Ditch Witch SK850 User Manual

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SK850

053-2790

Operator’s Manual

CMW

Issue 1.0

Original Instruction

SK850 Operator’s Manual Overview - 1

Overview

Chapter Contents

Serial Number Location . . . . . . . . . . . . . . . . . . . . . . 2

Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Equipment Modification . . . . . . . . . . . . . . . . . . . . . . 3

Unit Components . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Operator Orientation. . . . . . . . . . . . . . . . . . . . . . . . . 5

About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . 6

• Bulleted Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

• Numbered Lists. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

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Overview - 2 SK850 Operator’s Manual

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Serial Number Location

Record serial numbers and date of purchase in spaces provided. Unit serial number is located as shown.

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Item

date of manufacture date of purchase unit serial number engine serial number

SK850 Operator’s Manual Overview - 3

Intended Use

The SK850 is a platform, rubber track min i skid steer unit designed for light-to medium-duty constr uction work. The SK850 has a quick attach mount plate which makes it easy for an operator to connect different attachments. The SK850 can be used as a dedicated footings trencher using the TR50 trenching attachment. The unit is designed for operation in temperatures typically experienced in earth moving and construction work environments. Provisions may be required to operate in extreme temperatures. Contact

your Ditch Witch

The SK850 should be operated, serviced, and repaired only by persons familiar with its particular characteristics and acquainted with the relevant safety procedures.

dealer. Use in any other way is considered contrary to the intended use.

Equipment Modification

This equipment was designed and built in accordance with applicable standards and regulations. Modification of equipment could mean that it will no longer meet regulations and may not function properly or in accordance with the operating instructions. Modification of equipment should only be made by competent personnel possessing knowledge of applicable standards, regulations, equipment design functionality/requirements and any required specialized testing.

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Overview - 4 SK850 Operator’s Manual

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Unit Components

1. Operator station

2. Tracks

3. Engine compartment

4. Lift arms

5. Mount plate

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SK850 Operator’s Manual Overview - 5

Operator Orientation

1. Front of unit

2. Right side of unit

3. Rear of unit

4. Left side of unit

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Overview - 6 SK850 Operator’s Manual

About This Manual

This manual contains information for the proper use of this machine. See the beige Operation Overview pages for basic operating procedures. 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.

Numbered Lists

Numbered lists contain illustration callouts or list steps that must be performed in order.

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SK850 Operator’s Manual Foreword - 7

Foreword

This manual is an important part of your equipment. It provides safety information and operation

instructions to help you use and maintain your Ditch Witch Read this manual before using your equipment. Keep it with the equipmen t at all times for future reference.

If you sell your equipment, be sure to give this manual to the new owner. If you need a replacement copy, contact your Ditch Witch dealer. If you need assistance in locating a

dealer, visit our website at www.ditchwitch.com or write to the following address:

The Charles Machine Works, Inc. Attn: Marketing Department PO Box 66 Perry, OK 73077-0066 USA

The descriptions and specifications in this manual are subject to change without notice. The Charles Machine Works, Inc. reserves the right to improve equipment. Some product improvements may have taken place after this manual was publishe d. For the latest information on Ditch Witch equipment, see your Ditch Witch dealer.

equipment.

Thank you for buying and using Ditch Witch equipment.

CMW

Foreword - 8 SK850 Operator’s Manual

SK850

Operator’s Manual

Machine Works, Inc.

Issue number 1.0 / OM-10/14

Part number 053-2790

by The Charles Machine Works, Inc.

, Ditch Witch, CMW, and Roto Witch are registered trademarks of The Charles

CMW

SK850 Operator’s Manual Contents - 9

Content s

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 of this manual, and factory contact information

Safety

machine safety alerts and emergency procedures

Controls

machine controls, gauges, and indicators and how to use them

Prepare

procedures for inspecting and classifying the jobsite, plan ning the installation p ath (if needed), preparing the jobsite for work, and connecting attachments

Drive

procedures for startup, cold start, driving, and shutdown

Transport

procedures for lifting, hauling, and towing

Trench

procedures for trenching

Complete the Job

procedures for restoring the jobsite and rinsing and storing equipment

Service

service intervals and instructions for this machine including lubrication, replacement of wear items, and basic maintenance

Specifications

machine specifications including weights, measurements, power ratings, and fluid capacities

Support

the warranty policy for this machine, and procedures for obtaining warranty consideration and training

101

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Contents - 10 SK850 Operator’s Manual

Service Record

a record of major service performed on the machine

105

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SK850 Operator’s Manual Safety - 11

Safety

Chapter Contents

Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Emergency Procedures . . . . . . . . . . . . . . . . . . . . . 13

• Electric Strike Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

• If an Electric Line is Damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

• If a Gas Line is Damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

• If a Fiber Optic Cable is Damaged . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

• If Machine Catches on Fire. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Safety Alert Classifications . . . . . . . . . . . . . . . . . . 17

Machine Safety Alerts. . . . . . . . . . . . . . . . . . . . . . . 18

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Safety - 12 SK850 Operator’s Manual

Guidelines

Follow these guidelines before operating any jobsite equipment:

• Complete proper training and read operator’s manual before using equipment.

• Contact your local One-Call (811 in USA) or the One-Call referral number (888-258-0808 in USA and Canada) to have underground utilities located before digging. Also contact any utilities that do not participate in the One-Call service. Mark proposed p ath with white paint prior to cont acting One- Call or utilities.

• Classify jobsite based on its hazards and use cor rect tools and machin ery, safety equipment, and work methods for jobsite.

• Mark jobsite clearly and keep spectators away.

• Wear personal protective equipment.

• Review jobsite hazards, safety and emergency procedures, and individual responsibilities with all personnel before work begins. Safety videos are available from your Ditch Witch

ditchwitch.com/resources/safety .

• Replace missing or damaged safety shields and safety signs.

dealer or at

• Use equipment carefully. Stop operation and investigate anything that does not look or feel right.

• Do not operate unit where flammable gas may be present.

• Contact your Ditch Witch dealer if you have any question about operation, ma intenance, or equipment use.

• Complete the equipment checklist located at www.ditchwitch.com/resources/safety.

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SK850 Operator’s Manual Safety - 13

Emergency Procedures

Jobsite hazards could cause death or serious injury. Use correct equipment and work methods. Use and maintain proper safety equipment.

Before operating any equipment, review emergency proc edures and check that all safety precau tions have been taken.

EMERGENCY SHUTDOWN - Turn ignition switch to stop position or push remote e ngine stop button ( if equipped).

Electric Strike Description

or serious injury. Know location of lines and stay away.

274-050

Electric shock. Contacting electric lines will cause death

When working near electric cables, remember the following:

• Electricity follows all paths to ground, not just path of least resistance.

• Pipes, hoses, and cables will conduct electricity back to all equipment.

• Low voltage current can injure or kill. Many work-related electrocutions result from contact with less than 440 volts.

Most electric strikes are not noticeable, but indications of a strike include:

• power outage

•smoke

•explosion

• popping noises

• arcing electricity

If any of these occur, assume an electric strike has occurred.

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Safety - 14 SK850 Operator’s Manual

Emergency Procedures

If an Electric Line is Damaged

If you suspect an electric line has been damaged and you are on tractor, DO NOT MOVE. Remain on tractor and take the following actions. The order and degree of action will depend upon the situation.

• Warn people nearby that an electric strike has occurred. Instruct them to leave the area and contact utility.

• Raise attachments and drive from immediate area.

• Contact utility company to shut off power.

• Do not return to jobsite or allow anyone into area until given permission by utility company.

If you suspect an electric line has been damaged and you are off tractor, DO NOT TOUCH TRACTOR. Take the following actions. The order and degree of action will depend upon the situation.

• LEAVE AREA. The ground surface may be electrified, so take small steps with feet close together to reduce the hazard of being shocked from one foot to the other. For more information, contact your Ditch Witch dealer.

• Contact utility company to shut off power.

• Do not return to jobsite or allow anyone into area until given permission by utility company.

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SK850 Operator’s Manual Safety - 15

Emergency Procedures

If a Gas Line is Damaged

Fire or explosion possible. Fumes could ignite and cause

burns. No smoking, no flame, no spark.

Explosion possible. Serious injury or equipment damage could occur.

Follow directions carefully.

If you suspect a gas line has been damaged, take the following actions. The order and degree of action will depend on the situation.

• Immediately shut off engine(s), if this can be done safely and quickly.

• Remove any ignition source(s), if this can be done safely and quickly.

275-419 (2P)

• Warn others that a gas line has been cut and that they should leave the area.

• Leave jobsite as quickly as possible.

• Immediately call your local emergency phone number and utility company.

• If jobsite is along street, stop traffic from driving near jobsite.

