JT100/JT100 All Terrain Operator’s ManualOverview - 3
Intended Use
Intended Use
The JT100/JT100 All Terrain is a self-contained horizontal directional drilling unit capable of drilling and
backreaming through solid rock, cobblestone, broken rock, gravel, and other soil/rock mixes, as well as
less extreme soil conditions. It is designed to install buried cable and pipe at distances to 2,000’ (610 m)
depending on soil conditions and is intended for operation in ambient temperatures from 0° to 115°F (-18°
to 46°C). Use in any other way is considered contrary to the intended use.
The unit can be used with Ditch Witch drilling fluid units and Ditch Witch
operated, serviced, and repaired only by persons familiar with its particular characteristics and acquainted
with the relevant safety procedures.
®
tracking equipment. It should be
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.
JT100/JT100 All Terrain Operator’s ManualOverview - 5
About This 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.
“Continued” Indicators
indicates that a procedure is continued on the next page.
JT100/JT100 All Terrain Operator’s ManualForeword - 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 equipment 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 published. For the latest information on Ditch Witch equipment, see your
Ditch Witch dealer.
®
equipment.
Thank you for buying and using Ditch Witch equipment.
JT100/JT100 All Terrain Operator’s ManualContents - 9
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 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
Operation Overview
an overview for completing a job with this machine: planning, setting up, installing
product, and restoring the jobsite; with cross references to detailed procedures
Prepare
procedures for inspecting and classifying the jobsite, planning the installation path,
and preparing the jobsite for work
Drive
procedures for startup, cold start, driving, and shutdown
1
7
11
27
71
75
101
Transport
procedures for lifting, hauling, and towing
Conduct a Bore
procedures for drilling and backreaming
Systems and Equipment
downhole tools and drill pipe, anchor, electric strike, tracker control, and fluid
systems
Complete the Job
procedures for backfilling and 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
Safety - 12JT100/JT100 All Terrain Operator’s Manual
Guidelines
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 path with white paint prior to contacting One-Call or
utilities.
•Classify jobsite based on its hazards and use correct tools and machinery, 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
•Replace missing or damaged safety shields and safety signs.
•Use equipment carefully. Stop operation and investigate anything that does not look or feel right.
®
dealer.
•Do not operate unit where flammable gas may be present.
•Contact your Ditch Witch dealer if you have any question about operation, maintenance, or equipment
use.
•Complete the equipment checklist located at www.ditchwitch.com/resources/safety.
Safety - 14JT100/JT100 All Terrain Operator’s Manual
Emergency Procedures
If an Electric Line is Damaged
If you suspect an electric line has been damaged and you are on drilling unit or bonded equipment, DO
NOT MOVE. Remain on drilling machine and take the following actions. The order and degree of action will
depend on the situation.
•Warn people nearby that an electric strike has occurred.
•Have someone contact electric company.
•Reverse drilling direction and try to break contact. Do not touch drill pipe with hands or hand-held
tools.
•Press electric strike system self test button.
•If alarm sounds again, stay where you are and wait for electric company to shut off power.
•If alarm does not sound and there is no other indication of a strike, wait at least one full minute
before moving away from equipment. Utility might use automatic reclosers which will restart
current flow. If alarm sounds again while waiting, stay where you are until electric company shuts
off power.
•If alarm does not sound but all lights in strike indicator are on, assume strike is continuing and stay
where you are until electric company shuts off power.
•Do not resume drilling or allow anyone into area until given permission by electric company.
If you suspect an electric line has been damaged and you are off drilling unit or bonded equipment, DO
NOT TOUCH ANY EQUIPMENT connected to drilling unit. Take the following actions. The order and
degree of action will depend on the situation.
•Stay where you are unless you are wearing electric insulating boots. If you leave, do not return to area
or allow anyone into area until given permission by electric company.
JT100/JT100 All Terrrain Operator’s ManualSafety - 17
Driver/Loader Precautions
Driver/Loader Precautions
Intended Use
The driver/loader is to be used for driving anchors and loading and unloading pipe boxes only. Use in any
other way is considered contrary to the intended use.
Preparation
Visually inspect driver/loader each day to determine that it is in good condition before it is used. Check the
following:
•Make sure driver/loader is free of excess oil, grease, mud and debris before operation.
•Test driver/loader at the beginning of each shift to determine that the operating systems are in good
working order.
