword This manual is an important part of your equipment. It provides safety information and operation instructions to help maintain your Ditch Witch equipment. Read this manual before using your equipment. Keep it with the equipment at all times for future reference.
  • Page 11 RT70 Operator’s Manual Foreword - 10 RT70 Operator’s Manual equipped with tires or track Issue number 2.0/OM-07/21 Part number 053-3307 Copyright 2021 by The Charles Machine Works, Inc. and Ditch Witch are registered trademarks of The Charles Machine Works, Inc. Other trademarks and trade names are those of their respective owners.
  • Page 12 RT70 Operator’s Manual Contents - 11 Contents Overview Machine serial number, information about the type of work this machine is designed to perform, basic machine components, and how to use this manual Foreword Part number, revision level, and publication date or this manual, and factory contact...
  • Page 13 RT70 Operator’s Manual Contents - 12 Trench Procedures for trenching Systems and Equipment Chain, teeth, sprockets, and optional equipment Complete the Job Procedures for restoring the jobsite and rinsing and storing equipment Service Service intervals and instructions for this machine including lubrication, replacement...

  • Page 14: Safety

    RT70 Operator’s Manual Safety - 13 Safety Chapter Contents For additional precautions, see “Prepare” chapter. Safety Alert Classification ....14 Guidelines ....... 15 Emergency Procedures .

  • Page 15: Safety Alert Classification

    RT70 Operator’s Manual Safety - 14 Safety Alert Classifications Safety Alert Classifications These classifications and the icons defined on the following pages work together to alert you to situations which could be harmful to you, jobsite bystanders or your equipment. When you see these words and icons in the book or on the machine, carefully read and follow all instructions.

  • Page 16: Guidelines

    RT70 Operator’s Manual Safety - 15 Guidelines Guidelines Misuse of machine can cause death or serious injury. Read and understand operator’s manual and all other safety instructions before use. Know how to use all controls. Raised component. Crushing can cause death or serious injury.

  • Page 17: Emergency Procedures

    RT70 Operator’s Manual Safety - 16 Emergency Procedures • Contact your Ditch Witch dealer if you have any questions about operation, maintenance, or equipment use. • Complete the equipment checklist located at www.ditchwitch.com/safe. Emergency Procedures Underground utilities. Contact can cause death or serious injury.

  • Page 18: If An Electric Line Is Damaged

    RT70 Operator’s Manual Safety - 17 Emergency Procedures If an Electric Line is Damaged If you suspect an electric line has been damaged, DO NOT MOVE. Take the following actions. The order and degree of action will depend on the situation.
  • Page 19 RT70 Operator’s Manual Safety - 18 Emergency Procedures...

  • Page 20: Machine Safety Alerts

    RT70 Operator’s Manual Safety - 19 RT70 Safety Alerts RT70 Safety Alerts Tiedown location. See Transport chapter for more information. Pre-heater. Fire or explosion can cause death or serious injury. Never use starter fluid. Moving machine. Fall can cause death or serious injury.
  • Page 21 RT70 Operator’s Manual Safety - 20 RT70 Safety Alerts Misuse of machine can cause death or serious injury. Read and understand operator’s manual and all other safety instructions before use. Know how to use all controls. Rollover. Crushing can cause death or serious...
  • Page 22 RT70 Operator’s Manual Safety - 21 Attachment Safety Alerts Attachment Safety Alerts BH70 Tiedown location. See Transport chapter for more information. Moving parts. Contact can cause serious injury. Stay away. Lifted load. Crushing can cause death or serious injury. Stay away from lifted load and its range of movement.
  • Page 23 RT70 Operator’s Manual Safety - 22 Attachment Safety Alerts CT70 Tiedown location. See Transport chapter for more information. Moving digging teeth. Contact will cause death or serious injury. Stay at least 6ft (2m) away. DANGER stripe decal. See Parts Manual for replacement part...
  • Page 24 RT70 Operator’s Manual Safety - 23 Attachment Safety Alerts ST70 Tiedown location. See Transport chapter for more information. Moving parts. Contact can cause serious injury. Stay away. Moving digging teeth. Contact will cause death or serious injury. Stay at least 6ft (2m) away.
  • Page 25 RT70 Operator’s Manual Safety - 24 Attachment Safety Alerts VP70 Tiedown location. See Transport chapter for more information. Lifted load. Crushing can cause death or serious injury. Stay away from lifted load and its range of movement. Moving parts. Contact can cause serious injury.
  • Page 26 RT70 Operator’s Manual Safety - 25 Attachment Safety Alerts MT12 Thrown objects. Impact can cause injury. Wear hard hat and safety glasses. Moving digging teeth. Contact will cause death or serious injury. Stay at least 6ft (1.8m) away. Moving parts. Contact can cause serious injury.
  • Page 27 RT70 Operator’s Manual Safety - 26 Attachment Safety Alerts Tiedown location. See Transport chapter for more information. Silica dust. Exposure can cause lung disease. Use breathing protection.
  • Page 28 RT70 Operator’s Manual Safety - 27 Attachment Safety Alerts MT16 Moving parts. Contact can cause serious injury. Stay away. Thrown objects. Impact can cause injury. Wear hard hat and safety glasses. Moving digging teeth. Contact will cause death or serious injury. Stay at least 6ft (1.8m) away.
  • Page 29 RT70 Operator’s Manual Safety - 28 Attachment Safety Alerts Tiedown location. See Transport chapter for more information. Silica dust. Exposure can cause lung disease. Use breathing protection.
  • Page 30 RT70 Operator’s Manual Safety - 29 Attachment Safety Alerts RC20 Moving parts. Contact can cause serious injury. Stay away. Tiedown location. See Transport chapter for more information. Lifted load. Crushing can cause death or serious injury. Stay away from lifted load and its range of movement.
  • Page 31 RT70 Operator’s Manual Safety - 30 Attachment Safety Alerts...

  • Page 32: Prepare

    RT70 Operator’s Manual Prepare - 31 Prepare Chapter Contents For additional precautions, see “Safety” chapter. Prepare Jobsite ......32 •...

  • Page 33: Prepare Jobsite

    RT70 Operator’s Manual Prepare - 32 Prepare Jobsite Prepare Jobsite Underground utilities. Contact can cause death or serious injury. Locate and verify underground utilities before digging or drilling. To help avoid injury: • Expose lines by careful hand digging or soft excavation before operating equipment. Use appropriate equipment and procedures for exposing utility lines.

  • Page 34: Identify Hazards

    RT70 Operator’s Manual Prepare - 33 Prepare Jobsite Identify Hazards Inspect jobsite before transporting equipment. Check for the following: • overall grade or slope • changes in elevation such as hills or open trenches • obstacles such as buildings, railroad crossings, or streams •...

  • Page 35: Classify Jobsite

    RT70 Operator’s Manual Prepare - 34 Prepare Jobsite Classify Jobsite Select a Classification Jobsites are classified according to underground hazards present, not by line being installed. Jobsite may have more than one classification. If working . . . then classify jobsite as . . .

  • Page 36: Arrange For Traffic Control

    RT70 Operator’s Manual Prepare - 35 Prepare Jobsite Crystalline Dust Jobsite Precautions Silica dust. Exposure can cause lung disease or cancer. Use breathing protection. Crystalline silica dust is a naturally occurring substance found in soil, sand, concrete, granite, and quartz.

  • Page 37: Prepare Operator

    RT70 Operator’s Manual Prepare - 36 Prepare Operator Prepare Operator Jobsite hazards. Exposure can cause death or serious injury. Use correct equipment and work methods. Use and maintain appropriate safety equipment. To help avoid injury: • Wear personal protective equipment including hard hat, safety eye wear, foot protection, hearing protection, and gloves (except when near rotating equipment).

  • Page 38: Prepare Equipment

    RT70 Operator’s Manual Prepare - 37 Prepare Equipment Prepare Equipment Check Supplies • fuel • keys • marking flags or paint • notepad and pencil • spare fuses • lubricants • extra batteries for accessories and equipment Check Equipment Fluid Levels •...

