Blue Diamond TRENCGER User manual

MANUFACTURER'S LIMITED WARRANTY
BLUE DIAMOND ATTACHMENTS, a manufacturer of quality attachments, warrants new BLUE
DIAMOND ATTACHMENTS products and/or attachments at the time of delivery to the original
purchaser, to be free from defects in material and workmanship when properly set up and operated
in accordance with the recommendations set forth by BLUE DIAMOND ATTACHMENTS, LLC.
BLUE DIAMOND ATTACHMENTS liability for any defect with respect to accepted goods shall be
limited to repairing the goods at a BLUE DIAMOND ATTACHMENTS designated location or at an
authorized dealer location, or replacing them, as BLUE DIAMOND ATTACHMENTS shall elect. The
above shall be in accordance with BLUE DIAMOND ATTACHMENTS warranty adjustment policies.
BLUE DIAMOND ATTACHMENTS obligation shall terminate twelve (12) months for the Trencher
after the delivery of the goods to original purchaser.
This warranty shall not apply to any machine or attachment which shall have been repaired or altered
outside the BLUE DIAMOND ATTACHMENTS factory or authorized BLUE DIAMOND
ATTACHMENTS dealership or in any way so as in BLUE DIAMOND ATTACHMENTS judgment, to
affect its stability or reliability, nor which has been subject to misuse, negligence or accident beyond
the Company recommended machine rated capacity.
WARRANTY CLAIM
To submit a warranty claim, a return authorization from BLUE DIAMOND ATTACHMENTS must be
obtained. The failed part may then be returned. Tampering with the failed part may void the warranty.
This warranty does not include freight or delivery charges incurred when returning machinery for
servicing. Dealer mileage, service calls, and pickup/delivery charges are the customers'
responsibility.
EXCLUSIONS OF WARRANTY
Except as otherwise expressly stated herein, BLUE DIAMOND ATTACHMENTS makes no
representation or warranty of any kind, expressed or implied, AND MAKES NO WARRANTY OF
MERCHANTABILITY IN RESPECT TO ITS MACHINERY AND/OR ATTACHMENTS ARE FIT FOR
ANY PARTICULAR PURPOSE. BLUE DIAMOND ATTACHMENTS shall not be liable for incidental
or consequential damages for any breach or warranty, including but not limited to inconvenience,
rental of replacement equipment, loss of profits or other commercial loss. Upon purchase, the buyer
assumes all liability for all personal injury and property resulting from the handling, possession, or
use of the goods by the buyer.
No agent, employee, or representative of BLUE DIAMOND ATTACHMENTS has any authority to
bind BLUE DIAMOND ATTACHMENTS to any affirmation, representation, or warranty concerning its
machinery and/or attachments except as specifically set forth herein.
This warranty policy supersedes any previous documents.
NOTE: Blue Diamond Attachments is a trademark of BLUE DIAMOND ATTACHMENTS

i
Trencher Operation and Maintenance Manual
Table Of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Owner Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Attachment Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Safe Operation Needs A Qualified Operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Importance of Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
General Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Machine Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Trencher Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Pre-Operation Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Attachment Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Daily Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Weekly Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Attachment Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Entering The Operator’s Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Leaving The Operator’s Position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Connecting Attachment To The Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Connecting Hydraulic Hoses. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Disconnecting Hydraulic Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Disconnecting Attachment From The Machine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Setting Trencher Depth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Operating The Attachment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Checking The Trencher Hydraulic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
Service Schedule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Maintenance Intervals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Cutting Teeth Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Trencher Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Auger Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Boom Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33
Chain Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
Hydraulic Hose Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

ii Trencher Operation and Maintenance Manual
Table Of Contents
Trencher Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Shoe Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Sprocket Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Nose Roller Bearing Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Seal Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Installing a Trencher Chain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Cleaning The Attachment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Trencher Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Trencher Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Decal Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Attachment Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Torque Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Standard Hardware And Lock Nuts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Introduction
5
Trencher Operation and Maintenance Manual
Introduction
Owner Information 7
Attachment Identification 9