•Check safety devices to ensure they are functioning and in place.
•Check boom, hoses and connecting pins for wear and damage.
Transportation
•Always store auxiliary stabilizer before moving unit.
•Always store driver/loader properly for transportation.
•Never drive with load suspended from driver/loader.
Jobsite Setup
•Always use unit stabilizers during driver/loader operation. Ensure that they are firmly positioned on
solid footings.
•Always install auxiliary stabilizer for driver/loader operation on engine side of unit.
•If auxiliary stabilizer rests on curb or other object that prevents it from supporting load, consider
blocking under the arm of the auxiliary stabilizer as near the outer end as possible to support load.
•If auxiliary stabilizer does not rest on ground due to holes or grades, it must be blocked up to provide
level and firm support for the unit.
•When working in soft soil conditions, use wide pad under auxiliary stabilizer foot to prevent sinking.
•Ensure loads are securely attached before lifting.
Safety - 18JT100/JT100 All Terrrain Operator’s Manual
Driver/Loader Precautions
Operation
General
Riding on boom or load will result in death or serious
injury. No riders. Keep off.
•Never place chain link on tip of hook to lift load.
•Close hook throat before lifting load.
•Never use a sling bar or anything larger than the hook throat that could prevent hook latch from
closing. This prevents damage to material being hoisted and helps prevent injury to personnel.
•No unqualified or unauthorized person shall be allowed to operate the loader/driver.
•Always comply with load chart capacities. Weight of heavy load can create enough tipping momentum
to overturn drilling unit.
•Observe operating area obstructions or power lines that might be a hazard.
•Keep objects and personnel clear of driver/loader path during operation.
•Do not take your eyes off a moving load. Always look in the direction load is moving.
JT100/JT100 All Terrrain Operator’s ManualSafety - 19
Driver/Loader Precautions
•Never swing a load over people.
•Consider overall height of unit when moving under objects with low overhead clearance.
•Operate controls smoothly and do not stop load sharply in midair so that it swings.
•Fluid pressure from broken hydraulic line could pierce skin and cause injury or death. Stay away.
•Keep loader/driver boom length as short as possible for maximum lifting capacity and safety. Longer
booms require additional care in accelerating and decelerating the swing motion and thus slow down
the working cycle and reduce production.
•Never use loader/driver for towing or pulling a load sideways. Keep load directly under boom point at
all times. Boom can fail far below its rated capacity if the driver/loader is side loaded.
•Always walk around unit and check for obstructions before moving load.
•Do not lift personnel with driver/loader.
•Know weight of rigging and load to avoid overloading driver/loader.
•Heavy loads can create enough tipping movement to overturn vehicle. Always install auxiliary stabilizer
when lifting on the engine side of unit.
•Except for anchoring drilling unit, do not apply down force with boom extensions, lift, or outer boom
function.
Driver/Loader Overload
If driver/loader becomes overloaded, driver/
loader components will not move in some
directions (see illustration) until overload
condition is overcome.
Safety - 20JT100/JT100 All Terrrain Operator’s Manual
Driver/Loader Precautions
Near Electrical Power Lines
Do not get boom near power lines. Death or serious
injury will occur. Keep required distance between boom and power lines.
Use a spotter.
Never operate the driver/loader within 10’ (3 m) of electric power lines carrying up to 50 kV. Add 1’ (305
mm) of clearance for each additional 30 kV or less (see table on left). Follow OSHA or other guidelines for
working around power lines. Also observe minimum clearance requirements during transport (see table on
right).
Normal voltage
(phase to phase)
up to 50 kV10’3 m
51-200 kV15’4.6 m
201-350 kV20’6 m
351-500 kV25’7.6 m
501-750 kV35’10.7 m
751-1000 kV45’13.7 m
Do not enter the danger zone (A), unless one of the
following conditions is met:
•An appointed person has confirmed that the electrical
distribution and transmission lines have been deenergized and visibly grounded at the point of work.
•Insulating barriers (not a part of the attachment or
driver/loader) have been erected to prevent physical
contact with the lines.
Minimum operating
clearance required
Normal voltage
(phase to phase)
up to 0.75 kV4’1.2 m
0.76-200 kV6’1.8 m
50-345 kV10’3.8 m
346-750 kV16’4.9 m
751-1000 kV20’6.1 m
unknown20’6.1 m
Minimum transporting
clearance required
Maintenance
•Before working on the driver/loader, lower boom to
the ground, turn driver/loader controls off and relieve
hydraulic pressure from circuits.