  • Page 39: Assemble Accessories

    RT70 Operator’s Manual Prepare - 38 Prepare Equipment Assemble Accessories Fire Extinguisher NOTICE: Do not drill into ROPS to mount extinguisher. Clamp a fire extinguisher near the power unit but away from possible points of ignition where shown. The fire extinguisher should always be classified for both oil and electric fires.

  • Page 40: Controls

    RT70 Operator’s Manual Controls - 39 Controls Chapter Contents Battery Disconnect ......40 Console, Backhoe ......41 Console, Center .

  • Page 41: Battery Disconnect

    RT70 Operator’s Manual Controls - 40 Battery Disconnect Battery Disconnect t63om006h21.eps t63om006h21.eps Item Description IMPORTANT Battery disconnect switch NOTICE: To connect, move right. To disconnect, move left. • Do not disconnect with engine running. • To avoid equipment damage, wait two minutes after turning engine off before disconnecting battery.

  • Page 42: Console, Backhoe

    RT70 Operator’s Manual Controls - 41 Console, Backhoe Console, Backhoe t63om007h21.eps t63om007h21.eps IMPORTANT: Operator must be in backhoe seat for BH70 controls to function. 1. Seat lock pin 8. Remote start switch 2. Left stabilizer control 9. Bucket/Dipper control 3. Remote backfill blade control* 10.
  • Page 43 RT70 Operator’s Manual Controls - 42 Console, Backhoe Item Description IMPORTANT 2. Left stabilizer control To lower, press left. To raise, press right. 3. Remote backfill blade To lower, press top. control To raise, press bottom. 4. Work light switch To turn on, press right.
  • Page 44 RT70 Operator’s Manual Controls - 43 Console, Backhoe Item Description IMPORTANT 7. Remote throttle control To increase engine speed, press top. To decrease, press bottom. c00ic243h.eps 8. Remote start switch To start engine, press. IMPORTANT: Ignition switch on right console must be on to start engine remotely.
  • Page 45 RT70 Operator’s Manual Controls - 44 Console, Backhoe Item Description IMPORTANT 11. Swing lock To lock: See “Stow lock control” on page 42. 1. Raise boom fully. NOTICE: Always use swing lock during transport. 2. Pull swing lock handle. 3. Insert swing lock pin.

  • Page 46: Console, Center

    RT70 Operator’s Manual Controls - 45 Console, Center Console, Center t63om008h21.eps t63om008h21.eps 1. Ground drive direction/speed control 5. Hazard light switch * 2. Auxiliary outlet 6. Front work light switch * 3. USB 7. Blank 4. Work light switch * 8.
  • Page 47 RT70 Operator’s Manual Controls - 46 Console, Center Item Description IMPORTANT 1. Ground drive direction/ To move tractor forward, Must be in forward or reverse speed control move lever to the upper position for ground drive foot control position. function.
  • Page 48 RT70 Operator’s Manual Controls - 47 Console, Center Item Description IMPORTANT 5. Hazard light switch To turn on, press top. To turn off, press bottom. c00ic600w.eps 6. Front work light switch To turn on, press top. To turn off, press bottom.

  • Page 49: Console, Left

    RT70 Operator’s Manual Controls - 48 Console, Left Console, Left t63om009h21.eps t63om009h21.eps 1. Reel carrier selector switch 7. Saw/Trench slide control switch* 2. Reel carrier lift control 8. Cruise control speed dial 3. Dig/Drive 9. Cruise control selector switch 4. Axle lock switch 10.
  • Page 50 RT70 Operator’s Manual Controls - 49 Console, Left Item Description IMPORTANT 1. Reel carrier selector To enable reel carrier control switch at backfill blade/reel winder control, press left. To enable to backfill blade control, press right. c00ic642w.eps 2. Reel carrier lift control To lower, press left.
  • Page 51 RT70 Operator’s Manual Controls - 50 Console, Left Item Description IMPORTANT 5. Parking brake switch To set, press left. To release, press right. c00ic147w.eps 6. Throttle To increase speed, move forward. To decrease, pull back. 7. Saw/Trencher slide control switch To slide saw right, move forward.
  • Page 52 RT70 Operator’s Manual Controls - 51 Console, Left Item Description IMPORTANT 9. Cruise control selector To turn on, press left. Turn on cruise control only when: switch To turn off, press right. • ground drive motor control is in •...

  • Page 53: Console, Right

    RT70 Operator’s Manual Controls - 52 Console, Right Console, Right 4 4 5 5 t63om010h21.eps t63om010h21.eps 1. Horn button 10. Rear steer adjustment switch 2. Ignition switch 11. Engine shutdown override 3. Plow lift control 12. Rear steer switch/Super rear steer switch* 4.
  • Page 54 RT70 Operator’s Manual Controls - 53 Console, Right Item Description IMPORTANT 1. Horn button To sound horn, press. c00ic044h.eps 2. Ignition switch To activate accessories, turn See “Drive” on page 83. right. To start engine, turn right and hold. To shut off machine, turn left.
  • Page 55 RT70 Operator’s Manual Controls - 54 Console, Right Item Description IMPORTANT 6. USB Allows technicians to For use only by qualified Ditch Witch download job log files for technicians. optional Depth Meter. c00ic250w.eps 7. Saw lift/Trencher lift To lower, push forward.
  • Page 56 RT70 Operator’s Manual Controls - 55 Console, Right Item Description IMPORTANT 9. AST switch/Trench NOTICE: Display will indicate when to cleaner lift control press ATS switch. AST switch To activate AST logic, press. c00ic797h.eps Trench cleaner lift control To lower, push forward.
  • Page 57 RT70 Operator’s Manual Controls - 56 Console, Right Item Description IMPORTANT 11. Engine shutdown If engine shutdown indicator This control allows a temporary override switch comes on, press to delay override of engine shutdown. engine shutdown for 30 seconds. NOTICE: After 30 seconds, engine will...
  • Page 58 RT70 Operator’s Manual Controls - 57 Console, Right Item Description IMPORTANT 15. Super rear steer mode To engage auto-crab mode, selector switch press left. To engage auto-center, return to center center. To engage auto-coordinated, press right. c00ic800h.eps 16. Backfill blade/Reel...
  • Page 59 RT70 Operator’s Manual Controls - 58 Console, Right Item Description IMPORTANT 17. Display Displays graphic symbols for See “Display” on page 59. indicators and conditions.

  • Page 60: Display

    RT70 Operator’s Manual Controls - 59 Display Display Gauges and Indicators 10:10 AUTO X100 1938 1500 1750 °F 00.0 t63om011h21.eps t63om011h21.eps 1. Engine speed 9. Ground drive direction gauge 10. Rear steer status indicator 2. Tachometer 3. Hourmeter 11. Rear steer direction gauge 12.
  • Page 61 RT70 Operator’s Manual Controls - 60 Display Item Description IMPORTANT 2. Tachometer Displays engine speed. 3. Hourmeter Displays number of hours engine has been running. 4. Real time clock Displays time. 5. Cruise control set speed Displays numeric Only shown when cruise selector gauge value for speed.
  • Page 62 RT70 Operator’s Manual Controls - 61 Display Item Description IMPORTANT 11. Rear steer direction Displays rear steer Icon displays direction of tracks. gauge direction and numeric value of tire/track turn percentage. 12. Backfill blade float Lights when backfill indicator blade is in float.
  • Page 63 RT70 Operator’s Manual Controls - 62 Display Gauges and Indicators 10:10 AUTO X100 1938 1500 1750 °F 00.0 10 10 t63om013h21.eps t63om013h21.eps 1. Fuel gauge 6. Engine coolant temperature gauge 2. Engine caution/stop indicator 7. Voltmeter 3. Hydraulic fluid temperature indicator 8.
  • Page 64 RT70 Operator’s Manual Controls - 63 Display Item Description IMPORTANT 3. Hydraulic fluid Lights when hydraulic temperature indicator fluid temperature is too high. 4. Hydraulic fluid filter Lights when hydraulic During cold weather, light will stay on indicator filter is restricted.

  • Page 65: Soft Keys

    RT70 Operator’s Manual Controls - 64 Display Soft Keys 10:10 AUTO X100 1938 1500 1750 °F 00.0 t63om092h21.eps t63om092h21.eps Item Description IMPORTANT 1. Hide/Recall diagnostics To hide diagnostic message, press twice. To recall, press once. 2. Main menu key To select main menu,...