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7
Trencher Operation and Maintenance Manual
Introduction
Owner Information
Congratulations on the purchase of your new Blue
Diamond attachment! This product was carefully
designed and manufactured to give you many
years of dependable service. Only minor
maintenance is required to keep it in top working
condition. Be sure to observe all maintenance
procedures and safety precautions in this manual
and on any safety decals located on the product
and on any equipment on which the attachment is
mounted.
This manual has been designed to help you do a
better, safer job. Read this manual carefully and
become familiar with its contents.
WARNING
Never let anyone operate this unit without
reading the “Safety Precautions” and
“Operating Instructions” sections of this
manual. Always choose hard, level ground
to park the vehicle on and set the brake so
the unit cannot roll. Unless noted otherwise,
right and left sides are determined from the
operator’s control position when facing the
attachment.
Operate and maintain this equipment in a safe
manner and in accordance with all applicable
local, state, and federal codes, regulations and /
or laws. Follow all on-product labeling and
instructions.
Make sure that all personnel have read this
Operator’s Manual and thoroughly understand
safe and correct operating, installation and
maintenance procedures.
Blue Diamond is continually working to improve its
products. Blue Diamond reserves the right to
make any improvements or changes as deemed
practical and possible without incurring any
responsibility or obligation to make any changes
or additions to equipment sold previously.
Although great care has been taken to ensure the
accuracy of this publication, Blue Diamond makes
no warranty or guarantee of any kind, written or
expressed, implied or otherwise with regard to the
information contained within this manual. Blue
Diamond assumes no responsibility for any errors
that may appear in this manual and shall not be
liable under any circumstances for incidental,
consequential or punitive damages in connection
with, or arising from the use of this manual.
Keep this manual available for frequent reference.
All new operators or owners must review the
manual before using the equipment and annually
thereafter. Contact your Blue Diamond
Attachments Dealer for assistance, information, or
additional copies of the manual. Contact
www.bluediamondattachments.com or call 888-
376-7027 for a complete list of dealers in your
area.

8Trencher Operation and Maintenance Manual
Introduction
Serial Number Location
Please record attachment information in the space
provided for future reference.
Figure 1
The serial number plate (Item 1) is located on the
left side of the trencher frame.
Always use your serial number when requesting
information or when ordering parts.
Proof of service must be provided in hard copy
form of both operational and service history
(including serial number of gearbox and hydraulic
motor) records. Service must be performed by an
authorized Blue Diamond dealer.
NOTE: The directions left, right, front and rear, as
mentioned throughout this manual, are as
viewed from the operator’s position.
1
Model Number:
Trencher Serial
Number:
Gearbox Serial
Number:
Hydraulic Motor
Serial Number:
Dealer Name:
Dealer Number:
Date of Purchase:

9
Trencher Operation and Maintenance Manual
Introduction
Attachment Identification
BOOM
AUGER
ATTACHMENT
MOUNTING FRAME
CHAIN
SCRAPER
SHOE
CUTTING
TEETH

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QUALITY / DEPENDABILITY / INTEGRITY

Safety
11
Trencher Operation and Maintenance Manual
Safety
Safety Information 13

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Trencher Operation and Maintenance Manual
Safety
Safety Information
SAFETY ALERT SYMBOL
This SAFETY ALERT SYMBOL identifies
important safety messages on the
equipment and in the owner’s manual. When
you see this symbol, be alert to the
possibility of personal injury and carefully
read the message that follows.
DANGER
The signal word DANGER on the machine
and in the manuals indicates a hazardous
situation which, if not avoided, will result in
death or serious injury.
WARNING
The signal word WARNING on the machine
and in the manuals indicates a potentially
hazardous situation which, if not avoided,
could result in death or serious injury.
CAUTION
The signal word CAUTION on the machine
and in the manuals indicates a potentially
hazardous situation which, if not avoided,
may result in minor or moderate injury. It
may also be used to alert against unsafe
practices.
IMPORTANT
The signal word IMPORTANT identifies
procedures which must be followed to avoid
damage to the machine.
Safe Operation Needs A Qualified Operator
WARNING
AVOID SERIOUS INJURY OR DEATH
Operators must receive instructions before
operating the machine. Untrained operators
can cause serious injury or death.
For an operator to be qualified, he or she
must not use drugs or alcoholic drinks
which impair alertness or coordination while
working. An operator who is taking
prescription drugs must get medical advice
to determine if he or she can safely operate
a machine and the equipment.
DANGER
AVOID SERIOUS INJURY OR DEATH
Call Before you dig.
Operator Training
• Check the rules and regulations at your
location. The rules may include an employer’s
work safety requirements. Regulations may
apply to local driving requirements or use of a
Slow Moving Vehicle (SMV) emblem.
Regulations may identify a hazard such as a
utility line.
• The new operator must start in an area without
bystanders and use all the controls until he or
she can operate the machine safely under all
conditions of the work area.