•Never weld, modify, or use unauthorized components
on driver/loader attachment. This will void any
warranty or liability, and driver/loader failure could result.
•Check hook before each use for distortions or cracks.
•Stop all operations when cleaning, adjusting or lubricating the machine.
•Install all guards before returning driver/loader to service.
JT100/JT100 All Terrrain Operator’s ManualSafety - 21
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. 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 moderate 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.
Safety - 26JT100/JT100 All Terrrain Operator’s Manual
Attachment Safety Alerts
Do not get boom near power lines. Death or
4
5
serious injury will occur. Keep required distance between boom
and power lines. Use a spotter.
Auxiliary stabilizer must be properly installed with
contact on firm surface before operating pipebox loader on the
engine side of the unit. Working loads should be limited to those
shown.
JT100/JT100 All Terrain Operator’s ManualControls - 29
Setup Console
ItemDescriptionNotes
2. Remote engine stop
switch
3. Auxiliary light switchTo turn on, press
4. Left rear stabilizer
control
To stop engine, press.
To restart engine, turn ignition
off and then back to start.
To turn off, press
To lower, push.
To raise, pull.
IMPORTANT:
•If this switch is used to stop
drilling unit, be sure to turn
ignition switch off if machine will
be left unattended for long
periods of time. Battery discharge
can occur.
•If wrenches are engaged when
remote stop is pressed, wrenches
will remain engaged but could
gradually open.
Lower both rear stabilizers to the
ground together and then adjust
individually.
5. Right rear stabilizer
control
To lower, push.
To raise, pull.
Lower both rear stabilizers to the
ground together and then adjust
individually.
Controls - 30JT100/JT100 All Terrain Operator’s Manual
Setup Console
ItemDescriptionNotes
6. Left front stabilizer
control
7. Right front stabilizer
control
8. Auxiliary hydraulic
pressure gauge
To lower, push.
To raise, pull.
To lower, push.
To raise, pull.
Displays hydraulic fluid
pressure to any hydraulic
function in use, including front
and rear stabilizers, optional
pipeloader, stationary and
rotating wrenches, and
optional driver/loader
attachment.
Lower both front stabilizers to the
ground together and then adjust
individually.
Lower both front stabilizers to the
ground together and then adjust
individually.
9. Levels Indicates that drilling unit is
level if bubble rests between
the lines as shown.
Use stabilizer controls to set
machine as level as possible,
both front to back and side to
side.
JT100/JT100 All Terrain Operator’s ManualControls - 51
Right Control Console
Gauges and Indicators
1. Drilling fluid pressure gauge
2. Thrust pressure gauge
ItemDescriptionNotes
1. Drilling fluid pressure
gauge
2. Thrust pressure gaugeDisplays hydraulic fluid
Displays discharge pressure
of drilling fluid pump.
pressure to thrust motor
during thrust and pullback.
3. Rotation pressure gauge
4. Engine display
IMPORTANT: Monitor this gauge and
drilling fluid flowmeter carefully to see
if values are rising or falling at the
same time. If they are not, nozzle
might be plugged.
Controls - 54JT100/JT100 All Terrain Operator’s Manual
Right Control Console
ItemDescriptionNotes
2. Diagnostic light (red)If system is OK, light is off.
If controller is not getting
power, light is on.
If a non-essential diagnostic
code is recorded, light flashes
on and off for 10 seconds.
If an essential diagnostic
code is recorded, light
continually flashes on for
three seconds and off for half
a second.
See “Diagnostic Codes” on page 173.
3. Shuttle home status
light
4. Rear home status lightIf carriage is at rear of drill
5. Front home status lightIf carriage is at front of drill
If shuttle is retracted, light is
on.
If shuttle is extended, light is
off.
frame, light is on.
If carriage is away from rear
of drill frame, light is off.
frame, light is on.
If carriage is away from front
of drill frame, light is off.
IMPORTANT: This light indicates the
shuttle is under the pipe box and out
of the path of the carriage. It does not
mean the shuttle is under the correct
pipe row.