  • Page 66: Main Menu

    RT70 Operator’s Manual Controls - 65 Display Main Menu t63om084h21.eps t63om084h21.eps 1. Anti Stall Technology (AST) key 5. Machine configuration key 2. User settings key 6. Software version key 3. Attachment configuration key 7. Exhaust cleaning key 8. Diagnostic menu key 4.
  • Page 67 RT70 Operator’s Manual Controls - 66 Display Item Description IMPORTANT 5. Machine configuration To access machine key. configuration menu, press. 6. Software version key To view software version, press. 7. Exhaust cleaning menu To display exhaust cleaning Parked cleanings can be initiated and...

  • Page 68: Display Pop-Up Messages

    RT70 Operator’s Manual Controls - 67 Display Display Pop-Up Messages Display will automatically show pop-up messages for start interlock and exhaust cleaning systems when needed. Screen will return to normal once conditions are met. Start Interlock For machine to start, operator must be in seat and ground drive direction control must be in neutral. If one or more of these conditions is not met, a pop-up message will appear.

  • Page 69: Display, Trench Depth Meter

    RT70 Operator’s Manual Controls - 68 Display, Trench Depth Meter Display, Trench Depth Meter Trench Indicators AUTO 10:17 X100 1938 1500 1750 °F 00.0 t63om098h21.eps t63om098h21.eps Item Description IMPORTANT 1. Depth indicator Displays current trench depth. 2. Trench rate indicator Displays current trench speed.

  • Page 70: Soft Keys

    RT70 Operator’s Manual Controls - 69 Display, Trench Depth Meter Soft Keys AUTO 10:17 X100 1938 1500 1750 °F 00.0 t63om099h21.eps t63om099h21.eps Item Description IMPORTANT 1. Depth meter screen key To enter depth meter screen, press. 2. Main menu key To return to main menu, press.

  • Page 71: Depth Meter Screen

    RT70 Operator’s Manual Controls - 70 Display, Trench Depth Meter Depth Meter Screen 20 20 19 19 Depth Meter 06:57 18 18 5 0ft 10ft 15ft 20ft 25ft 30ft 35ft 17 17 35.5 16 16 35.4 55.0 3000 80 % 15 15 °F...
  • Page 72 RT70 Operator’s Manual Controls - 71 Display, Trench Depth Meter Item Description IMPORTANT 3. Current depth gauge Displays current trench depth. 4. Average depth gauge Displays average trench depth from current job. 5. Distance gauge Displays distance trenched from start of job.
  • Page 73 RT70 Operator’s Manual Controls - 72 Display, Trench Depth Meter Item Description IMPORTANT 16. Depth graph line Displays trench depth changes. 17. Surface grade graph line Displays surface grade changes. 18. Distance trenched graph Displays reference for axis distance trenched.

  • Page 74: Soft Keys

    RT70 Operator’s Manual Controls - 73 Display, Trench Depth Meter Soft Keys Depth Meter 06:57 5 0ft 10ft 15ft 20ft 25ft 30ft 35ft 35.5 35.4 55.0 3000 80 % °F 1003 t63om101h21.eps t63om101h21.eps 1. Manual scroll backward 5. Exit depth meter screen 2.
  • Page 75 RT70 Operator’s Manual Controls - 74 Display, Trench Depth Meter Item Description IMPORTANT 6. Pause/Resume current To pause current job, press. job. To resume, press. 7. Start new job To start new job, press.

  • Page 76: Microtrencher

    RT70 Operator’s Manual Controls - 75 Microtrencher (MT12 only) Microtrencher (MT12 only) 1. Swing lock handle 3. Bubble level 2. Manual tilt adjustment 4. Level indicator Item Description IMPORTANT 1. Swing lock handle To lock, move handle toward In most situations, operate with tractor.
  • Page 77 RT70 Operator’s Manual Controls - 76 Microtrencher (MT12 only) Item Description IMPORTANT 3. Bubble level Displays left-to-right Use with manual tilt adjustment to microtrencher angle. adjust microtrencher to match jobsite conditions. See “Adjust Tilt” on page 107. 4. Level indicator...

  • Page 78: Plow

    RT70 Operator’s Manual Controls - 77 Plow Plow t63om016h21.eps t63om016h21.eps • Stow lock control Item Description IMPORTANT Stow lock control To lock: Use this control to lock plow in the raised position. 1. Raise plow fully. 2. Move control right.

  • Page 79: Seat

    RT70 Operator’s Manual Controls - 78 Seat Seat Standard t63om017h21.eps t63om017h21.eps 1. Seat belt 3. Slide control 2. Pivot control Item Description IMPORTANT 1. Seat belt To fasten, insert latch into buckle. Adjust until seat belt is low and tight.
  • Page 80 RT70 Operator’s Manual Controls - 79 Seat Item Description IMPORTANT 3. Slide control To slide seat forward or backward, pull, then adjust seat. To lock seat in place, release.

  • Page 81: Suspension

    RT70 Operator’s Manual Controls - 80 Seat Suspension t63om018h21.eps t63om018h21.eps 1. Seat belt 3. Suspension control 2. Pivot control 4. Slide control Item Description IMPORTANT 1. Seat belt To fasten, insert latch into buckle. Adjust until seat belt is low and tight.
  • Page 82 RT70 Operator’s Manual Controls - 81 Seat Item Description IMPORTANT 3. Suspension control Adjust dial to approximate body weight for additional comfort. 4. Slide control To slide seat forward or backward, pull, then adjust seat. To lock seat in place, release.
  • Page 83 RT70 Operator’s Manual Controls - 82 Seat...

  • Page 84: Drive

    RT70 Operator’s Manual Drive - 83 Drive Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Start ........84 Operate .

  • Page 85: Start

    RT70 Operator’s Manual Drive - 84 Start Start EMERGENCY SHUTDOWN: Turn ignition switch off. Misuse of machine can cause death or serious injury. Read and understand operator’s manual and all other safety instructions before use. Know how to use all controls.

  • Page 86: Operate

    RT70 Operator’s Manual Drive - 85 Operate Operate NOTICE: • Drive carefully in congested areas. Know machine’s clearance and turning radius. • Survey field of vision when operating machine. 1. Turn on optional lights as needed. 2. Raise backfill blade and all attachments.

  • Page 87: Slope Guidelines

    RT70 Operator’s Manual Drive - 86 Operate Slope Guidelines Tipover. Crushing can cause death or serious injury. Follow procedure in operator’s manual. Drive cautiously. To help avoid injury: • Operate at slow speed when on rough terrain. • Avoid driving across slopes.

  • Page 88: Reduce Track Wear

    RT70 Operator’s Manual Drive - 87 Shut Down Reduce Track Wear Rubber tracks are best suited at soil-based jobsites with minimal rocks and debris. To reduce track wear drive slowly and make wide turns. Avoid the following: • spinning tracks under heavy load •...
  • Page 89 RT70 Operator’s Manual Drive - 88 Shut Down...

  • Page 90: Transport

    RT70 Operator’s Manual Transport - 89 Transport Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Lift ........90 Haul .

  • Page 91: Lift

    RT70 Operator’s Manual Transport - 90 Lift Lift Lifted load. Crushing weight can cause death or serious injury. Stay away from lifted load and its range of movement. This machine is not configured for lifting. If the tractor must be lifted, load machine into a container or onto a platform appropriate for lifting.

  • Page 92: Load

    RT70 Operator’s Manual Transport - 91 Haul Load Horizontal movement. Crushing can cause death or serious injury. Read and understand operator’s manual and all safety instructions before use. 1. Fasten and adjust seat belt with seat facing forward. 2. Start engine.

  • Page 93: Tie Down

    RT70 Operator’s Manual Transport - 92 Haul Tie Down Points Tiedown points are identified by tiedown decals. Securing to truck or trailer at other points is unsafe and can damage machinery. Procedure Tractor Loop a transport chain around each tie down point.
  • Page 94 RT70 Operator’s Manual Transport - 93 Haul Traversing Trencher Lower attachment to trailer bed and chain at attachment frame and through boom. Ensure chains are tight before transporting. IMPORTANT: If trencher is equipped with a trench cleaner, ensure that trench cleaner shoe is fully raised and extra bolt (found in operator’s manual compartment) is installed in...