14 Trencher Operation and Maintenance Manual
Safety
Importance of Safety
Operating Safety
• Read and follow instructions in this manual and
the machine’s Operator’s Manual before
operating.
• This equipment is dangerous to persons
unfamiliar with its operation.
• Check for overhead and / or underground lines
before operating equipment (if applicable).
• In addition to the design and configuration of
equipment, hazard control and accident
prevention are dependent upon the
awareness, concern, prudence and proper
training of personnel involved in the operation,
transport, maintenance and storage of
equipment.
• Check that the attachment is securely fastened
to the machine.
• Make sure all the machine controls are in
NEUTRAL before starting the machine.
• Operate the equipment only from the
operator’s position.
• Operate the equipment according to the
Operator’s Manual.
• When learning to operate the equipment, do it
at a slow rate in an area clear of bystanders.
• DO NOT permit personnel to be in the work
area when operating the equipment.
• The equipment must be used ONLY on
approved machines.
• DO NOT modify the equipment in any way.
Unauthorized modification may impair the
function and / or safety and could affect the life
of the equipment. Affect or void warranty too.
• DO NOT make any adjustments or repairs on
the equipment while the machine is running.
• Keep shields and guards in place. Replace if
damaged.
• DO NOT operate equipment in poor visibility
conditions such as fog, darkness, or any
conditions that limit clear visibility less than 300
feet (100 m) in front of and to the sides of the
equipment.
• DO NOT operate in a work area that has not
been inspected for foreign debris and
obstacles.
• Remove any foreign objects and clearly mark
any objects that cannot be removed.
• Wear safety glasses, gloves, hearing
protection and other protective clothing when
required.
Operating the Trencher
• An operator must not use drugs or alcohol,
which can change his or her alertness or
coordination. An operator taking prescription or
over-the-counter drugs should seek medical
advice on whether or not he or she can safely
operate equipment.
• All bystanders should be kept a minimum of 20
feet (6 meters) away from the working area of
the drive.
• Do not allow site workers to climb or ride on
trencher at any time, including while stationary,
in operation or being moved.
• Operate only from the operator’s station.
• Avoid steep hillside operation which could
cause the machine to overturn. Consult your
machines operator’s and safety manuals for
maximum incline allowable.
• Reduce speed when driving over rough terrain,
on a slope, or turning, to avoid overturning the
vehicle.

15
Trencher Operation and Maintenance Manual
Safety
Importance of Safety Cont’d
• Travel only with the trencher in a safe transport
position.
• Do not drive close to ditches, excavations, etc.,
cave in could result.
• Flow and pressure gauges, fittings, and hoses
must have a continuous operating pressure
rating of at least 25% higher than highest
pressures of the system.
• Do not smoke when refueling the machine.
Allow room in the fuel tank for expansion. Wipe
up any spilled fuel. Secure cap tightly when
done.
• Remove the trencher from the machine before
transporting to and from the job site.
• Trenchers shall be used only for their designed
intent and shall not be loaded beyond their
rated capacity. Overloading or exceeding the
manufacturers specifications will void all
warranty.
• The trencher must be stopped before making
adjustments to the attachment.
• Soil augers shall be cleaned only when the
rotating mechanism is in neutral and the spoil
auger stopped; a long-handled shovel shall be
used to move cuttings from the auger.
Materials heavier than 10kg must be moved
mechanically or by using at least two people.
• Trenching operations must be stopped in the
event of a local thunderstorm, or lightning
activity. During operation, weather conditions
shall be monitored; operations shall cease
during electrical storms or when electrical
storms are imminent.
• A trench that is left for prolonged periods of
time must be capped and flagged so it is clearly
identified on the work site.
Fire Prevention Safety
• Flammable debris (leaves, grass, etc.) must be
removed regularly. If flammable debris is
allowed to accumulate, it can cause a fire
hazard. Clean often to avoid this accumulation.
• The equipment’s hydraulic motor compartment
must be inspected every day and cleaned if
necessary to prevent fire hazards and
overheating.
• All fuels, most lubricants and some coolant
mixtures are flammable. Flammable fluids that
are leaking or spilled onto hot surfaces or onto
electrical components can cause a fire.
Transporting Safety
• Comply with state and local laws governing
highway safety and movement of machinery
on public roads.
• Check local laws for all highway lighting and
marking requirements.
• Never allow riders on either machine or
equipment.
• If transporting the attachment on a truck or
trailer, make sure it is properly secured to the
transport vehicle.
Hydraulic System
• Check hydraulic tubes, hoses and fittings for
damage and leakage. Never use open flame or
bare skin to check for leaks. Hydraulic tubes
and hoses must be properly routed and have
adequate support and secure clamps. Tighten
or replace any parts that show leakage.
• Always clean fluid spills. Do not use gasoline or
diesel fuel for cleaning parts. Use commercial
nonflammable solvents.