Controls - 58JT100/JT100 All Terrain Operator’s Manual
Right Control Console
ItemDescriptionNotes
5. Shutdown override
switch
Temporarily override
engine shutdown, press
and hold
c00ic056t.eps
6. Ignition switchTo start engine, insert key and
turn clockwise.
To stop engine, turn key
counterclockwise.
7. Remote engine stop
To stop engine, press.
switch
To restart engine, turn ignition
off and then back to start.
IMPORTANT: Restart engine with
ignition switch after it has been turned
off with remote engine stop switch.
IMPORTANT: If this switch is used to
stop drilling unit, be sure to turn
ignition switch off if machine will be
left unattended for long periods of
time. Battery discharge can occur.
NOTICE: The ESID does not indicate
proximity to electric lines. System will
activate only when voltage and/or
amperage detected at the drilling unit
are above threshold minimum limits.
JT100/JT100 All Terrain Operator’s ManualControls - 69
ESID
ItemDescriptionNotes
3. Alarm interrupt buttonTo turn off strike alarm at
Operation Overview - 74JT100/JT100 All Terrain Operator’s Manual
Backreaming
Backreaming
1. Assemble backream string. See page 128.
2. Start drilling unit and adjust throttle.
3. Set drilling fluid flow. Check that fluid flows through all nozzles. See page 160.
4. Remove pipe from bore. See page 130.
5. Remove full pipe box and add empty box (see page 139) to complete backream.
6. Remove pullback device. See page 132.
Backreaming Tips
•Plan backreaming job before drilling. Plan bore path as straight as possible. Check bend limits of
pullback material. Check that appropriate pullback devices are on hand.
•Keep all bends as gradual as possible.
•Drilling fluid quality is a key factor in backreaming success. Contact your Ditch Witch® dealer for
information on testing water, selecting additives, and mixing drilling fluid.
•Backreaming requires more fluid than drilling. Make sure enough fluid is used.
Leaving Jobsite
1. Remove anchors. See page 135.
2. Rinse unit and downhole tools. See page 181.
3. Disassemble strike system (see page 146) and disconnect from fluid system (see page 183).
4. Stow tools. See page 183.
5. Load unit onto trailer. See page 107.
Storing Equipment
1. For cold weather storage, antifreeze drilling unit. See page 180.
2. For long-term storage, disconnect battery disconnect switch.
JT100/JT100 All Terrain Operator’s ManualPrepare - 77
Gather Information
Gather Information
A successful job begins before the bore. The first step in planning is reviewing information already
available about the job and jobsite.
Review Job Plan
Review blueprints or other plans and make sure you have taken bore enlargement during backreaming
and pullback into account. Check for information about existing or planned structures, elevations, or
proposed work that may be taking place at the same time.
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.
Examine Pullback Material
Ask for a sample of the material you will be pulling back. Check its weight and stiffness. Contact the
manufacturer for bend radius information. Check that you have appropriate pullback devices.
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.
Prepare - 80JT100/JT100 All Terrain Operator’s Manual
Classify Jobsite
Classify Jobsite
Inspect Jobsite
•Follow U.S. Department of Labor regulations on excavating and trenching (Part 1926, Subpart P) and
other similar regulations.
•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.
•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
•Have an experienced locating equipment operator sweep area within 20’ (6 m) to each side of bore
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 lineelectric
within 10’ (3 m) of a natural gas linenatural gas
in sand or granite which is capable of producing crystalline silica
(quartz) dust
within 10’ (3 m) of any other hazardother
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 jobsite before working.
JT100/JT100 All Terrain Operator’s ManualPrepare - 81
Classify Jobsite
Apply Precautions
Once classified, precautions appropriate for jobsite must be taken.
Electric Jobsite Precautions
Electric shock will cause death or serious injury. Stay
away.
In addition to using a directional drilling system with an electric strike system, use one or both of these
methods.
•Expose line by careful hand digging or soft excavation. Use beacon to track bore path. Have someone
observe clearance between drill head and backreamer when crossing a line.
•Have service shut down while work is in progress. Have electric company test lines before returning
them to service.
Natural Gas Jobsite Precautions
Fire or explosion possible. Fumes could ignite and cause
burns. No smoking, no flame, no spark.
In addition to using a directional drilling system and positioning equipment upwind from gas lines, use one
or both of these methods.