  • Page 95: Unload

    RT70 Operator’s Manual Transport - 94 Haul Unload Horizontal movement. Crushing can cause death or serious injury. Read and understand operator’s manual and all safety instructions before use. 1. Prepare trailer and ramps for unloading. 2. Remove tiedowns. 3. Fasten and adjust seat belt.

  • Page 96: Retrieve

    RT70 Operator’s Manual Transport - 95 Haul Retrieve Under normal conditions, tractor should not be towed. If unit becomes disabled and retrieval is needed: • Tow for no more than 200yd (180m) at less than 1mph (1.6km/h). • Use maximum towing force of 1.5 times machine weight.
  • Page 97 RT70 Operator’s Manual Transport - 96 Haul...

  • Page 98: Backhoe

    RT70 Operator’s Manual Backhoe - 97 Backhoe Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Set Up ........98 •...

  • Page 99: Set Up

    RT70 Operator’s Manual Backhoe - 98 Set Up Set Up Position Tractor 1. Fasten and adjust seat belt. 2. Start engine. 3. Drive to starting point. Move in line with planned job. NOTICE: Backhoe may obstruct the forward visibility of the operator. Machines with limited forward visibility should be driven only with the help of a spotter.

  • Page 100: Prepare Backhoe

    RT70 Operator’s Manual Backhoe - 99 Operate Prepare Backhoe 1. Rotate seat out of stowed position. 2. Release swing lock. 3. Release stow lock. t63om026h21.eps t63om026h21.eps Operate 1. Start engine. 2. Move to backhoe seat. 3. Lower backfill blade, if equipped.

  • Page 101: Move Machine

    RT70 Operator’s Manual Backhoe - 100 Move Machine Move Machine NOTICE: Only use this method to move machine less than 30’ (10m) at one time. 1. Raise stabilizers enough to clear ground. 2. Raise backfill blade, if equipped. 3. Move machine.

  • Page 102: Finish Job

    RT70 Operator’s Manual Backhoe - 101 Finish Job Finish Job IMPORTANT: For tractor to function once operator has returned to operator station, stabilizers must be raised, remote throttle must be disabled, remote stop must be disengaged, and boom must be stowed and locked.
  • Page 103 RT70 Operator’s Manual Backhoe - 102 Finish Job...

  • Page 104: Microtrench

    RT70 Operator’s Manual Microtrench - 103 Microtrench Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Set Up ....... . . 104 •...

  • Page 105: Set Up

    RT70 Operator’s Manual Microtrench - 104 Set Up Set Up 1. MT12: Before first use and after changing bits, check bit clearance. See “Check Bit Clearance” on page 105. 2. Fasten and adjust seat belt. 3. Start engine. 4. Raise microtrencher.

  • Page 106: Check Bit Clearance

    RT70 Operator’s Manual Microtrench - 105 Set Up Check Bit Clearance MT12 with blades using 10mm rotating conical bits only 1. Remove blade cover (3). 2. Ensure all bits (1) are properly secured with bit retaining pins are secure. 3. Ensure blade retaining nut (2) is tight.

  • Page 107: Adjust Trench Depth

    RT70 Operator’s Manual Microtrench - 106 Set Up Adjust Trench Depth Spoils Deflector MT12 only 1. Remove blade cover. 2. Remove hardware that retain the inside spoils deflector (shown). 3. Position spoils deflector. IMPORTANT: For best spoils removal, set the spoils deflector as close to the blade as possible.

  • Page 108: Adjust Tilt

    RT70 Operator’s Manual Microtrench - 107 Set Up Adjust Tilt IMPORTANT: Microtrenching requires good contact between microtrencher frame and the surface being cut. Lift, level and tilt microtrencher to match jobsite conditions. MT12 only 1. Lower microtrencher. 2. Loosen four clamp bolts (2, and two on other side of mount).

  • Page 109: Prepare Spoils Removal

    RT70 Operator’s Manual Microtrench - 108 Set Up Prepare Spoils Removal The MT12 is designed to operate optimally with an 800cfm vacuum excavator to remove spoils. If vacuum excavator is not available, set up machine to operate without it and use other dust control methods.

  • Page 110: Operate

    RT70 Operator’s Manual Microtrench - 109 Operate Operate Thrown objects. Impact can cause death or serious injury. Stay away. 1. Start machine. 2. Set to low throttle. 3. Lower backfill blade to ground. 4. Set speed. Moving digging teeth. Contact will cause death or serious injury.
  • Page 111 RT70 Operator’s Manual Microtrench - 110 Operate 7. Raise backfill blade. 8. Release parking brake. 9. Set trenching speed. NOTICE: • Do not attempt to trench a radius smaller than 40’ (12.2m). • Release microtrencher swing lock when cutting curved trenches.

  • Page 112: Use Trench Cleaner

    RT70 Operator’s Manual Microtrench - 111 Operate Use Trench Cleaner NOTICE: Do not start trench with trench cleaner in place. Use correct trench cleaner for blade. Two trench cleaners are available: one for blades 1” (25mm) or less and one for blades wider than 1” (25mm).

  • Page 113: Finish Job

    RT70 Operator’s Manual Microtrench - 112 Finish Job Finish Job 1. When trench is complete, stop machine movement. 2. Adjust to low throttle. 3. Raise blade. 4. When blade is fully raised, stop blade rotation. 5. Raise microtrencher. 6. Drive a short distance away from work site.

  • Page 114: Plow

    RT70 Operator’s Manual Plow - 113 Plow Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Set Up ....... . . 114 •...

  • Page 115: Set Up

    RT70 Operator’s Manual Plow - 114 Set Up Set Up Position Tractor IMPORTANT: If material must be at a constant depth, dig starting and target trenches. 1. Fasten and adjust seatbelt. 2. Start engine. 3. Drive to starting point. Move in line with planned plow path.

  • Page 116: Prepare Tractor

    RT70 Operator’s Manual Plow - 115 Set Up Feed Product IMPORTANT: Use only genuine Ditch Witch cable guide. 1. Remove cable guide. 2. Feed material through tube from top to bottom, as shown. 3. Replace cable guide and tighten fasteners.

  • Page 117: Operate

    RT70 Operator’s Manual Plow - 116 Operate Operate 1. If equipped with combo, enable plow operation. 2. Lower plow blade into ground. 3. Set plow lift to float. 4. Drive forward slowly. 5. Start plow vibration. PLOW WILL VIBRATE. NOTICE: •...

  • Page 118: Special Plowing

    RT70 Operator’s Manual Plow - 117 Operate Special Plowing NOTICE: Oversteering blade may damage blade or cable. Your Ditch Witch® equipment allows you to plow four ways: normal plowing, offset plowing (1), coordinated plowing (2), and crabbing (3). Offset Plowing Offset plowing can be used to plow next to a road while keeping tracks on a more stable surface or in similar conditions.

  • Page 119: Finish Job

    RT70 Operator’s Manual Plow - 118 Finish Job Finish Job 1. When installation is complete, move plow swing and plow lift out of float. 2. Stop machine movement. 3. With vibrator running, raise plow to ground level while reducing vibrator speed.