• Do not return to jobsite until given permission by emergency personnel and utility company.

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Safety - 16 SK850 Operator’s Manual

Emergency Procedures

If a Fiber Optic Cable is Damaged

Do not look into cut ends of fiber optic or unidentified cable. Vision damage can occur. Contact utility company.

If Machine Catches on Fire

Perform emergency shutdown procedure and then take the following actions. The order and degree of action will depend on the situation.

• Immediately move battery disconnect switch (if equipped and accessible) to disconnect position.

• If fire is small and fire extinguisher is available, attempt to extinguish fire.

• If fire cannot be extinguished, leave area as quickly as possible and contact emergency personnel.

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SK850 Operator’s Manual Safety - 17

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. YOUR SAFETY IS AT STAKE.

Watch for the three safety alert levels: DANGER, WARNING and CAUTION. Learn what each level means.

indicates a hazardous situation that, if not avoided, will result in death or serious injury. This

signal word is to be limited to the most extreme situations.

indicates a hazardous situation that, if not avoided, could result in death or serious injury.

indicates a hazardous situation that, if not avoided, could result in minor or mo derate injury.

Watch for two other words: NOTICE and IMPORTANT. NOTICE indicates information considered important, but not hazard-related (e.g., messages relating to

property damage).

IMPORTANT can help you do a better job or make your job easier in some way.

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Safety - 18 SK850 Operator’s Manual

Machine Safety Alerts

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Crushing weight. Place cylinder lock on extended

cylinder and secure.

273-413

Read operator’s manual. Know how to use all controls. Your safety is at stake.

Lift point. See Tra nsport chapter for more information.

273-475

274-442

SK850 Operator’s Manual Safety - 19

Machine Safety Alerts

Tiedown location. See Transport chapter for more information.

274-318

275-184

Crushing weight could cause death or serious

Moving parts could cut off hand or foot. Stay away.

injury. Stay away.

275-326

Hot parts may cause burns. Do not touch until cool

or wear gloves.

275-355 (2-P)

Fire or explosion possible. Do not use starter fluid.

273-459 (2P), 274-206 (2P), 700-206 (2P)

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Safety - 20 SK850 Operator’s Manual

Attachment Safety Alerts

TR50

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6ft/2m

cause you to fall. Stay away.

Moving digging teeth can kill. Trench cave-in can

275-097

SK850 Operator’s Manual Controls - 21

Controls

Chapter Contents

Gauges and Indicators. . . . . . . . . . . . . . . . . . . . . . 22

Graphic Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Service Interval Screen . . . . . . . . . . . . . . . . . . . . . 31

Controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Engine Compartment . . . . . . . . . . . . . . . . . . . . . . . 37

Tool Carrier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

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Gauges and Indicators

1. Auxiliary outlet

2. Graphic display

3. Hydraulic fluid level sight glass

4. Fuel gauge

Item Description Notes

1. Auxiliary outlet To operate work lights or

other 12V devices, plug into outlet.

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SK850 Operator’s Manual Controls - 23

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Gauges and Indicators

Item Description Notes

2. Graphic display See “Graphic Display” on

page 24.

3. Hydraulic fluid sight glass

Shows level of hydraulic fluid in tank. Maintain fluid at halfway point on glass.

4. Fuel gauge Shows level of fuel in tank. NOTICE: Use low sulfur or ultra low

sulfur fuel only.

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Controls - 24 SK850 Operator’s Manual

STOP

125

15 20

RPMx100

305

230

190

150

110

0.0V

Tier4

100

Engine

START UP

Load

HRS

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123 4 56 7

12131415161718

Graphic Display

1. High exhaust temperature ind ica to r

2. Air filter restriction indicator

3. Hydraulic fluid temperature indicator

4. Engine over-temperature indica to r

5. Diagnostic message indicator

6. Glow plug indicator

7. DPF regeneration indicator

8. Engine coolant temperature indicator

9. DPF manual indicator

10. Hourmeter

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11. Engine speed setpoint increase button

12. Engine speed setpoint decrease button

13. Menu button

14. Engine speed (RPM)

15. Throttle system state indicator

16. Service reminders button

17. Engine RPM setpoint indicator

18. Tier 4 menu button

19. Electrical system voltage

20. Engine percent load gauge

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Graphic Display

Item Description Notes

1. High exhaust temperature indicator

2. Air filter restriction indicator

3. Hydraulic fluid temperature indicator

Indicates high exhaust temperature.

Indicator will begin flashing once the air filter is 25% unrestricted. Percentage will decrease as air filter becomes more restricted.

For best results, replace filter between 25% and 0%. Reset after replacing air filter.

Lights and alarm sounds when hydraulic fluid is overheating.

IMPORTANT: Will light when DPF regeneration is occurring.

T o view the air filter percentage before 25% unrestricted, press the diagnostics menu button at any time.

Check hydraulic fluid level. Reduce load.

4. Engine overtemperature indicator

Flashes when temperature rises above 230°F (110°C).

Ensure oil cooler is clean.

IMPORTANT: If temperature goes above 230°F (110°C):

1. Stop operation, set throttle to low idle, and allow engine to cool.

2. Stop engine.

3. Check coolant level.

4. Ensure radiator is clean.

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Graphic Display

Item Description Notes

5. Diagnostic message indicator

Appears when there is a diagnostic trouble code.

This indicates a warning code.

This indicates a stop code.

6. Glow plug indicator Lights when ignition switch is

on and glow plug button is pressed.

7. DPF regeneration indicator

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Will flash if regeneration is needed but has not occurred yet.

Will light if regeneration is occurring.

SK850 Operator’s Manual Controls - 27

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HRS

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Graphic Display

Item Description Notes

8. Engine coolant temperature indicator

9. DPF manual indicator Will light when DPF

10. Hourmeter Displays engine operating

Displays coolant temperature. IMPORTANT: If temperature goes

regeneration has been manually delayed.

time.

above 230°F (110°C):

1. Stop operation, set throttle to low idle, and allow engine to cool.

2. Stop engine.

3. Check coolant level.

4. Ensure radiator is clean.

Use these times to schedule service.

11. Engine speed increase button

To increase engine speed, push.

IMPORTANT:

• Increasing engine speed also increases attachment speed.

• Each button press increases engine by 360 rpm.

• Press and hold the increase button to automatically set engine speed to high (3000 rpm).

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Controls - 28 SK850 Operator’s Manual

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STARTUP

AUTO

Graphic Display

Item Description Notes

12. E n gi n e sp e ed de cre as e button

To decrease engine speed, push.

13. Menu button Press to go to the menu

screen.

14. En gi n e sp e ed (RPM ) Displays engine RPM.

IMPORTANT: Each button press

decreases engine by 360 rpm.

15. Throttle system state indicator

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Displays one of the three states of the throttle system.

• Startup indicates the system is controlling its own throttle during startup conditions.

• Auto indicates that the autothrottle system is active and controlling engine throttle based on the user’s selected rpm setpoint. To enable auto-throttle, go to the settings menu.

• No indication means that the rpm setting is under manual control.

SK850 Operator’s Manual Controls - 29

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Tier 4

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Graphic Display

Item Description Notes

16. Service reminders button

17. E n gi ne RPM setpoint indicator

18. Tier 4 menu button Press to go to the DPF

Press to go to the service reminders screen.

Indicates the current throttle setpoint.

control menu.

IMPORTANT:

• When in manual throttle mode, this is the RPM the engine will try to maintain.

• When in auto-throttle mode, this indicates the full throttle setpoint.

19. Electrical system voltage

Displays system voltage. Should show 12-14V with engine

running.

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Graphic Display

Item Description Notes

20. E n gi n e pe rce n t lo ad gauge

Displays the load on the engine.

IMPORTANT: Running the unit with the engine load at 100% for an extended time will cause the engine to stall.

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SK850 Operator’s Manual Controls - 31

ENGINE

INTERVAL 0

REMAINING 0

HRS

HOUR ENG HRS

RESET

768910

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Service Interval Screen

1. Selected service reminder

2. Service reminder interval

3. Time remaining

4. Time base calculator

5. Reset option

6. Return to main gauge display

7. Interval decrease

8. Interval increase

9. Up selection

10. Down selection

Item Description Notes

1. Selected service reminder

Displays current service reminder.

2. Service reminder interval

3. Time remaining Displays time remaining until

Displays current interval of the service reminder.

the next service reminder.

Service reminders are programmed to follow initial service reminders. See the Service chapter on page 67 for intervals.

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Service Interval Screen

Item Description Notes

4. Time base calculator Displays the time base for the

service reminder.

5. Reset option Resets service reminder.

6. Return to main gauge display

Returns to the main gauge display.