•Expose lines by careful hand digging or soft excavation. Use beacon to track bore path. Have
someone observe clearance between drill head and backreamer when crossing a line.
•Have gas shut off while work is in progress. Have gas company test lines before returning them to
service.
Prepare - 82JT100/JT100 All Terrain Operator’s Manual
Classify Jobsite
Crystalline Silica (Quartz) Dust Precautions
Use breathing protection when exposed to silica dust.
Follow OSHA or other guidelines for exposure to crystalline silica when trenching, sawing or drilling
through material that might produce dust containing crystalline silica (quartz).
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.
JT100/JT100 All Terrain Operator’s ManualPrepare - 83
Plan Bore Path
Plan Bore Path
Plan the bore path, from entry to end, before drilling begins. The Ditch Witch® Trac Management System
Plus is available for planning your bore path. This special software can be run in the field using a laptop
computer equipped with Windows® 95 or higher operating system. See your Ditch Witch dealer for details.
If not using Trac Management System Plus, mark the bore path on the ground with spray paint or flags, or
record it on paper for operator reference.
For complicated bores, consult an engineer. Have the jobsite surveyed and bore path calculated. Be sure
the engineer knows minimum entry pitch, bend limits of drill pipe, bend and tension limits of pullback
material, pipe lengths, and location of all underground utilities.
For less complicated bores, plan the bore based on four measurements:
•recommended bend limit
•entry pitch
•minimum setback
•minimum depth
IMPORTANT: See the following pages for more information about these measurements. If not using
Trac Management System Plus, see “Bore Path Calculator - Power Pipe®” on page 91 and use these
measurements to help plan your bore.
Prepare - 84JT100/JT100 All Terrain Operator’s Manual
Plan Bore Path
Recommended Bend Limits
Ditch Witch drill pipes are designed to bend slightly during operation. Slight bending allows for steering and
correcting direction. Bending beyond recommended limits will cause damage that might not be visible. This
damage adds up and will later lead to sudden drill pipe failure.
IMPORTANT: Consider recommended bend limits during any bend, not just during bore entry.
Pipe Pitch
Ditch Witch® drill pipe is tested to bend at a maximum
percent pitch.
•For JT100 Power Pipe® drill pipe, make sure pitch
(A) changes no more than 7% over the full length
of each pipe.
•For JT100 Power Pipe Forged drill pipe, make
sure pitch (A) changes no more than 7.6% over
the full length of each pipe.
•For JT100 All Terrain drill pipe, make sure pitch
(A) changes no more than 7% over the full length
of each pipe.
NOTICE: Bending drill pipe more sharply than recommended will damage pipe and cause failure
over time. Changes in pitch must be equally distributed over the length of a pipe. Maximum
changes in pitch within 1-2’ (300-600 mm) of pipe create sharp bends that will damage pipe.
Monitor the pitch of each pipe with the remote display on the operator’s console. See tracker manual.
Prepare - 86JT100/JT100 All Terrain Operator’s Manual
Plan Bore Path