  • Page 120: Reel Carrier

    RT70 Operator’s Manual Reel Carrier - 119 Reel Carrier Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Set Up ....... . . 120 •...
  • Page 121 RT70 Operator’s Manual Reel Carrier - 120 Set Up Set Up Install Reel 1. Start engine. 2. Lower reel carrier. 3. Shut off machine. 4. Install reel. Prepare to Plow 1. Fasten and adjust seat belt. 2. Start engine. 3. Drive to beginning of planned plow path.
  • Page 122 RT70 Operator’s Manual Reel Carrier - 121 Finish Job Finish Job 1. When finished winding, raise reel winder arm. 2. Set to low throttle. 3. Enable backfill blade controls. 4. Raise backfill blade, if equipped. 5. Release parking brake. 6. Follow directions in “Plow” on page 101 to begin plowing.
  • Page 123 RT70 Operator’s Manual Reel Carrier - 122 Finish Job...
  • Page 124 RT70 Operator’s Manual Trench - 123 Trench Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Set Up ....... . . 124 Operate .
  • Page 125 RT70 Operator’s Manual Trench - 124 Set Up Set Up IMPORTANT: • When cutting asphalt, start trench in soil at edge of road and use shortest possible boom at full depth. • Sight along center of hood to a stake driven beyond end of trench line for straight trench.
  • Page 126 RT70 Operator’s Manual Trench - 125 Operate Operate Thrown objects. Impact can cause death or serious injury. Stay away. To help avoid injury: • Keep everyone at least 6’ (1.8m) from machine, attachments, and their range of movement. • Know soil conditions and adjust digging speed accordingly.
  • Page 127 RT70 Operator’s Manual Trench - 126 Operate 7. If using optional trench cleaner: NOTICE: • Do not have trench cleaner in working position when starting a trench. • Do not back up with trench cleaner in working position. Hydraulic •...
  • Page 128 RT70 Operator’s Manual Trench - 127 Finish Job Finish Job 1. When trench is complete, stop forward movement. 2. Set to low throttle. 3. Raise boom. 4. As boom clears top of trench, stop chain movement. 5. If equipped with traversing trencher, return trencher to center position.
  • Page 129 RT70 Operator’s Manual Trench - 128 Finish Job...
  • Page 130 RT70 Operator’s Manual Systems and Equipment - 129 Systems and Equipment Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. Chain, Teeth, and Sprockets ....130 •...

  • Page 131: Chain, Teeth, And Sprockets

    RT70 Operator’s Manual Systems and Equipment - 130 Chain, Teeth, and Sprockets Chain, Teeth, and Sprockets Chain and Tooth Maintenance • Always replace sprockets at the same time as the digging chain. Sprockets and chain are designed to work together. Replacing one without the other will cause premature wear of the new part.

  • Page 132: Chain Selection

    RT70 Operator’s Manual Systems and Equipment - 131 Chain, Teeth, and Sprockets Chain Selection These charts are meant as a guideline only. No one chain type works well in all conditions. Contact your Ditch Witch® dealer for soil conditions and chain recommendations for your area. Ask for the latest Chain, Teeth, and Sprockets Parts Catalog.

  • Page 133: Cruise Control

    RT70 Operator’s Manual Systems and Equipment - 132 Cruise Control Cruise Control EMERGENCY SHUTDOWN: Turn ignition switch off. IMPORTANT: See “Controls” on page 27. Cruise control is a standard feature that allows machine to automatically adjust ground drive speed according to digging conditions. In easier soil conditions, ground drive speed will increase. When machine encounters difficult soil conditions, ground drive speed will decrease.
  • Page 134 12. Allow chain to dig itself free before stopping attachment. Anti-Stall Technology RT70 tractors equipped with trenchers include Anti-Stall Technology (AST) as part of cruise control. AST will detect impending stall conditions, and will attempt to prevent engine from stalling during trenching.
  • Page 135 RT70 Operator’s Manual Systems and Equipment - 134 Cruise Control 11. If AST icon turns yellow, trencher and ground drive will stop while system waits for operator response. System will wait up to ten seconds for operator response before aborting process.

  • Page 136: Optional Equipment

    RT70 Operator’s Manual Systems and Equipment - 135 Optional Equipment Optional Equipment Contact your Ditch Witch® dealer for more information about the following optional equipment. Tractor Equipment Description Anti-stall technology Automated stall reduction. Backfill blade Allows jobsite restoration; backfill blade tilt kit also available.

  • Page 137: Microtrencher

    RT70 Operator’s Manual Systems and Equipment - 136 Optional Equipment Microtrencher Equipment Description Bits and bit holders Replace as needed to increase efficiency and keep from damaging machine. Blades Provides options for cutting trenches 0.75” (19mm), 0.95” (24mm), or 1.25” (32mm) wide.

  • Page 138: Plow

    RT70 Operator’s Manual Systems and Equipment - 137 Optional Equipment Plow Equipment Description Blades Several blade options are available Cable guide Designed to fit Ditch Witch machines and speed cable installation Reel carrier Designed to fit Ditch Witch equipment and speed cable installation...

  • Page 139: Counterweights

    RT70 Operator’s Manual Systems and Equipment - 138 Counterweights Counterweights General counterweighting values are shown below. For specific counterweighting requirements, contact your Ditch Witch dealer. Multiple attachment configurations may require additional tire options. See “Tire Fill” on page 139.. CT70/ST70...
  • Page 140 RT70 Operator’s Manual Systems and Equipment - 139 Counterweights VP70 Front Attachment Weight Rack BH70 RC20 • □ □ Front weight • Rear □ □ weight • □ □ Front weight Rear weight • Counterweights required Counterweights recommended for performance □...
  • Page 141 RT70 Operator’s Manual Systems and Equipment - 140 Counterweights...
  • Page 142 RT70 Operator’s Manual Complete the Job - 141 Complete the Job Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. Restore Jobsite ......142 Rinse Equipment .
  • Page 143 RT70 Operator’s Manual Complete the Job - 142 Restore Jobsite Restore Jobsite After product is installed, return spoils to the trench with optional backfill blade. 1. Position machine at end of trench, several feet from spoils. Aim tractor at outer edge of spoils.
  • Page 144 RT70 Operator’s Manual Maintenance - 143 Maintenance Chapter Contents For additional precautions, see “Safety” and “Prepare” chapters. IMPORTANT: For more information on how to operate controls, see “Controls” chapter. Maintenance Precautions ....145 •...
  • Page 145 RT70 Operator’s Manual Maintenance - 144 Trencher Maintenance Interval Chart ..183 Trencher Procedures ..... . 184...

  • Page 146: Maintenance Precautions

    RT70 Operator’s Manual Maintenance - 145 Maintenance Precautions Maintenance Precautions Jobsite hazards. Exposure can cause death or serious injury. Use correct equipment and work methods. Use and maintain appropriate safety equipment. To help avoid injury: • Wear personal protective equipment including hard hat, safety eye wear, foot protection, hearing protection, and gloves (except when near rotating equipment).

  • Page 147: Welding Precaution

    Switching Between Tracks and Tires The RT70 machine can be equipped with tires or tracks. Contact your Ditch Witch dealer to switch between tracks and tires. Your dealer will adjust steering stop settings to match whether the machine is...

  • Page 148: Recommended Lubricants

    RT70 Operator’s Manual Maintenance - 147 Recommended Lubricants Recommended Lubricants Item Description DEAC Diesel engine antifreeze/coolant, low silicate, fully-formulated meeting ASTM D6210 See “Approved Coolant” on page 148. Diesel engine oil meeting or exceeding API service classification CJ-4, ACEA E6, or JASO DH-2.

  • Page 149: Engine Oil Temperature Chart

    RT70 Operator’s Manual Maintenance - 148 Recommended Lubricants Engine Oil Temperature Chart °F SAE 10W SAE 20W SAE 5W-30 SAE 10W-30 SAE 15W-40 SAE 20 SAE 30 SAE 40 °C t63om095h21.eps t63om095h21.eps Temperature range anticipated before next oil change Approved Coolant NOTICE: •...

  • Page 150: Approved Fuel

    RT70 Operator’s Manual Maintenance - 149 Recommended Lubricants Approved Fuel Ultra Low Sulfur Diesel (ULSD) poses a greater static ignition hazard than earlier diesel formulations with higher sulfur content. Avoid death or serious injury from fire or explosion; consult with your fuel or fuel system supplier to ensure the delivery system is in compliance with fueling standards for proper grounding and bonding practices.

  • Page 151: Tractor Service Interval Chart

    RT70 Operator’s Manual Maintenance - 150 Tractor Maintenance Interval Chart Tractor Maintenance Interval Chart IMPORTANT: Chart indicates first instance of repeated service procedures. See detailed information below. Adjust, service, or test Change, initial Lube, initial Check Change Lube Service Axle spindle pins...