7. Interval decrease Selects the previous reminder

or parameter, or decreases service intervals by 10 hours.

8. Interval increase Selects the next reminder or

parameter, or increases service interval by 10 hours.

IMPORTANT: Use the Service chapter beginning on page 67 to set service reminder intervals.

9. Up selection Will move the selection on the

screen up.

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Service Interval Screen

Item Description Notes

10. Do w n selection Will move the selection on the

screen down.

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Controls

1. Left track drive control or Track drive joystick (optional)

2. Right track drive control or Track drive joystick (optional)

3. Parking brake switch

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4. Ignition switch

5. Lift arm control

6. Attachment drive control

7. Attachment drive foot control

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Controls

Item Description Notes

1. Left track drive control

2. Right track drive control

Track drive joystick (optional)

To move forward, push. To move backward, pull. To go faster in either

direction, move control farther from neutral position.

To stop, move to neutral position.

To move forward, push. To move backward, pull. To go faster in either

direction, move control farther from neutral.

To stop, move to neutral.

To turn right, move left control farther forward than right control.

To turn left, move right control farther forward than left control.

To counter-rotate in either direction, move controls in opposite directions as indicated above.

To steer while moving forward, push joystick forward, then move left or right. Unit will gradually turn left or right.

To steer while moving backward, pull joystick back, then move left or right. Unit will gradually turn left or right.

For tight steering in low speed, move joystick to center position then to left or right side. Tracks will counter rotate and turn unit in a tight circle.

3. Parking brake switch To engage, move red switch

toward operator and press back of switch down.

To disengage, move red switch toward operator and press front of switch down.

IMPORTANT:

• Only apply parking brake when unit is at rest.

• Parking brake disengages hydraulics.

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Controls - 36 SK850 Operator’s Manual

Controls

Item Description Notes

4. Ignition switch T o star t engine, insert key and

turn clockwise. To stop engine, turn key

counterclockwise.

5. Lift arm control To move lift arms down, push. To float, push forward to end. To move lift arms up, pull. To curl attachment up, move

to left. To curl attachment down,

move to right.

6. Attachment drive

control

To engage attachment drive in reverse, lift lever lock and push forward.

To engage attachment drive in forward, lift lever lock and pull back.

IMPORTANT:

• If engine does not start or stalls, turn key to STOP and then restart.

• Do not allow starter motor to run continuously for more than 20 seconds.

IMPORTANT: Exercise caution when lifting loads. See page 98 for operating capacities.

IMPORTANT: If unit is equipped with TR50 trencher, this will raise and lower boom.

IMPORTANT:

• Lever lock engages when control is in neutral.

• Use foot pedal to hold attachment control in the on position when hands are busy operating lift arm or track drive controls.

7. Attachment drive foot control

CMW

To hold attachment drive in engaged position (forward or reverse), lift lever lock, move lever in desired direction, and press pedal.

To return attachment drive control to neutral, release pedal.

IMPORTANT: Use foot pedal to hold attachment control in the on position when hands are busy operating lift arm or track drive controls.

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Engine Compartment

1. Battery disconnect switch

Item Description Notes

1. Battery disconnect switch

To connect, turn clockwise. To disconnect, turn

counterclockwise.

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Tool Carrier

1. Level indicator 2. Attachment latches

Item Description Notes

1. Level indicator To level bucket, adjust bucket

position until indicator is at top of sleeve.

2. Attachment latches To lock attachment, move

latch down. To unlock attachment, move

latch up.

CMW

To level other attachments, adjust attachment position until it is level. Mark indicator position on sleeve. Use mark to indicate level with that attachment.

SK850 Operator’s Manual Prepare - 39

Prep are

Chapter Contents

Gather Information . . . . . . . . . . . . . . . . . . . . . . . . . 40

Inspect Site . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

• Identify Hazards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Classify Jobsite . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

• Inspect Jobsite . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

• Select a Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

• Apply Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43

Check Supplies and Prepare Equipment . . . . . . . 44

• Supplies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

• Fluid Levels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

• Condition and Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

• Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Connect Attachment . . . . . . . . . . . . . . . . . . . . . . . 45

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Prepare - 40 SK850 Operator’s Manual

Gather Information

A successful job begins before you start working. The fi rst step in planning is reviewing information already available about the job and jobsite.

Review Job Plan

Review blueprints or other plans. Check for information about exi sting or planned structur es, elevations, or proposed work that may be taking place at the same time.

Arrange for Traffic Control

If working near a road or other traffic area, contact local authorities about safety procedures and regulations.

Plan for Emergency Services

Have the telephone numbers for local emergency and medical facilities on hand. Check that you will have access to a telephone.

Notify One-Call Services

Contact your local One-Call (811 in USA) or the One-Call referral number (888-258-0808 in USA and Canada) to have underground utilities located before digging. Also contact any utilities that do not participate in the One-Call service.

Locate Overhead Lines

Note location and height of all overhead lines in jobsite and ensure that fully lifted attachment and/or load cannot touch lines.

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SK850 Operator’s Manual Prepare - 41

Inspect Site

Inspect jobsite before transporting equipment. Check for the following:

• changes in elevation such as hills or other open trenches

• obstacles such as buildings, railroad crossings, or streams

• signs of utilities (See “Inspect Jobsite” on page 42.)

•traffic

•access

• soil type and condition

Identify Hazards

Identify safety hazards and classify jobsite if attachment will penetrate ground. See “Classify Jobsite” on page 42.

Jobsite hazards could cause death or serious injury. Use correct equipment and work methods. Use and maintain proper safety equipment.

To help avoid injury:

• Wear personal protective equipment including hard hat, safety eye wear, and hearing protection.

• Do not wear jewelry or loose clothing.

• Notify One-Call and companies which do not subscribe to One-Call.

• Comply with all utility notification regulations before digging or drilling.

• Verify location of previously marked underground hazards.

• Mark jobsite clearly and keep spectators away.

Remember, jobsite is classified by hazards in place -- not by line being installed.

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Prepare - 42 SK850 Operator’s Manual

Classify Jobsite

Inspect Jobsite

• Inspect jobsite and perimeter for evidence of underground hazards, such as: – “buried utility” notices

– utility facilities without overhead lines – gas or water meters – junction boxes – drop boxes – light poles – manhole covers – sunken ground

• Follow U.S. Department of Labor regulations on excavating and trenching (Part 1926, Subpar t P) and other similar regulations.

• Have an experienced locating equipment operator sweep area within 20’ (6 m) to each side of work path. Verify previously marked line and cable locations.

• Mark location of all buried utilities and obstructions.

• Classify jobsite.

Select a Classification

Jobsites are classified according to underground hazards present.

If working . . . then classify jobsite as . . .

within 10’ (3 m) of a buried electric line electric within 10’ (3 m) of a natural gas line natural gas in sand or granite which is capable of producing crystalline silica

(quartz) dust within 10’ (3 m) of any other hazard other

NOTICE: If you have any doubt about jobsite classification, or if jobsite might contain unmarked hazards, take steps outlined previously to identify hazards and classify jobs ite be fo re wor kin g.

crystalline silica (quartz) dust

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SK850 Operator’s Manual Prepare - 43

Classify Jobsite

Apply Precautions

Once classified, precautions appropriate for jobsite must be taken.

Electric Jobsite Precautions

Use one or both of these methods.

• Expose line by careful hand digging or soft excavation.

• Have service shut down while work is in progress. Have electric company test lines before returning them to service.

Natural Gas Jobsite Precautions

In addition to positioning equipment upwind from gas lines, use one or both of these methods.

• Expose lines by careful hand digging or soft excavation.

• Have gas shut off while work is in progress. Have gas company test lines before returning them to service.

Crystalline Silica (Quartz) Dust Precautions

Use breathing protection when exposed to silica dust.

270-4952

Cutting, drilling, or working materials such as concrete, sand, or rock containing quartz may result in exposure to silica dust. Use water spray or other means to control dust. If workers are exposed to dust they must wear appropriate breathing protection. Silica dust may cause lung disease and is known to the State of California to cause cancer.

Other Jobsite Precautions

You may need to use different methods to safely avoid other underground hazards. Talk with those knowledgeable about hazards present at each site to determine which precautions should be taken or if job should be attempted.

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Prepare - 44 SK850 Operator’s Manual

Check Supplies and Prepare Equipment

Supplies

•fuel

NOTICE: Use low sulfur or ultra low sulfur fuel only.

•keys

•lubricants

• personal protective equipment, such as hard hat and safety glasses

Fluid Levels

•fuel

NOTICE: Use low sulfur or ultra low sulfur fuel only.

• hydraulic fluid

• battery charge

• engine oil

Condition and Function

• parking brake pins (See “Check Brake Operation” on page 73.)