Pipe-By-Pipe Bend Limits - Power Pipe
Pipe
(C)
114 ft 9 in (4.5 m)0 ft 6 in (0.2 m)12155 ft 11 in (47.5 m)71 ft 11 in (21.9 m)
229 ft 5 in (9.0 m)2 ft 1 in (0.6 m)13165 ft 1 in (50.3 m)83 ft 6 in (25.4 m)
343 ft 11 in (13.4 m)4 ft 9 in (1.5 m)14173 ft 5 in (52.9 m)95 ft 8 in (29.2 m)
458 ft 3 in (17.8 m)8 ft 5 in (2.6 m)15180 ft 10 in (55.1 m)108 ft 5 in (33.1 m)
572 ft 3 in (22 m)13 ft 2 in (4.0 m)16187 ft 4 in (57.1 m)121 ft 8 in (37.1 m)
685 ft 10 in (26.2 m)18 ft 10 in (5.7 m)17192 ft 10 in (58.8 in)135 ft 5 in (41.3 m)
799 ft 0 in (30.2 m)25 ft 6 in (7.8 m)18197 ft 4 in (60.1 m)149 ft 5 in (45.6 m)
8111 ft 8 in (34 m)33 ft 1 in (10.1 m)19200 ft 10 in (61.2 m)163 ft 9 in (49.9 m)
9123 ft 9 in (37.7 m)41 ft 7 in (12.7 m)20203 ft 3 in (62.0 m)178 ft 4 in (54.4 m)
10135 ft 2 in (41.2 m)50 ft 11 in (15.5 m)21204 ft 8 in (62.4 m)193 ft 0 in (58.8 m)
11145 ft 11 in (44.5 m) 61 ft 0 in (18.6 m)22205 ft 0 in (62.5 m)205 ft 0 in (62.5 m)
JT100/JT100 All Terrain Operator’s ManualPrepare - 87
Plan Bore Path
Pipe-By-Pipe Bend Limits - Power Pipe® Forged
Pipe
(C)
10 ft 7 in (0.2 m)14 ft 12 in (4.6 m)1276 ft 8 in (23.4 m)155 ft 12 in (47.5 m)
22 ft 3 in (0.7 m)29 ft 11 in (9.1 m)1388 ft 11 in (27.1 m)164 ft 8 in (50.2 m)
35 ft 1 in (1.6 m)44 ft 7 in (13.6 m)14101 ft 9 in (31 m)172 ft 5 in (52.6 m)
49 ft 1 in (2.8 m)59 ft 1 in (18 m)15115 ft 1 in (35.1 m)179 ft 2 in (54.6 m)
514 ft 1 in (4.3 m)73 ft 2 in (22.3 m)16128 ft 12 in (39.3 m)184 ft 11 in (56.4 m)
620 ft 2 in (6.2 m)86 ft 11 in (26.5 m)17143 ft 3 in (43.7 m)189 ft 6 in (57.8 m)
727 ft 4 in (8.3 m)100 ft 1 in (30.5 m)18157 ft 10 in (48.1 m)193 ft 1 in (58.8 m)
835 ft 5 in (10.8 m)112 ft 9 in (34.4 m)19172 ft 7 in (52.6 m)195 ft 6 in (59.6 m)
944 ft 6 in (13.6 m)124 ft 8 in (38 m)20187 ft 7 in (57.2 m)196 ft 9 in (59.9 m)
1054 ft 8 in (16.6 m)135 ft 11 in (41.4 m)21197 ft 0 in (60 m)197 ft 0 in (60 m)
1165 ft 2 in (19.9 m)146 ft 4.5 in (44.6 m)
Prepare - 88JT100/JT100 All Terrain Operator’s Manual
Plan Bore Path
Pipe-By-Pipe Bend Limits - All Terrain Pipe
Pipe
(C)
114 ft 1 in (4.3 m)0 ft 6 in (0.1 m)13160 ft 0 in (48.8 m)76 ft 11 in (23.4 m)
228 ft 2 in (8.6 m)1 ft 11 in (0.6 m)14168 ft 6 in (51.4 m)88 ft 2 in (26.9 m)
342 ft 1 in (12.8 m)4 ft 4 in (1.3 m)15176 ft 1 in (53.7 m)100 ft 1 in (30.5 m)
455 ft 9 in (17.0 m)7 ft 9 in (2.4 m)16182 ft 11 in (55.8 m)112 ft 6 in (34.3 m)
569 ft 3 in (21.1 m)12 ft 1 in (3.7 m)17188 ft 10 in (57.6 m)125 ft 3 in (38.2 m)
682 ft 4 in (25.1 m)17 ft 3 in (5.3 m)18193 ft 11 in (59.1 in)138 ft 6 in (42.2 m)
795 ft 1 in (29 m)23 ft 5 in (7.1 m)19198 ft 0 in (60.4 m)152 ft 0 in (46.3 m)
8107 ft 4 in (32.7 m)30 ft 4 in (9.3 m)20201 ft 2 in (61.3 m)165 ft 9 in (50.5 m)
9119 ft 2 in (36.3 m)38 ft 2 in (11.6 m)21203 ft 5 in (62.0 m)179 ft 8 in (54.8 m)
10130 ft 4 in (39.7 m)46 ft 9 in (14.3 m)22204 ft 8 in (64.5 m)193 ft 9 in (59.1 m)
11140 ft 11 in (43 m)56 ft 1 in (17.1 m)23205 ft 0 in (62.5 m)205 ft 0 in (62.5 m)
12150 ft 10 in (46 m)66 ft 2 in (20.2 m)
JT100/JT100 All Terrain Operator’s ManualPrepare - 89
Plan Bore Path
Entry Pitch
Entry pitch is the slope of the drill frame compared with the slope of the ground. Determine entry pitch one
of two ways:
1. With Pitch Beacon
•Lay pitch beacon on the ground and read
pitch.