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Operation
17
Trencher Operation and Maintenance Manual
Operation
General Information 19
Attachment Inspection 21
Attachment Installation 22
Setting Trencher Depth 24
Operating The Attachment 25

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Trencher Operation and Maintenance Manual
Operation
General Information
Machine Requirements
IMPORTANT
See the machine’s Operator’s Manual for
detailed information on operating the loader
before attempting to use the Trencher.
IMPORTANT
Warranty will be void if the Trencher is fitted
to an alternative machine without first
receiving written confirmation from Blue
Diamond or your Blue Diamond dealer.
Refer to the serial tag for max low and pressure
ratings.
Review the job site and determine the trencher
chain type is appropriate for the intended
trenching conditions. Do not use dirt teeth in
medium to hard conditions, rock teeth is the
correct selection.
Contact Blue Diamond for chain options.
Trencher Requirements
• Continuous operating temperature must not
exceed 175°F (80°c)
• During extended stationary periods (one
month or more), the unit should be run monthly
to immerse all internals in oil, thereby
preventing corrosion.
• Oil should be changed when hot, to prevent a
build up of sludge deposits. Flush interior of
unit with fluid recommended by oil companies.
• DO NOT mix oil of different viscosity, NOT
even those of the same brand.
• NEVER mix mineral and synthetic oils.
Pre-Operation Inspection
Before operating the trencher for the first time and
each time thereafter, use the following list as a
guideline during equipment inspection.
WARNING
AVOID SERIOUS INJURY OR DEATH
• Disengage machine’s auxiliary
hydraulics, engage the machine’s
parking brake, stop the engine and make
sure all rotating components are
completely stopped before connecting,
disconnecting, adjusting or cleaning
equipment.
• Always keep shields and all guards in
place when using the equipment.
• Disengage machine’s auxiliary
hydraulics for road travel.
• Keep hands, feet and clothing away from
rotating parts.

20 Trencher Operation and Maintenance Manual
Operation
• Fully clean the attachment. See “Cleaning The
Attachment” on page 41.
• Perform attachment maintenance per the
schedule outline in the Maintenance Section.
See “Service Schedule” on page 31.
• Check the trencher mounting plate for wear or
damage.
• Check the trencher teeth and chain for
entangled debris, wear or damage.
• Check that all shields and guards are in place.
• Check for loose bolts and tighten them if
necessary.
• Check all welds on the attachment for cracks
each time the attachment is removed from the
machine.
• Check for damaged or missing safety decals.
Replace if necessary.
• Inspect the machine’s mounting frame. (See
the machine's Operator’s Manual for
inspecting the mounting frame). Replace any
parts that are damaged, bent or missing. Keep
all fasteners tight. Look for cracked welds.
WARNING
Leaking fluids under pressure can enter the
skin and cause serious injury or death.
Immediate medical attention is required.
Wear goggles. Use cardboard to check for
leaks.
• Check condition of all hydraulic components
for leaks. Repair as required.
NOTE: Do not operate with hydraulic leaks.
• Verify that the trencher is properly connected
to the machine.