• filters (air, oil, hydraulic)

•tracks

• pumps and motors

• hoses and valves

• signs, guards, and shields

Accessories

Fire Extinguisher

If required, mount a fire extinguisher near the power unit but away from possible points of ignition. The fire extinguisher should always be classified for both oil and electric fires. It should meet legal and regulatory requirements.

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SK850 Operator’s Manual Prepare - 45

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Connect Attachment

NOTICE: Use only Ditch Witch®-approved attachments. Attachments can change the stability and operating characteristics of the unit. See attachment operatio n man ual for instructions rega rd ing p roper operation of attachments.

Attachment

IMPORTANT: Before connecting attachment to unit,

ensure that mount and receiver plates are free of dirt and debris.

1. Position attachment on level surface with enough space behind it to accommodate unit.

2. Start engine.

3. Tilt mount plate (2) forward.

4. Position mount plate in the upper lip of the receiver plate (1) on attachment.

5. Raise lift arms while tilting back mount plate.

IMPORTANT: Attachment should be raised enough to clear the ground. Mount plate should be tilted back fully.

6. Pins will automatically engage.

Read operator’s manual. Know how to use all controls.

Your safety is at stake. T o help avoid injury: Ensure pro per connection by ve rifying that bo ttoms

of lock pins are visible under attachment receiver plate (shown).

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Prepare - 46 SK850 Operator’s Manual

Connect Attachment

7. Ensure pins are engaged by rotating attachment down.

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SK850 Operator’s Manual Prepare - 47

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Connect Attachment

Hydraulic Hoses

If attachment requires hydraulic power for operatio n , con ne ct hyd ra ulic ho se s.

Pressurized fluid or air could pierce skin and cause

severe injury. Refer to operator’s manual for proper use.

To help avoid injury:

• Escaping pressurized fluid can cause injury or pierce skin and poison.

• Before disconnecting a hydraulic line, turn engine off and ope rate all controls to relieve pressure. Lower, blo ck, or support any raised component with a hoist. Cover connection with heavy clo th and loosen connector nut slightly to relieve residual pressure. Catch all fluid in a container.

• Before using system, check that all connections are tight and all lines are undamaged.

• Use a piece of cardboard or wood, rather than hands, to search for leaks.

• Wear protective clothing, including gloves and eye protection.

• If you are injured, seek immediate medical attention from a doctor familiar with this type of injury.

Hot parts may cause burns. Do not touch until cool.

To help avoid injury: Wear gloves when connecting and disconnecting hydraulic hoses and wait until unit has cooled before touching hydraulic components.

1. Cycle attachment drive control to relieve residual pressure at hydraulic couplers.

2. Remove dirt and debris from hydraulic couplers.

3. Connect male coupler on attachment to female coupler (3) on unit.

4. Connect female coupler on attachment to male coupler (1) on unit.

5. If needed, connect attachment case drain hose to case drain connector (2).

6. Ensure that connections are secure by pulling on hoses.

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Prepare - 48 SK850 Operator’s Manual

Connect Attachment

CMW

SK850 Operator’s Manual Drive - 49

Drive

Chapter Contents

Start Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Shut Down. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

CMW

Drive - 50 SK850 Operator’s Manual

Start Unit

1. Ensure all controls are in neutral.

2. If necessary, use glow plugs to warm cold engine.

3. Move throttle to half open.

4. Turn ignition switch to start position and release when engine starts.

EMERGENCY SHUTDOWN: Turn ignition switch to STOP.

Drive

General Operation

Tipover possible. Machine can tip over and crush you.

To help avoid injury:

• Always operate with load end uphill.

• Always carry load low. High load can cause tipping, loss of load or loss of visibility.

• Never jerk control levers. Use a steady even motion.

• See page 98 for operating capacity.

1. Disengage parking brake.

2. Pull lift arm control to raise mount plate (and attachment) off gro und.

3. Move track drive control to steer unit. See page 35.

IMPORTANT: If needed for attachment operation, push attachment drive foot control to hold attachment control in the forward position while operating track drive and lift arm controls.

4. Adjust throttle as needed.

5. See attachment operation manual for instructions regarding proper operation of attachments.

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SK850 Operator’s Manual Drive - 51

Drive

Safe Slope Operation

Tipover possible. Machine can tip over and crush you.

To help avoid injury:

• Always operate with heavy end uphill.

• Always carry load low. High load can cause tipping, loss of load or loss of visibility.

• Drive cautiously at all times.

• Never jerk control levers. Use a steady even motion.

• Do not park unit on slope without lowering attachment to the ground,

returning all controls to neutral position, shutting down unit, and applying parking brake.

• See page 98 for operating capacity.

Operating safely on a slope depends upon many factors including:

• Distribution of machine weight, including front loading and absence of load

• Height of load

• Even or rough ground conditions

• Potential for ground giving way causing unplanned tilt forward, reverse or sideways

• Nearness of ditches, ruts, stumps or other obstructions and sudden changes in slope

• Speed

• Turning

• Braking performance

• Operator skill

These varying factors make it impractical to specify a maximum safe operating angle in this manual. It is therefore important for the operator to be awa re of these conditions and adjust operation accordingly. Maximum engine angle and braking performance are two absolute limits which must never be exceeded. These maximums are stated below since they are design limit s. T hese desig n limits usually exceed the

operating limits and must never be used alone to establish safe operating angle for variable conditions.

Maximum engine lubrication angle – 20° Maximum service brake retarding force – equal to traction of both tracks. Maximum park brake holding force – equal to traction of one track.

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Drive - 52 SK850 Operator’s Manual

Shut Down

1. Lower lift arms to ground.

2. Move all controls to neutral position.

3. Engage parking brake.

4. Turn ignition switch to STOP.

5. Remove key.

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SK850 Operator’s Manual Transport - 53

Transport

Chapter Contents

Lift . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

• Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

• Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55

Haul . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

• Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

• Tie Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

• Unload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Tow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59

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Transport - 54 SK850 Operator’s Manual

Lift

Crushing weight. If load falls or moves it could kill or crush

you. Use proper procedures and equipment or stay away.

To help avoid injury: Only lift unit without attachment installed.

Points

Lifting points are identified by lifting decals. Lifting at other points is unsafe and can damage machinery.

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SK850 Operator’s Manual Transport - 55

Lift

Procedure

Use a hoist capable of supporting the equipment's size and weight. See “Specifications” on page 97 or measure and weigh equipment before lifting.

Use one of the methods below:

• Use two points nearest operator station.

IMPORTANT: Front of unit will be lower than rear of unit when using only two lift points.

• Use three lift points as shown.

NOTICE: Do not lift unit with attachments installed.

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Transport - 56 SK850 Operator’s Manual

Haul

Load

Crushing weight. If load falls or moves it could kill or crush

you. Use proper procedures and equipment or stay away.

To help avoid injury:

• Load and unload trailer on level ground.

• Incorrect loading can cause trailer swaying.

• Attach trailer to vehicle before loading or unloading.

• Only operate unit from operator platform.

• To help prevent trailer sway, load trailer so that ten to fifteen percent of total vehicle weight (equipment plus trailer) is on tongue.

• If loading onto tilt-bed trailer, be prepared for trailer to tilt.

• Move all controls to neutral position when stopped.

1. Disengage parking brake.

2. Start engine.

3. Adjust throttle to low speed.

4. Pull lift arm control to raise mount plate (and attachment) clear of trailer, but keep it low.

5. Move unit to rear of trailer and align with ramps.

6. Drive forward slowly to move unit onto trailer until tiedown position is reached.

7. Push lift arm control to lower mount plate (and attachment) to trailer bed.

8. Engage parking brake.

9. Ensure that all controls are in neutral position.

10. Turn ignition switch to STOP.

11. Tie down unit.

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SK850 Operator’s Manual Transport - 57

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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

Loop tiedowns around unit at tiedown points. Make sure tiedowns are tight before transporting.

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Transport - 58 SK850 Operator’s Manual

Haul

Unload

Crushing weight. If load falls or moves it could kill or crush

you. Use proper procedures and equipment or stay away.

To help avoid injury:

• Load and unload trailer on level ground.

• Attach trailer to vehicle before loading or unloading.

• Only operate unit from operator platform.

• If unloading from tilt-bed trailer, be prepared for trailer to tilt.

1. Prepare trailer and ramp s for unloading.

2. Remove tiedowns.

3. Start engine.

4. Disengage parking brake.

5. Pull lift arm control to raise mount plate (and attachment) off gro und, but keep it low.

6. Adjust throttle to low speed and slowly back unit down trailer or ramps.

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SK850 Operator’s Manual Transport - 59

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rear tow point front tow point

Tow

Read operator’s manual. Know how to use all controls.