•Lay pitch beacon on drill frame and read pitch.
•Subtract ground pitch from drilling unit pitch.
2. With Measurements
•Measure from the ground to front end of drill
frame (H1).
•Measure from the ground to back end of frame
(H2).
•Subtract (H1) from (H2). Record this number.
•Measure the distance between front and back
points (C).
•Divide (H2-H1) by (C), then multiply by 100.
This is your pitch.
IMPORTANT: A shallow entry pitch (A1) allows you
to reach horizontal sooner and with less bending.
Increasing entry pitch (A2) makes bore path longer
and deeper.
Prepare - 90JT100/JT100 All Terrain Operator’s Manual
Plan Bore Path
Minimum Setback
Setback is the distance from the entry point to where
pipe becomes horizontal (B1).
NOTICE: If setback is too small (B2), you will
exceed bend limits and damage the pipe.
Minimum Depth
Because you must bend pipe gradually, entry pitch and
bend limits determine how deep the pipe will be when
it becomes horizontal. This is called the minimum depth.
JT100/JT100 All Terrain Operator’s ManualPrepare - 91
Plan Bore Path
Bore Path Calculator - Power Pipe®
Entry pitch, setback, and minimum depth work together with bend limits to determine the bore path. To find
the setback (B) and entry pitch (A) that will take you to the desired minimum depth (D), use the chart
below.
Minimum depth (D)Entry pitch (A)Setback (B)Depth to begin steering (S)
6 ft 10 in (2.08 m)11.3° / -20%54 ft 6 in (16.61 m)2 ft 10 in (0.86 m)
7 ft 11 in (2.41 m)12.4° / -22%58 ft 3 in (17.75 m)3 ft 2 in (0.97 m)
9 ft 1 in (2.77 m)13.5° / -24%62 ft 0 in (18.90 m)3 ft 5 in (1.04 m)
10 ft 3 in (3.12 m)14.6° / -26%65 ft 8 in (20.02 m)3 ft 8 in (1.12 m)
11 ft 6 in (3.51 m)15.6° / -28%69 ft 4 in (21.13 m)3 ft 11 in (1.19 m)
12 ft 10 in (3.91 m)16.7° / -30%72 ft 10 in (22.20 m)4 ft 2 in (1.27 m)
14 ft 2 in (4.32 m)17.7° / -32%76 ft 4 in (23.27 m)4 ft 5 in (1.35 m)
IMPORTANT: Numbers in table based on 205’ (62.5 m) minimum bend radius, and beacon housing,
EZ-Connect, transition sub, and half of first drill pipe (L, totaling 14’ 7” [4.45 m]) in the ground before
steering.
Prepare - 92JT100/JT100 All Terrain Operator’s Manual
Plan Bore Path
Bore Path Calculator - Power Pipe® Forged
Entry pitch, setback, and minimum depth work together with bend limits to determine the bore path. To find
the setback (B) and entry pitch (A) that will take you to the desired minimum depth (D), use the chart
below.
Minimum depth (D)Entry pitch (A)Setback (B)Depth to begin steering (S)
5 ft 3 in (1.52 m)10.0° / -18%46 ft 10 in (14.27 m)2 ft 3 in (0.69 m)
6 ft 0 in (1.83 m)10.8° / -19%49 ft 8 in (15.14 m)2 ft 5 in (0.74 m)
6 ft 8 in (2.03 m)11.7° / -21%52 ft 5 in (15.98 m)2 ft 8 in (0.81 m)
7 ft 6 in (2.29 m)12.5° / -22%55 ft 2 in (16.81 m)2 ft 10 in (0.86 m)
8 ft 4 in (2.54 m)13.3° / -24%57 ft 11 in (11.65 m)3 ft 0 in (0.91 m)
9 ft 2 in (2.79 m)14.2° / -25%60 ft 8 in (18.49 m)3 ft 2 in (0.97 m)
10 ft 1 in (3.07 m)15° / -27%63 ft 5 in (19.33 m)3 ft 4 in (1.02 m)
IMPORTANT: Numbers in table based on 197’ (60 m) minimum bend radius, and beacon housing,
EZ-Connect, transition sub, and half of first drill pipe (L, totaling 14’ 8” [4.47 m]) in the ground before
steering.