  • Page 152: Tractor Procedures

    RT70 Operator’s Manual Maintenance - 151 Tractor Procedures Service Parking brake Radiator Seat belt Tires Track hub bolts Track pivot bearings Track rollers and sprocket Track tension Universal joints Water separator Tractor Procedures Axle Spindle Pins Lube at zerk (shown) with EPG every 250 hours.
  • Page 153 RT70 Operator’s Manual Maintenance - 152 Tractor Procedures Battery Corrosive fluid. Contact can cause death or serious injury. Avoid contact. Wear appropriate gloves. See Safety Data Sheet (SDS) for more information. To help avoid injury: • Never attempt to charge a battery that is leaking, bulging, heavily corroded, frozen, or otherwise damaged.
  • Page 154 RT70 Operator’s Manual Maintenance - 153 Tractor Procedures Check 1. Turn battery disconnect switch, if equipped, off. 2. Ensure no ignition sources are near battery. 3. Loosen and remove battery cable clamps carefully, negative (-) cable first. 4. Clean cable clamps and terminals to remove dull glaze.
  • Page 155 RT70 Operator’s Manual Maintenance - 154 Tractor Procedures Charge 1. Park service vehicle close to disabled machine but do not allow vehicles to touch. 2. Set parking brake in both, if equipped. 3. Turn ignition switch off in both vehicles and turn off all electrical loads.
  • Page 156 RT70 Operator’s Manual Maintenance - 155 Tractor Procedures Belt, Engine Drive Check every 50 hours. Change every 2000 hours. Check Check belt for cracks and wear. If damaged, change belt. Change 1. Rotate fan idler (Shown) to relieve belt tension.
  • Page 157 RT70 Operator’s Manual Maintenance - 156 Tractor Procedures Coolant Check every 10 hours. Test freeze protection level every 500 hours. Adjust as needed. Change every 2000 hours. Check Level 1. Check level at fill (1). 2. Add DEAC at fill as needed to keep level at bottom of fill neck.
  • Page 158 RT70 Operator’s Manual Maintenance - 157 Tractor Procedures Dust Ejector Valve Check valve (shown) every 10 hours. Ensure valve is not inverted, damaged, plugged, or cracked. t63om031h21.eps t63om031h21.eps Engine Compartment NOTICE: • Check more often if operating in large brush, grassy conditions, or if machine is being stored.
  • Page 159 RT70 Operator’s Manual Maintenance - 158 Tractor Procedures Filter, Air NOTICE: • Only open the air filter canister when air filter service indicator shows that service is needed. • Change the elements. Do not attempt to clean them. • Improperly installed primary element can lead to premature engine failure.
  • Page 160 RT70 Operator’s Manual Maintenance - 159 Tractor Procedures Filter, Fuel Check filters (1,2) every 10 hours. Change every 500 hours. t63om034h21.eps t63om034h21.eps...
  • Page 161 RT70 Operator’s Manual Maintenance - 160 Tractor Procedures Fluid, Hydraulic NOTICE: Change every 500 hours if jobsite temperature 100°F (38°C) more than 50% of the time, of if jobsite is extremely dusty. Fluid Check every 10 hours. Initial hydraulic fluid change at 500 hours.
  • Page 162 RT70 Operator’s Manual Maintenance - 161 Tractor Procedures Hydraulic Hoses Pressurized fluid or air. Injection can cause death or serious injury. Refer to operator’s manual for correct use. To help avoid injury: • Use a piece of cardboard or wood, rather than hands, to check for leaks.
  • Page 163 RT70 Operator’s Manual Maintenance - 162 Tractor Procedures Oil, Differential Check every 250 hours. Change every 1000 hours. Check 1. Check level at fill (1). 2. Add MPL at fill as needed to keep level visible. Change 1. Remove plugs (2) to drain.
  • Page 164 RT70 Operator’s Manual Maintenance - 163 Tractor Procedures Oil, Ground Drive Gearbox Check every 250 hours. Change every 1000 hours. Check 1. Check level at fill (1). 2. Add MPL at fill as needed to keep level at raised horizontal line on gearbox.
  • Page 165 RT70 Operator’s Manual Maintenance - 164 Tractor Procedures Parking Brake, Mechanical Release Release 1. Remove four brake release bolts (shown) on rear axle. 2. Remove spacers from bolts, set spacers aside. 3. Reinstall four bolts until finger tight. 4. Tighten bolts on left side.
  • Page 166 RT70 Operator’s Manual Maintenance - 165 Tractor Procedures Radiator NOTICE: Radiator may need to be cleaned more frequently in dusty or grassy conditions. Check every 10 hours. Clean as needed. Check Check radiator (shown) for dirt, grass, and other debris.
  • Page 167 RT70 Operator’s Manual Maintenance - 166 Tractor Procedures Seat Belt Check every 2000 hours. Replace any worn or damaged components. Buckle and Latch Check that buckle and latch (1) are not broken or corroded. When inserting the latch into the buckle, the latch should insert smoothly until an audible click is heard.
  • Page 168 RT70 Operator’s Manual Maintenance - 167 Tractor Procedures Track Hub Bolts Check every 100 hours. Tighten to 295ft•lb (400N•m) as needed. t63om043h21.eps t63om043h21.eps Track Pivot Bearings Lube at zerk (shown) with MPG every 50 hours. t63om044h21.eps t63om044h21.eps Track Rollers and Sprocket Check rollers and sprocket (shown) every 100 hours.
  • Page 169 RT70 Operator’s Manual Maintenance - 168 Tractor Procedures Track Tension Check every 100 hours. Adjust as needed. Check If red shows in window (3), adjust track belt. Adjust 1. Loosen jamb nut on each side of roller (1). 2. Turn adjustment nut (2) until no red is visible in adjustment window.

  • Page 170: Backhoe Maintenance Interval Chart

    RT70 Operator’s Manual Maintenance - 169 Backhoe Service Interval Chart* Backhoe Service Interval Chart* Adjust, service, or test Change, initial Lube, initial Check Change Lube Service Pins and bushings *The chart above indicates the first instance of repeated service procedures. See detailed information below.

  • Page 171: Microtrencher Maintenance Interval Chart

    RT70 Operator’s Manual Maintenance - 170 Microtrencher Maintenance Interval Chart* Microtrencher Maintenance Interval Chart* Adjust, service, or test Change, initial Lube, initial Check Change Lube Service Attachment mounting bolts Blade and bits Deflectors Level cylinder Slide plate Tilt adjustment Traverse frame Vacuum hose *The chart above indicates the first instance of repeated service procedures.
  • Page 172 RT70 Operator’s Manual Maintenance - 171 Microtrencher Procedures Blade and Bits MT12 Check bits for wear every 100ft (30.5m). Replace worn bits as needed. Check wear bars and hard-surface material on blades every 100ft (30.5m). Replace wear bars and hard- surface material as needed to protect bit holders.
  • Page 173 RT70 Operator’s Manual Maintenance - 172 Microtrencher Procedures Wear Bars/Hard-Surface Material Check thickness of wear bars and hard-surface material with gauge (shown, 301-1507). Replace material as needed. Change Blade 1. Start engine. 2. Position microtrencher slightly above ground. 3. Shut off ma hine.
  • Page 174 RT70 Operator’s Manual Maintenance - 173 Microtrencher Procedures MT16 Check bits (shown) for wear every 100ft (30.5m). Change blade when bits are worn. Fixed Bits 1. Remove blade cover. 2. Inspect all bits for wear. 3. Replace blade when bits are worn.
  • Page 175 RT70 Operator’s Manual Maintenance - 174 Microtrencher Procedures Level Cylinder Bleed air from level cylinder when hydraulic hoses have been disconnected and when saw bounces excessively. 1. Remove blade. 2. Start engine. 3. Fully retract level cylinder (1) until it is vertical.
  • Page 176 RT70 Operator’s Manual Maintenance - 175 Microtrencher Procedures Tilt Adjustment MT12 Lube zerks (shown) with MPG every 100 hours. Vacuum Hoses Check hoses (shown) every 10 hours. Clean out caked spoils as needed.

  • Page 177: Plow Maintenance Interval Chart

    RT70 Operator’s Manual Maintenance - 176 Plow Maintenance Interval Chart* Plow Maintenance Interval Chart* Adjust, service, or test Change, initial Lube, initial Check Change Lube Service Arm pins and bushings Attachment mounting bolts Connector pivots Feed tube Lift cylinder Oil, vibrator...