Your safety is at stake.

Under normal conditions, unit should not be towed. If unit breaks down and towing is necessary:

273-475

• attach chains to tow points facing towing vehicle

• tow for short distances at less than 1 mph (1.6 km/h)

• do not tow for more than 100’ (30 m)

• use no more than 1,300 lb (5800 N) of towing force

• open bypass valve on each pump section

NOTICE: When bypass valve is open, unit has no brakes.

• if engine will not start, remove rear panel and unbolt parking brake assembly

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Transport - 60 SK850 Operator’s Manual

Tow

Prepare Unit for Towing

1. Block tracks.

2. Engage parking brake (shown).

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3. Loosen bypass valves (shown) three turns.

IMPORTANT: Open bypass valves in both front and rear pumps.

NOTICE: When bypass valves are open, unit has no brakes.

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Return Unit to Normal Operation

1. Tighten bypass valves and tighten locknut to 15-18 ft•lb (20-25 N•m).

IMPORTANT: Close bypass valve in both front and rear pumps.

2. Disengage parking brake.

3. Unblock tracks.

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SK850 Operator’s Manual Trench - 61

Trench

Chapter Contents

Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62

Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

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Trench - 62 SK850 Operator’s Manual

Setup

EMERGENCY SHUTDOWN - Turn ignition switch to STOP.

Crushing weight could cause death or serious injury. Use

proper procedures and equipment or stay away.

T o help avoid injury: Use attachments or counterweights to make front and rear loads balance when all

attachments are raised. Contact your Ditch Witch

correct equipment and work methods. Use and maintain proper safety equipment.

dealer about counterweighting for your equipment.

Jobsite hazards could cause death or serious injury. Use

To help avoid injury: Comply with all utility notification regulations before digging or drilling.

Read operator’s manual. Know how to use all controls.

Your safety is at stake.

1. Start unit. See page 50 for start-up procedures.

2. Drive to starting point. Move in line with planned trench. See page 50 for operating procedures.

IMPORTANT:

• When cutting asphalt, start trench in soil at edge of road an d use sh or te st po ssib l e boo m at full depth.

• Sight along center of hood to a stake driven beyond end of trench line for straight trench.

3. Engage parking brake.

4. Lower boom to just above ground.

5. Check that attachment speed/direction control and ground drive controls are in neutral.

273-475

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SK850 Operator’s Manual Trench - 63

6ft/2m

Setup

Operation

Use breathing protection when exposed to silica dust.

270-4952

Electrical shock. Contacting electrical lines will cause death or serious

injury. Know location of lines and stay away.

To help avoid injury: Expose lines by hand before digging. Cutting high voltage cable can cause electrocution.

Read operator’s manual. Know how to use all controls.

Your safety is at stake.

273-475

To help avoid injury:

• Comply with all utility notification regulations before digging or drilling.

• Notify companies that do not subscribe to One-Call.

Flying objects thrown by machine may strike people.

Wear hard hat and safety glasses.

275-193

Moving digging teeth will cause death or serious injury.

Stay away.

275-097

To help avoid injury:

• Ensure parking brake is engaged.

• Allow 3’ (1 m) between digging teeth and obstacle. Machine might jerk when digging starts.

• Keep everyone at least 6’ (2 m) from machine, attachments, and their range of movement.

1. Adjust throttle to low idle.

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Trench - 64 SK850 Operator’s Manual

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Setup

2. Engage attachment control.

3. Increase engine speed to full throttle.

4. Slowly lower digging boom to depth.

5. Move ground drive control to desired speed.

6. Pull ground drive control rearward to desired trenching speed. Trenching movement is toward you.

NOTICE:

• Do not make sharp turns. Lower boom to full depth when turning.

• If an object becomes lodged in chain, move attachment speed/direction control to neutral and raise boom slightly. Reverse chain direction. If object must be removed manually, turn engine off and engage parking brake.

7. When trench is complete, move ground drive control to neutral.

8. Adjust throttle to low idle.

9. Raise boom.

10. As boom clears top of trench, move attachment speed/direction control to neutral.

11. Drive a short distance away from work site.

12. Shut down unit. See page 52 for proper shutdown procedures.

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SK850 Operator’s Manual Complete the Job - 65

Complete the Job

Chapter Contents

Rinse Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . 66

Disconnect Attachment . . . . . . . . . . . . . . . . . . . . . 66

Stow Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66

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Complete the Job - 66 SK850 Operator’s Manual

Rinse Equipment

1. Spray water onto equipment to remove dirt and mud.

NOTICE: Do not spray wa ter onto operator’s console. Electrical compone nts could be damaged . Wipe down instead.

2. Open hood and allow unit to cool. Remove debris from inside of unit.

3. Remove mud from track sprockets.

4. Wash undercarriage. Pay special attention to brake pin area.

Disconnect Attachment

1. Lower attachment to the ground.

2. Turn off engine.

3. Disengage lock pins by lifting handles upward.

4. Cycle attachment drive control and disconnect hydraulic hoses, if used.

5. Start engine.

6. Tilt mount plate forward and back unit away from attachment.

Stow Tools

Make sure all tools and accessories are loaded and properly secured on trailer.

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SK850 Operator’s Manual Service - 67

Service

Chapter Contents

Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

• Working under Raised Lift Arms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

• Welding Precaution. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69

Recommended Lubricants/Service Key . . . . . . . . 69

Engine Oil Temperature Chart . . . . . . . . . . . . . . . 70

10 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72

50 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

200 Hour. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

500 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

2000 Hour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

As Needed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

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Service - 68 SK850 Operator’s Manual

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Precautions

Read operator’s manual. Know how to use all controls.

Your safety is at stake.

To help avoid injury:

• Unless otherwise instructed, all service should be performed with engine off.

• Before servicing equipment, lower unstowed attachments to ground.

Working under Raised Lift Arms

Crushing weight. Place cylinder lock on extended cylinder

and secure.

273-231

273-475

Use safety supports as indicated when working under raised lift arms.

Welding Precaution

NOTICE: Welding can damage electronics.

• Disconnect battery to prevent damage to battery. Do not turn off battery disconnect switch with engine running, or alternator and other electronic devices may be damaged.

• Connect welder ground clamp close to welding point and make sure no electronic components are in the ground path.

• Always disconnect the Engine Control Unit ground connection from the frame, harness conne ctions to the ECU, and other electronic components prior to welding on machine or attachments.

CMW

SK850 Operator’s Manual Service - 69

500 h 200 h 50 h 10 h

Overview

Recommended Lubricants/Service Key

Item Description

DEO Diesel engine oil meeting API service classification CF-4 or E1-96 and SAE viscosity

recommended by engine manufacturer (SAE 15W40)

THF

MPG Multipurpose grease meeting NLGI GC-LB Grade 2

Proper lubrication and maintenance protects Ditch Witch® equipment from damage and failure. Service intervals listed are for minimum requirements. In ex treme conditions, service machine more frequently. Use only genuine Ditch Witch parts, filters, approved lubricants, TJC, and approved coolants to maintain warranty. Fill to capacities listed in “Specifications” on page 71.

Tractor hydraulic fluid, similar to Phillips 66 Hydraulic Fluid, Texaco

Check level of fluid or lubricant Check condition

Filter Change, replace, adjust, service or

TDH Oil, or equivalent

HG, Mobilfluid® 423, Chevron® Tractor

test

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Service - 70 SK850 Operator’s Manual

Temperature range anticipated before next oil change

SAE 10W

SAE 20W

SAE 5W - 30

SAE 10W - 30

SAE 15W - 40

SAE #20

SAE #30

SAE #40

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Engine Oil Temperature Chart

For more information on engine lubrication and maintenance, see your engine manual.

IMPORTANT: Use the “Service Record” on page 105 to record all required service to your machine.

Engine Oil Temperature Chart

For more information on engine lubrication and maintenance, see your engine manual.

Approved Coolants

This unit was filled with John Deere® Cool-Gard® coolant before shipment from factory. Add only CoolGard (p/n 255-006) or any fully-formulated, ethylene glycol based, low-silicate, heavy-duty diesel engine coolant meeting ASTM specification D5345 (prediluted) or D4985 (concentrate). Before using any other kind of coolant, completely flush radiator.

NOTICE: Do not mix heavy-duty diesel engine coolant and automotive-type coolant. This will lead coolant breakdown and engine damage.

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SK850 Operator’s Manual Service - 71

Engine Oil Temperature Chart

Approved Fuel

The engine is this unit is designed to run on diesel fuel. Use o nly high-quality fuel meeting ASTM D975 No. 2D, EN590, or equivalent. At temperatures below 32°F (0°C), winter fuel blends are acceptable. See engine operation manual for more information.