JT100/JT100 All Terrain Operator’s ManualPrepare - 93
Plan Bore Path
Bore Path Calculator - All Terrain Pipe
Entry pitch, setback, and minimum depth work together with bend limits to determine the bore path. To find
the setback (B) and entry pitch (A) that will take you to the desired minimum depth (D), use the chart
below.
Minimum depth (D)Entry pitch (A)Setback (B)Depth to begin steering (S)
6 ft 7 in (2.01 m)11.3° / -20%53 ft 4 in (16.26 m)2 ft 7 in (0.79 m)
7 ft 8 in (2.34 m)12.4° / -22%57 ft 1 in (17.40 m)2 ft 10 in (0.86 m)
8 ft 9 in (2.67 m)13.5° / -24%60 ft 10 in (18.54 m)3 ft 1 in (0.94 m)
10 ft 0 in (3.05 m)14.6° / -26%64 ft 6 in (19.66 m)3 ft 4 in (1.02 m)
11 ft 2 in (3.40 m)15.6° / -28%68 ft 2 in (20.78 m)3 ft 7 in (1.09 m)
12 ft 6 in (3.81 m)16.7° / -30%71 ft 9 in (21.87 m)3 ft 10 in (1.17 m)
13 ft 10 in (4.22 m)17.7° / -32%75 ft 3 in (22.94 m)4 ft 1 in (1.24 m)
IMPORTANT: Numbers in table based on 205’ (62.5 m) minimum bend radius, Rockmaster™
housing, 6.25-in bit, and half of first drill pipe (L, totaling 13.5’ [4.1 m]) in the ground before steering.
JT100/JT100 All Terrain Operator’s ManualPrepare - 95
Check Supplies and Prepare Equipment
Check Supplies and Prepare Equipment
Check Supplies
•receiver/transmitter or tracker with spare batteries
•beacons with new and spare batteries
•two-way radios with new and spare batteries
•hydraulic wrench (see “Hydratong Wrenches” on page 165)
•transition sub
•anchoring equipment and accessories
•bits, screens, nozzles (see “Downhole Tools” on page 160)
•adapters, pipe, beacon housings
•marking flags or paint
•water and additional hoses
•fuel
•drilling fluid additives (see “Drilling Fluid” on page 152)
•spare fuses
•keys
•backreamers, swivels, pulling devices (see “Backreamers” on page 162)
•wash down hose and spray gun
•duct tape
•spray lubricant
•tool joint compound (see “Recommended Lubricants/Service Key” on page 188)
•electrically insulating boots and gloves. Boots must have high tops and meet the electric hazard
protection requirements of ASTM F2413 when tested at 14,000 volts. Tuck legs of pants completely
inside boots.
•personal protective equipment, such as hard hat and safety glasses
JT100/JT100 All Terrain Operator’s ManualPrepare - 97
Check Supplies and Prepare Equipment
Select Drilling Mode
Three drilling setups are available with this unit:
•AT mode
•AT dirt mode
•JT mode
Select the best setup based on jobsite conditions.
ModeSituation usedDownhole toolsCapabilities
ATRock, soft rock, other non-compressible
soils. Any other situation with difficult
steering because of hard soil
conditions.
AT
dirt
JTSoft or intermittent soft rock or other
Once drilling mode has been selected, configure drilling unit to match mode.
When one bore out of several can be
better or more quickly done with
conventional downhole tools. This bore
is such that changing to JT pipe is not
practical.
JT100/JT100 All Terrain Operator’s ManualPrepare - 99
JT Mode
IMPORTANT: Use conversion kit (p/n 190-1548).
•Install saver sub, shuttle stop, roller, and roller pin for Mach 1 pipe.
•Use standard transition sub and beacon housing. Select soil bit based on jobsite conditions.
•Use auger type anchors.
•Load JT pipe and pipe box onto unit.
IMPORTANT: Do not put JT pipe into a large All Terrain pipe box. Pipe can jam and box can be
damaged. Use JT pipe box.
•Move mode selector switch to JT position.
Assemble 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.
Lighting Kit
If you will need additional light, plug lighting kit into provided outlet. Contact your Ditch Witch® dealer for
further information.