  • Page 178: Plow Procedures

    RT70 Operator’s Manual Maintenance - 177 Plow Procedures Plow Procedures Arm Pins and Bushings Check pins and bushings (shown) every 10 hours. Tighten as needed. t63om051h21.eps t63om051h21.eps Attachment Mounting Bolts Check bolts (shown) every 10 hours. 1. Check for looseness or wear.
  • Page 179 RT70 Operator’s Manual Maintenance - 178 Plow Procedures Connector Pivots Check every 10 hours. Test upper and lower arm joints every 100 hours. Check Check pivots (shown) for wear or damage. t63om053h21.eps t63om053h21.eps Test Upper Arm Joints: 1. Lower plow to ground.
  • Page 180 RT70 Operator’s Manual Maintenance - 179 Plow Procedures Feed Tube Clean feed tube (shown) as needed. t63om055h21.eps t63om055h21.eps Lift Cylinder Check pins and bumpers (shown) for wear every 50 hours. Replace as needed. t63om056h21.eps t63om056h21.eps...
  • Page 181 RT70 Operator’s Manual Maintenance - 180 Plow Procedures Oil, Vibrator Hot parts. Contact can cause burns. Only touch when cool or wear gloves. NOTICE: Change every 250 hours if jobsite temperature 100°F (38°C) more than 50% of the time. Check oil on each side of vibrator every 10 hours. Change after 50 hours and every 500 hours thereafter.
  • Page 182 RT70 Operator’s Manual Maintenance - 181 Plow Procedures Pivots Lube pivots (shown) with EPG every 10 hours. t63om059h21.eps t63om059h21.eps Plow Blade Bolts Check bolts (shown) as needed. 1. Check for looseness. 2. Apply Loctite 242 (blue). 3. Tighten bolts to 210ft•lb (285N•m).
  • Page 183 RT70 Operator’s Manual Maintenance - 182 Plow Procedures Shear Mounts IMPORTANT: When replacing shear mounts, compress the mounts with washers to prevent the mount from tearing. Check mounts (shown) every 100 hours. Replace as needed. t63om061h21.eps t63om061h21.eps Sod Cutter and Blade Change sod cutter and blade (shown) as needed.
  • Page 184 RT70 Operator’s Manual Maintenance - 183 Trencher Maintenance Interval Chart* Trencher Maintenance Interval Chart* Adjust, service, or test Change, initial Lube, initial Check Change Lube Service Attachment mounting bolts Auger bearings Auger bolts Auger shaft Boom mounting bolts Digging chain...
  • Page 185 RT70 Operator’s Manual Maintenance - 184 Trencher Procedures Trencher Procedures Attachment Mounting Bolts Check bolts (shown) every 10 hours. 1. Check for looseness or wear. 2. Apply Loctite 271. 3. Tighten inner bolts (2) to 230ft•lb (312N•m). 4. Tighten outer bolts (1) to 449ft•lb (608N•m).
  • Page 186 RT70 Operator’s Manual Maintenance - 185 Trencher Procedures Auger Shaft Lube two auger shaft zerks (one on each side, shown) with EPG every 10 hours. t63om066h21.eps t63om066h21.eps Boom Mounting Bolts Check 5 bolts (shown) every 10 hours. 1. Check for looseness or wear.
  • Page 187 RT70 Operator’s Manual Maintenance - 186 Trencher Procedures Digging Chain Contents under pressure. Impact can cause death or serious injury. Relieve pressure before opening. To help avoid injury: • Service digging boom grease cylinder only while standing on opposite side of boom.
  • Page 188 RT70 Operator’s Manual Maintenance - 187 Trencher Procedures Change NOTICE: Replace sprockets when a new chain is installed. Remove Chain 1. Fasten and adjust seat belt. 2. Start engine. 3. Turn digging chain until connector pin is on top of boom.
  • Page 189 RT70 Operator’s Manual Maintenance - 188 Trencher Procedures 9. Loosen plug on grease cylinder or turn tension bolts (shown) counterclockwise to relieve chain tension. 10. Stand clear of chain and remove lock key from connector pin. 11. Drive connector pin out of link.
  • Page 190 RT70 Operator’s Manual Maintenance - 189 Trencher Procedures Install Chain 1. Lay chain on ground with teeth down and pointed toward unit. 2. Fasten and adjust seat belt. 3. Start engine. 4. Release parking brake. 5. Back unit up until chain extends past headshaft about 1’ (305mm).
  • Page 191 RT70 Operator’s Manual Maintenance - 190 Trencher Procedures Digging Chain Tension Contents under pressure. Impact can cause death or serious injury. Relieve pressure before opening. To help avoid injury: • Service digging boom grease cylinder only while standing on opposite side of boom.
  • Page 192 RT70 Operator’s Manual Maintenance - 191 Trencher Procedures Headshaft Motor Shaft Check headshaft motor shaft (shown) every 10 hours. 1. Check headshaft for wire or string wrapped around shaft at seal. 2. Carefully removed wrapped material. 3. Check for oil leaking from shaft seal.
  • Page 193 RT70 Operator’s Manual Maintenance - 192 Trencher Procedures Pivot Wipe four zerks (shown) located on right side of trencher pivot clean and lube with EPG every 10 hours. t63om071h21.eps t63om071h21.eps Wipe four zerks (shown) located on left side of trencher pivot clean and lube with EPG every 10 hours.
  • Page 194 RT70 Operator’s Manual Maintenance - 193 Trencher Procedures Tail Roller Remove plug (shown) to access zerk. Clean and lube with EPG every 10 hours. t63om073h21.eps t63om073h21.eps...
  • Page 195 RT70 Operator’s Manual Maintenance - 194 Trencher Procedures Trench Cleaner Position Check trench cleaner position (if equipped) every 10 hours or anytime the digging chain is adjusted or replaced. Ensure there is 3-4in (76-102mm) between the digging teeth and the inside of the trench cleaner shoe (A).
  • Page 196 Chapter Contents RT70 Tractor ......196 BH70 Backhoe ......205 CT70 Trencher .

  • Page 197: Rt70 Tractor

    RT70 Operator’s Manual Specifications - 196 RT70 Tractor RT70 Tractor t63om074h21.eps t63om074h21.eps t63om075h21.eps t63om075h21.eps...
  • Page 198 RT70 Operator’s Manual Specifications - 197 RT70 Tractor Dimensions Metric Angle of approach, tracks 32° 32° Angle of approach, 19.0/45 tires 20.8° 20.8° Angle of approach, solid tires 19.3° 19.3° Height, tracks 104.4in 2.65m Height, 19.0/45 tires 100.6in 2.56m Height, solid tires 100.4in...
  • Page 199 RT70 Operator’s Manual Specifications - 198 RT70 Tractor Operation U.S. Metric Forward speeds tracks Low/low 0.79mph 1.27km/h Low/medium 1.07mph 1.72km/h Low/high 1.72mph 2.77km/h High/low 2.29mph 3.69km/h High/medium 3.02mph 4.86km/h High/high 4.22mph 6.79km/h 19.0/45 tires Low/low 1.21mph 1.95km/h Low/medium 1.47mph 2.37km/h Low/high 2.27mph...
  • Page 200 RT70 Operator’s Manual Specifications - 199 RT70 Tractor Operation U.S. Metric Reverse speeds tracks Low/low .77mph 1.24km/h Low/medium 1.06mph 1.71km/h Low/high 1.74mph 2.8km/h High/low 2.29mph 3.69km/h High/medium 3.02mph 4.86km/h High/high 4.22mph 6.79km/h 19.0/45 tires Low/low 1.23mph 1.98km/h Low/medium 1.49mph 2.4km/h Low/high 2.28mph...
  • Page 201 RT70 Operator’s Manual Specifications - 200 RT70 Tractor Operation U.S. Metric Vehicle clearance circle (SAE) wall to wall with optional backfill blade tracks 34.99ft 10.66m 19.0/45 tires 31.58ft 9.63m solid tires 31.28ft 9.53m Vehicle clearance circle (SAE) wall to wall with optional backfill blade, front and rear steer tracks 24.68ft...
  • Page 202 RT70 Operator’s Manual Specifications - 201 RT70 Tractor Operation U.S. Metric Basic unit weight tracks (no bfb) 9590lb 4350kg 19.0/45 tires (no bfb) 6000lb 2722kg solid tires (no bfb) 6489lb 2943kg Max allowable tractor weight 17,000 7711kg Front counterweight rack (Rack + 15x96 lbs cast weights)
  • Page 203 RT70 Operator’s Manual Specifications - 202 RT70 Tractor Engine U.S. Metric Yanmar 4TNV98CT 600lb 272kg Fuel Diesel Cooling medium Liquid Injection Direct Aspiration Turbocharged Number of cylinders Displacement 202.53in³ 3.319L Bore 3.85in 98mm Stroke 4.33in 110mm Engine manufacturer’s gross power rating per SAE J1995 72.01hp...
  • Page 204 RT70 Operator’s Manual Specifications - 203 RT70 Tractor Hydraulic System U.S. Metric Ground drive pump capacity at 2500rpm 29gpm 110 L/min Ground drive pump relief pressure at 2500 rpm 4350-4800psi 300-330bar Attachment pump capacity at 2500rpm 29gpm 110L/min Attachment pump forward relief pressure at 2500rpm...
  • Page 205 RT70 Operator’s Manual Specifications - 204 RT70 Tractor Battery, 2 used Group 78U, SAE res. cap 115min., SAE cold crank @ 0°F (-18°C), 800amp, dual battery option Auxiliary power outlet - 12volt, 10amp Vibration Levels Plowing Trenching Average vibration transmitted to the operator’s hand during 13.1m/sec²...