IMPORTANT:

• For machines operated in the U.S.: The engine in this product is certified to operate on low sulfur diesel fuel (LSD) with a sulfur content of 500 ppm (0.05%) or less. Use LSD or ultra low sulfur fuel (ULSD) only. Using fuels with higher sulfur content will affect exhaust emissions. Such action is a violation of the US Clean Air Act and US EPA regulations and will result in fines.

• For machines operated outside the U.S.: Fuel sulfur content shou ld be less than 5000 ppm (0.05%). Worldwide fuel sulfur regulations vary widely. Fuel used should always comply with local regulations. If fuel sulfur content exceeds 5000 ppm, use a lube oil meeting API CF (or equivalent) with a TBN value of 10 or greater. Do not use lube oils meeting API CJ-4 (or other low SAPS equivalent) under any conditions.

Biodiesel blends up to 5% (B5) are approved for use in this unit. The fuel must meet the specifications for diesel fuel shown above. In certain markets, hig her blends may be used if certain steps are taken. Extra attention is needed when using biodiesel, especially when operating in cold weather or storing fuel.

Contact your Ditch Witch

dealer or the engine manufacturer for more information.

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Service - 72 SK850 Operator’s Manual

Startup/10 Hour

Location Task Notes

Check engine oil level DEO Check engine air filter service indicator Check engine coolant level DEAC Check hydraulic fluid level THF Check brake operation Check track tension Check lug nut torque 88-95 ft•lb (108-129 N•m) Check hydraulic hoses

TR50 Lube auger bearing MPG

Check digging chain tension Check restraint bar position MPG

Check Engine Oil Level

Check engine oil level at dipstick opening (1) at startup and every 10 hours. Raise lift arms and install safety supports. See “Working under Raised Lift Arms” on page 68. Oil level should be at top of marking. If low, add DEO at fill (2). Check with unit on level surface and at least 15 minutes

after stopping engine.

IMPORTANT: Use oil specified in “Engine Oil Temperature Chart” on page 70.

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SK850 Operator’s Manual Service - 73

Startup/10 Hour

Check Engine Air Filter Service Indicator

Check air filter service indicator (shown) at startup and every 10 hours and change filter as needed. See “Change Air Filter” on page 87.

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Check Hydraulic Fluid Level

Check hydraulic fluid level at startup and every 10 hours. Maintain fluid level at halfway point on sight glass (2), when engine is off, cylinders are fully retracted, and fluid is cool. If low, add THF at fill (1).

Check Brake Operation

Check brake operation at startup and every 10 hours or more often when conditions warrant.

• Ensure parking brake pin (shown) moves freely allowing brake to be engaged and disengaged.

• Clean mud and debris from area around pin.

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Service - 74 SK850 Operator’s Manual

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Startup/10 Hour

Check Lug Nut Torque

Check lug nut torque at 10 hours, 50 hours and every 200 hours thereafter. Tighten to 88-95 ft•lb (108-129 N•m) as needed.

Check Track Tension

Check track tension at startup and every 10 hours and adjust as needed. Track is correctly tensioned when measurement between track and straight edge (2) is 1/2 in (13 mm).

To adjust:

1. Park machine on smooth, flat surface.

2. Lay straight edge on top of track, spanning from sprocket to front idler roller.

3. Clean track cylinder zerk (1). Pump MPG into zerk until distance between track and straight edge (2) is 1/2” (13 mm).

4. Test: Drive forward one track length and check tension again.

• If tension is too loose, repeat step 3

above.

• If tension is too tight, loosen fitting on

grease cylinder and allow a small amount of grease to discharge from cylinder. Tighten fitting and test again.

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SK850 Operator’s Manual Service - 75

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Startup/10 Hour

Check Coolant Level

Check coolant level, with engine cool, at overflow bottle at startup and every 10 hours. Maintain coolant level at halfway point on bottle. If low, add approved coolant.

IMPORTANT: See page 70 for information on approved coolants.

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Service - 76 SK850 Operator’s Manual

Startup/10 Hour

Check Hydraulic Hoses

Pressurized fluid or air could pierce skin and cause severe

injury. Refer to operator’s manual for proper use.

To help avoid injury:

• Before disconnecting a hydraulic line, turn engine off and operate all controls to relieve pressure. Lower, block, or support any raised component with a hoist. Cover connection with heavy cloth and loosen connector nut slightly to relieve residual pressure. Catch all fluid in a container.

• Before using system, check that all connections are tight and all lines are undamaged.

• Use a piece of cardboard or wood, rather than hands, to search for leaks.

• Wear protective clothing, including gloves and eye protection.

• If you are injured, seek immediate medical attention from a doctor familiar with this type of injury.

270-6035

Check hydraulic hoses for leaks at startup and every 10 hours.

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SK850 Operator’s Manual Service - 77

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Startup/10 Hour

TR50

Lube Auger Bearing

Lube auger bearing zerk with MPG every 10 hours.

Check Digging Chain Tension

Check digging chain tension every 10 hours and adjust as needed. With boom horizontal, measure distance A from bottom of boom to chain. When properly tensioned, distance A should be 1.5-2.0”

(38-51 mm).

NOTICE: Do not overtighten chain. Overtightening will cause chain stretch, loss of machine performance, and possible premature chain failure.

Adjustment Screw:

1. Loosen four clamp bolts (2) so that boom slides freely .

2. Loosen jam nut on adjustment screw (1).

3. To tighten digging chain, turn adjustment screw clockwise. To loosen digging chain, turn counterclockwise.

4. When proper tension is reached, tighten jam nut.

5. Torque clamp bolts to 75 ft•lb (102 N•m).

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Service - 78 SK850 Operator’s Manual

Startup/10 Hour

Check Restraint Bar Position

Check restraint bar position every 10 hours, or anytime the digging chain is adjusted or replaced. The restraint bar is properly positioned when the end of bar extends between the center of the tail roller/sprocket and the end of the digging chain.

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SK850 Operator’s Manual Service - 79

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50 Hour

Location Task Notes

Change engine oil and filter initial service Check fan belt tension and damage 1/4-1/3” (7-9 mm) Change hydraulic fluid filter initial Check fuel hose and clamp band Check radiator/hydraulic fluid cooler for dirt and

debris Check lug nut torque 88-95 ft•lb (108-129 N•m) Check idler roller bearings

Change Engine Oil and Filter (Initial)

Change engine oil after 50 hours. Raise lift arms and install safety supports. See “Working under Raised Lift Arms” on page 68. Drain oil (1) and add 5 qt (4.7 L) of DEO at fill (2).

IMPORTANT: Use oil specified in “Engine Oil Temperature Chart” on page 70.

Change Hydraulic Filter (initial)

Change hydraulic filter after 50 hours.

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50 Hour

Check Fan Belt for Tension and Damage

Check belt tension every 50 hours. Belt is properly tensioned when it moves about 1/4-3/8” (7-9 mm) when pushed at the long span. Replace the belt when it is worn and sinks into the pulley groove.

Adjust Tension

1. Loosen two alternator bolts (shown).

2. Adjust position as needed.

3. Tighten bolts.

4. Check tension.

Check Fuel Hose and Clamp Bands

Check fuel hose and clamp bands every 50 hours.

If the clamp is loose, apply oil to the threads and retighten it. If the hose is worn, replace it.

Bleed the fuel system if the hose and/or clamp is changed.

Check Radiator/Fluid Cooler

Check radiator/hydraulic fluid cooler for dirt, grass, and other foreign matter every 50 hours. Clean out with compressed air or spray wash if required. Be careful not to damage fins with highpressure air or water. Check more often if operating in dusty or grassy conditions.

Check radiator hoses for wear. Check hose clamps for proper tightness.

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SK850 Operator’s Manual Service - 81

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50 Hour

Check Lug Nut Torque

Check lug nut torque at 10 hours, 50 hours and every 200 hours thereafter. Tighten to 88-95 ft•lb (108-129 N•m) as needed.

Check Idler Roller Bearings

Check for proper idler roller bearing positioning by lifting unit off of the ground and rocking each hub to check for movement. If adjustment is needed, see “Adjust Idler Roller Bearings” on page 89.

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Service - 82 SK850 Operator’s Manual

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200 Hour

Location Task Notes

Change engine oil and filter DEO Check intake air line 1/4-1/3” (7-9 mm) Change hydraulic filter Check lug nut torque 88-95 ft•lb (108-129 N•m) Check idler roller bearings

Change Engine Oil and Filter

Change engine oil and filter every 200 hours. Raise lift arms and install safety supports. See “Working under Raised Lift Arms” on page 68. Drain oil (1), change filter (2) and add 5 qt (4.7 L) of DEO at fill (3). See page 79.

IMPORTANT: Use oil specified in “Engine Oil Temperature Chart” on page 70.

Check Intake Air Line

Check the intake air line every 200 hours.

NOTICE: Keep dust out of the int ake air line to prevent damage to the engine.

If the clamp is loose, apply oil to the threads and retighten it.

If the hose appears cracked or worn, replace it.

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SK850 Operator’s Manual Service - 83

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200 Hour

Change Hydraulic Filter

Change hydraulic filter every 200 hours.

Check Lug Nut Torque

Check lug nut torque at initial intervals and every 200 hours thereafter. Tighten to 88-95 ft•lb (108129 N•m) as needed.

Check Idler Roller Bearings

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Service - 84 SK850 Operator’s Manual

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500 Hour

Location Task Notes

Change fuel filter Change hydraulic fluid and filter Change water separator filter

Change Fuel Filter

Change filter every 500 hours. If you refuel from cans, replace filter more often.

The canister filter is located in the engine compartment.

See parts manual or contact your Ditch Witch dealer for correct replacement filter.

Change Hydraulic Fluid and Filter

Change hydraulic fluid and filter every 500 hours. Change every 250 hours if jobsite temperature exceeds 100°F (38°C) more than 50% of the time.

1. Remove drain plug (3).

2. Drain fluid and replace plug.

3. Change filter. See page 83.

4. Add THF at fill (1) until fluid level is at halfway point on sight glass (2). Capacity is 9.2 gal (35 L).

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SK850 Operator’s Manual Service - 85

500 Hour

Change Water Separator Filter

Change water separator filter every 500 hours.

1. Turn off at valve (1).

2. Purge fuel out of filter by unscrewing bottom drain plug (2).

3. Unscrew bottom of filter (3).

4. Replace filter (4).

5. Screw bottom of filter back on.

6. Turn on at valve.

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Service - 86 SK850 Operator’s Manual

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2000 Hour

Change Engine Coolant

Drain cooling system at drain (2). Add approved coolant at fill (1) every two years or 2000 hours.

NOTICE:

• The use of non-approved coolant may lead to engine damage or premature engine failure and will void engine warranty.

• See page 70 for list of approved coolants.

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SK850 Operator’s Manual Service - 87

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As Needed

Location Task Notes

Change air filter Check water separator filter Adjust idler roller bearings Check battery Charge battery

TR50 Check digging chain rollers, sidebars, pins, and

bushings Check digging chain teeth and bits Check trencher headshaft sprocket bolts Replace digging chain

Change Air Filter

Change air filter when red band on indicator (1) is visible. Replace safety element (4) every third change of primary filter (3) or any time primary element has become damaged.

1. Open air filter housing at latches (2).

2. Remove primary element (3).

3. Wipe inside of housing and end cup (2).

4. Insert new primary element.

5. Latch air filter case.

6. Reset air filter service indicator (1).

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Service - 88 SK850 Operator’s Manual

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As Needed

Check Water Separator Filter

Drain water separator filter when red float ring is raised, indicating water in the filter.

1. Turn off at valve (1).

2. Unscrew drain plug (2) at bottom and dr ain water out.

3. Tighten drain plug.

4. Turn on at valve.

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SK850 Operator’s Manual Service - 89

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As Needed

Adjust Idler Roller Bearings

Adjust idler roller bearings to keep dirt, grass, and other foreign matter from damaging bearings as needed when hubs become loose.

1. Remove dust cap (1).

2. Ensure bearings are properly seated by tightening castle nut (2) to 30-40 ft•lb (40.7-

54.2 N•m) while turning the hub (3).

IMPORTANT: Do not move the hub after this step is completed.

3. Loosen the castle nut (2).

4. Hand-tighten the castle nut.

5. Insert the cotter pin (4) into the wheel sp indle (5).

IMPORTANT: If cotter pin cannot be inserted, loosen the castle nut until it can be.

6. Bend the legs of the cotter pin over the top of the spindle.

IMPORTANT:

• When assembled correctly, the castle nut should be free to move by hand with only the cotter pin holding it in place.

• The hub should not have noticeable movement when rocked back and forth.

7. Clean the lip seal on the bearing cap and replace using Loctite

242.

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As Needed

Check Battery

Check battery as needed. Keep battery clean and terminals free of corrosion.

To clean:

1. Turn battery disconnect switch, if equipped, to the off position.

2. Ensure that no ignition sources are near batteries.

3. Loosen and remove battery cable clamps carefully, negative (-) cable first.

4. Clean cable clamps and terminals to remove dull glaze.

5. Check for signs of internal corrosion in cables.

6. Apply MPG to terminals after cleaning to reduce corrosion.

7. Connect battery cable clamps, positive (+) cable first.

8. Tighten any loose connections.

9. Ensure that battery tiedowns are secure.

10. Turn battery disconnect switch to the on position.

Explosion possible. Serious injury or equipment damage could occur.

Follow directions carefully . To help avoid injury: Do not create sparks and do not short across battery terminals for

any reason.

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SK850 Operator’s Manual Service - 91

As Needed

Charge Battery

Explosion possible. Serious injury or equipment damage could occur.

Follow directions carefully.

To help avoid injury:

• Use a single 12V maximum source for charging. Do not connect to rapid chargers or dual batteries.

• Use caution and wear personal protective equipment such as safety eyewear, when charging or cleaning battery.

• Keep sparks, flames, and any ignition source away from batteries at all times. Internal contents are extremely hazardous. Leaking fluid is corrosive. Battery may be explosive at higher temperatures.

• NEVER lean over battery when making connections.

• Do not allow vehicles to touch when charging.

• Do not attempt to charge a battery that is leaking, bulging, heavily corroded, frozen, or otherwise damaged.

• NEVER short-circuit battery terminals for any reason or strike battery posts or cable terminals.

• Refer to MSDS for additional information regarding this battery.

Before You Start

Electronic components can be easily damaged by electrical surges. Jump starting can dam age electronics and electrical systems, and is not recommended. Try to charge the battery instead. Use quality large diameter jumper cables capable of carrying hig h currents ( 400 amps or more). Cheap ca bles may not allow enough current flow to charge a dead/discharged battery.

Read all steps thoroughly and review illustration before performing procedure.

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Service - 92 SK850 Operator’s Manual

As Needed

Charging Procedure (Engine Off)

1. Park service vehicle close to disabled equipment but do not allow vehicles to touch. Engage parking brake in both vehicles.

2. Turn the ignition switch to the OFF position in both vehicles, and turn of f all electrical loads. Disconnect the machine controller.

3. Inspect battery in disabled vehicle (B) for signs of cracking, bulging, leaking, or other damage. Connect red positive (+) jumper cable clamp to positive (+) post (2) o f batter y in disab led vehicle fir st.

IMPORTANT: Some equipment may have a positive jumper cable terminal (1) located externally. If so equipped, connect red positive (+) jumper cable clamp to terminal.

4. Connect the other red positive (+) jumper cable clamp to positive (+) post of battery (A) in the service vehicle.

5. Connect black negative (-) cable clamp to ne gative (-) post of battery (A) in service vehicle.

6. Connect the other black negative (-) cable clamp to the engine or frame ground on the disabled vehicle, at least 12” (305 mm) from the failed battery, as shown.

7. Operate service vehicle engine at 1500-2000 rpm for a few minutes to build an electrical charge in the failed battery.

8. Stop engine in service vehicle.

9. Remove jumper cables from the service vehicle, bla ck negative (-) clamp first. Do not allow clamps to touch.

10. Remove black negative (-) cable clamp from the disabled engine or frame ground first.

11. Remove red positive (+) cable clamp from the disabled vehicle positive (+) battery post last.

12. Reconnect machine controller and try to start disabled vehicle.

13. If th e disa b led veh icle did no t s tart, check for loose or corroded battery cable connections. Poor connections will prevent current from charging the failed battery. Clean terminals and posts if necessary and repeat steps above.

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As Needed

TR50

Check Digging Chain Rollers, Sidebars, Pins, and Bushings

Perform periodic visual inspections of digging chain. Check for wear on rollers (1) and sidebars (2). Check pins and bushing wear by measuring distance (3) between chain pins and comparing it to new chain.

NOTICE:

• If sidebars are bending or getting loose on chain pins, use chain spacers to join sidebars.

• Replace worn or broken chains.

• Replace sprockets when new chain is installed.

Check Digging Chain Teeth and Bits

Inspect digging chain teeth for wear as needed. Replace worn teeth with new Ditch Witch teeth. Each unit is equipped with a standard tooth configuration. When replacing teeth, maintain original tooth pattern. Depending on soil conditions and type of chain, a different configu ration might produce better results. Contact your authorized Ditch Witch dealer for more information about digging teeth patterns.