  • Page 206: Bh70 Backhoe

    RT70 Operator’s Manual Specifications - 205 BH70 Backhoe BH70 Backhoe t63om076h21.eps t63om076h21.eps Dimensions Metric Transport height, tracks 114.6in 2911mm Transport height, 19.0/45 tires 110.8in 2814mm Stabilizer spread, transport 61in 1549mm Ground clearance, tracks 38.4in 975mm Ground clearance 34.6in 879mm Backhoe length, stowed 101.2in...
  • Page 207 RT70 Operator’s Manual Specifications - 206 BH70 Backhoe Dimensions Metric Operating height, fully raised, tracks 149.6in 3800mm Operating height, fully raised, 19.0/45 tires 145.8in 3703mm Loading height, tracks 99.8in 2535mm Loading height, 19.0/45 tires 96in 2438mm Loading reach 66.5in 1689mm...
  • Page 208 RT70 Operator’s Manual Specifications - 207 BH70 Backhoe General U.S. Metric Max tool force Using bucket cylinder 4200lb 18.68kN Using arm cylinder 4000lb 17.79kN *Vertical forces are for a stationary machine supported by stabilizers.

  • Page 209: Ct70 Trencher

    RT70 Operator’s Manual Specifications - 208 CT70 Trencher CT70 Trencher L2 L2 C1 C1 E1 E1 E2 E2 t63om096h21.eps t63om096h21.eps Dimensions Metric Angle of departure, tracks 31.8° 31.8° Angle of departure, 19.0/45 tires 20.8° 20.8° Trench depth, max, tracks 57.5in 1461mm Trench depth, max, 19.0/45 tires...
  • Page 210 RT70 Operator’s Manual Specifications - 209 CT70 Trencher Dimensions Metric Headshaft height, digging chain, tracks 33in 838mm Headshaft height, digging chain, 19.0/45 tires 29.2in 742mm Transport height, tracks 108.4in 2753mm Transport height, 19.0/45 tires 104.5in 2654mm Transport length 107in 2718mm Headshaft overhang 35.6in...

  • Page 211: St70 Trencher

    RT70 Operator’s Manual Specifications - 210 ST70 Trencher ST70 Trencher L2 L2 C1 C1 E1 E1 E2 E2 t63om077h21.eps t63om077h21.eps Dimensions Metric Trench depth, max, tracks 59.9in 1521mm Trench depth, max, 19.0/45 tires 63.8in 1621mm Angle of departure, tracks 24.4°...
  • Page 212 RT70 Operator’s Manual Specifications - 211 ST70 Trencher Dimensions Metric Headshaft height, digging chain, tracks 30.8in 782mm Headshaft height, digging chain, 19.0/45 tires 27in 686mm Transport height, tracks 106.1in 2692mm Transport height, 19.0/45 tires 104in 2642mm Headshaft overhang 46.4in 1179mm Transport length 115.4in...

  • Page 213: Vp70 Plow

    RT70 Operator’s Manual Specifications - 212 VP70 Plow VP70 Plow L2 L2 L2’ L2’ A3’ A3’ A’ A’ t63om078h21.eps t63om078h21.eps Dimensions Metric Cover depth* 36in 914mm A’ Penetration* 40in 1020mm Angle of departure, transport, 24in (610mm) blade, tracks 25.5° 25.5°...
  • Page 214 RT70 Operator’s Manual Specifications - 213 VP70 Plow Dimensions Metric Height, transport, tracks 101.7in 2583mm Height, transport, 19.0/45 tires 97.8in 2484mm Blade ground clearance, 30in (760mm) blade, tracks 36.8in 935mm Blade ground clearance, 30in (760mm) blade, 19.0/45 32.9in 836mm tires Attachment length, fully lowered, no blade 94.1in...

  • Page 215: Mt12 Microtrencher

    RT70 Operator’s Manual Specifications - 214 MT12 Microtrencher MT12 Microtrencher Dimensions Metric Angle of departure 17° 17° Trench depth 6.5-12.5in 165-318mm Blade diameter 34in 864mm Attachment height, transport 63.3in 1608mm Ground clearance at wheel 24.4in 620mm Length, transport, from centerline of real axle 76.4in...
  • Page 216 RT70 Operator’s Manual Specifications - 215 MT12 Microtrencher Dimensions Metric Centerline of machine to end of traverse frame 28.3in 718mm Width, transport 71.1in 1806mm Length, working, from centerline of rear axle 84in 2.1m Attachment weight, including mount kit 1592lb 722kg Microtrenching radius, min, offset to right* 28.8ft...

  • Page 217: Mt16 Microtrencher

    RT70 Operator’s Manual Specifications - 216 MT16 Microtrencher MT16 Microtrencher a52om001w.eps Dimensions Metric Angle of departure 20° 20° Trench depth, 1in (25.4mm) increments 0-16in 0-406mm Blade diameter 43in 1092mm Attachment height, transport 81.4in 2068mm Ground clearance at wheel 11.8in 300mm Length, transport, from centerline of real axle 94.2in...
  • Page 218 RT70 Operator’s Manual Specifications - 217 MT16 Microtrencher Dimensions Metric Centerline of machine to end of traverse frame 27.7in 704mm Width, transport 71.1in 1806mm Length, working, from centerline of rear axle 111in 2.8m Attachment weight, including mount kit 2227lb 1010kg Microtrenching radius, min, offset to right* 24.5ft...

  • Page 219: Rc20 Reel Carrier

    RT70 Operator’s Manual Specifications - 218 RC20 Reel Carrier RC20 Reel Carrier L5 L5 t63om079h21.eps t63om079h21.eps Dimensions Metric Distance from backfill blade to outside edge of reel carrier 72.5in 1842mm with max diameter reel Reel diameter, max 84in 2134mm Attachment weight...

  • Page 220: Eu Declaration Of Conformity

    RT70 Operator’s Manual Specifications - 219 EU Declaration of Conformity EU Declaration of Conformity Countries in the European Union should have received a Declaration of Conformity (DOC) with this machine similar to the example below. The Charles Machine Works, Inc.
  • Page 221 RT70 Operator’s Manual Specifications - 220 EU Declaration of Conformity...
  • Page 222 RT70 Operator’s Manual Support - 221 Registration Support Registration If your equipment was purchased through a Ditch Witch dealer, it is already registered. If you purchased from any other source, please email productsupportwarrantyadmin@ditchwitch.com or fill out the registration card located in the back of the parts manual. Registration enables you to receive updates on this equipment as well as information on new products of interest.
  • Page 223 RT70 Operator’s Manual Warranty - 222 Resources Warranty Ditch Witch Equipment and Replacement Parts Limited Warranty Policy Subject to the limitation and exclusions herein, free replacement parts will be provided at any authorized Ditch Witch dealership for any Ditch Witch equipment or parts manufactured by the Ditch Witch factory that fail due to a defect in material or workmanship within one (1) year of first commercial use.

Table of Contents