Alligator chain bits, like teeth, wear out. When tungsten cap or insert is gone, bit will wear quickly . Replace it before bit adapter is damaged.

Check Trencher Headshaft Sprocket Bolts

Check tightness of headshaft sprocket bolts as needed. Tighten lubricated bolts to 85 ft•lb (115 N•m)

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Service - 94 SK850 Operator’s Manual

As Needed

Replace Digging Chain

Visually check digging chains for wear on rollers and sidebars (2). Check pins (3) and bushing wear by measuring distance between chain pins and comparing it with a new chain. Also check digging

teeth (1).

NOTICE: Replace spr ockets when a new ch ain is installed.

To remove chain:

1. Fasten and adjust seat belt.

2. Start unit. See page 50 for proper start-up procedures.

3. Move attachment direction/speed control until digging chain connector pin is on top of boom.

4. Lower boom to ground.

5. Engage parking brake.

6. Turn ignition switch to STOP.

7. Roller booms: Secure chain by clamping links on either side of connector pin with chain jaws (shown). Squeeze jaws to reduce pressure on connector pin.

Sprocket booms: Lock rear idler sprocket.

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SK850 Operator’s Manual Service - 95

As Needed

To install digging chain:

1. Position digging chain on ground with teeth down and pointed toward unit.

2. Loop cable through end links.

3. Start engine.

4. Back unit up until digging chain extends past headshaft about 12” (30 cm).

5. Lower boom to horizontal position.

6. Stop engine.

7. Secure chain on sprocket booms by locking rear idler sprocket.

8. Pull rear end of chain over tail sprocket or roller. Pull cable until chain is in place on boom.

9. Attach chain jaws to end links and bring links into place.

10. Install connector pin and lock key.

11. Loop cable through links nearest connector pin.

Fluid pressure could pierce skin and cause injury

or death. Stay away.

To help avoid injury:

• Service digging boom grease cylinder only while standing on opposite side of boom.

• Wear gloves and safety glasses, and cover fi tting with cloth when relieving pressure in cylinder.

12. Loosen plug on grease cylinder or turn tension bolts counterclockwise to relieve chain tension.

13. Stand clear of chain and remove lock key from connector pin. Drive connector pin out of link.

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Service - 96 SK850 Operator’s Manual

As Needed

Crushing weight could cause death or serious

injury. Use proper procedures and equipment or stay away.

14. Unclamp links. Slowly release cable and lower chain to ground.

15. Lay chain on ground with teeth down.

To install chain:

1. Lay chain on ground with teeth down and pointed toward unit. Loop cable through end links.

2. Fasten and adjust seatbelt.

3. Start tractor. See page 72 for start-up procedures.

4. Disengage parking brake.

5. Move ground drive control to reverse.

6. Back unit up until chain extends past head shaft about 1’ (305 mm).

7. Move ground drive control to neutral.

8. Lower backfill blade to ground.

9. Lower boom to horizontal position.

10. Engage parking brake.

11. Turn ignition switch to STOP.

12. Pull rear end of chain over tail roller or sprocket.

13. Pu ll until ch ain is in place on bo om .

14. Move chain down boom until chain connector pin and lock key can be installed. Install connector pin and lock key.

15. Tighten chain by pumping EPG into grease cylinder.

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SK850 Operator’s Manual Specifications - 97

SK850 Basic Unit

Specifications

SK850 Basic Unit

Dimensions U.S. Metric

H2 Hinge pin height, max 83 in 2108 mm

Operating height, max, standard bucket 105 in 2667 mm H Overall height of machine 57 in 1450 mm L Overall length of loader, no attachment 86 in 2190 mm

Overall length of machine, with standard bucket 105 in 2670 mm L2 Wheelbase/track length 43 in 1092 mm A2 Angle of departure 27° 27°

Ground clearance, min (center/side) 8.9 in / 3.7 in 170 mm /

124 mm

W Track width, max 42 in 1065 mm

Track width, min 36 in 914 mm

Unit width, excluding tracks 35 in 890 mm

Dump height, max, with standard bucket 66 in 1676 mm

Reach, standard bucket at max dump height 17 in 430 mm

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Specifications - 98 SK850 Operator’s Manual

SK850 Basic Unit

Dimensions U.S. Metric

Bucket rollback angle, ground level 25° 25°

Bucket rollback angle, full height 90° 90°

Dump angle, standard bucket at max dump height 35° 35°

Bucket width, max 44 in 1120 mm

Bucket width, min 36 in 915 mm

Swing radius, max, with standard bucket 65 in 1650 mm

Swing radius, no attachment 44 in 1120 mm

Rear overhang, max 29 in 735 mm

Performance U.S. Metric

Ground drive speed, forward and reverse 4.7 mph 7.6 km/h Ground pressure, 7” (180 mm) tracks * 5.5 psi 0.38 bar Ground pressure, 9” (230 mm) tracks * 4.5 psi 0.31 bar Tipping capacity

The rated operating capacity for this machine was determined using a standard bucket in the drive position with center of gravity 7 in (18 cm) from the mounting plate. Depending on the attachment, the actual operating capacity of the attachment may vary.

2465 lb 1118 kg

Operating capacity (35% of tipping capacity) 860 lb 390 kg Machine weight (fluids full) 3100 lb 1406 kg

* Includes machine weight, 175-lb (80-kg) bucket, 165-lb (75-kg) operator

Battery

SAE reserve capacity 11 0 min, SAE cold crank @ 0°F (-18°C) 800 amp, 12V electrical system

Fluid Capacities U.S. Metric

Fuel tank 10.5 gal 40 L Engine oil, with filter 5.0 qt 4.7 L Hydraulic reservoir 9.2 gal 35 L Coolant capacity 1.28 gal 4.8 L

Specifications are called out according to SAE recommended practices. Specifications are general and subject to change without notice. If exact measurements are required, equipment should be weighed and measured. Due to selected options, delivered equipment may not necessarily match that shown.

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SK850 Operator’s Manual Specifications - 99

SK850 Power Specifications

Power U.S. Metric

Engine: Yanmar Number of cylinders 3

3TNV88C, diesel, EPA Tier 4 Final, EU Stage IIIA

Displacement

100.1 in

1.64 L

Bore 3.46 in 88 mm Stroke 3.54 in 90 mm Manufacturer’s gross power rating (per SAE J1955) 36.9 hp 27.5 kW Estimated net power rating (per SAE 1348) 35.1 hp 26.2 kW Rated engine speed 3000 rpm 3000 rpm

Hydraulic System U.S. Metric

Auxiliary: double gear pump Flow rate (pump 1) 8.8 gpm 33 L/min Flow rate (pump 2) 5.1 gpm 20 L/min Pressure 3625 psi 250 bar Ground drive: dual hydrostat Flow rate 15 gpm 56.8 L/min Pressure 3625 psi 250 bar

Noise Levels

Operator 91 dBA sound pressure per ISO 6394 Exterior 104 dBA sound power per ISO 6393

Vibration Level

Average vibration transmitted to the operator’s hand during normal operation with a loader bucket is

4.31 m/sec bucket is 1.07 m/sec

Average vibration transmitted to the whole body during normal operation with a loader

. Actual vibration will depend upon the attachment being used.

CMW

Ditch Witch SK850 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Overview

Serial Number Location

Intended Use

Equipment Modification

Unit Components

Operator Orientation

About This Manual

Bulleted Lists

Numbered Lists

Foreword

Content s

Safety

Guidelines

Emergency Procedures

Electric Strike Description

If an Electric Line is Damaged

If a Gas Line is Damaged

If a Fiber Optic Cable is Damaged

If Machine Catches on Fire

Safety Alert Classifications

Machine Safety Alerts

Attachment Safety Alerts

TR50

Controls

Gauges and Indicators

Graphic Display

Service Interval Screen

Controls

Engine Compartment

Tool Carrier

Prep are

Gather Information

Inspect Site

Identify Hazards

Classify Jobsite

Inspect Jobsite

Select a Classification

Apply Precautions

Check Supplies and Prepare Equipment

Supplies

Fluid Levels

Condition and Function

Accessories

Connect Attachment

Attachment

Hydraulic Hoses

Drive

Start Unit

Drive

General Operation

Safe Slope Operation

Shut Down

Transport

Lift

Points

Procedure

Haul

Load

Tie Down

Unload

Prepare Unit for Towing

Return Unit to Normal Operation

Trench

Setup

Complete the Job

Rinse Equipment

Disconnect Attachment

Stow Tools

Service

Precautions

Working under Raised Lift Arms

Welding Precaution

Overview

Recommended Lubricants/Service Key

Engine Oil Temperature Chart

Approved Coolants