NPK Genesis GXT 665R User manual

GXT Mobile Shear
SAFETY & OPERATOR’S MANUAL

© 2022 Genesis Attachments, LLC
Genesis GXT Mobile Shear
2
CONTACT INFORMATION
View and download all manuals: genesisattachments.com/manuals
Patents: genesisattachments.com/products/patents
Asia Pacic Representative O󰀩ce
24 Upper Serangoon View #12-28
Singapore 534205
Phone: [phone]
E-mail:
[email protected]
Europe/Africa/Middle East
Genesis GmbH
Teramostrasse 23
87700 Memmingen, Germany
Phone: [phone]
Fax: [phone]
genesis-europe.com
E-mail:
[email protected]
Central America & Colombia
Cra 13A #89-38 / O 613
Bogota, Colombia
Phone: [phone]
E-mail:
[email protected]
Genesis Attachments
1000 Genesis Drive
Superior, WI 54880 USA
Toll Free: 888-SHEAR-IT
(888-743-2748)
Phone: [phone]
E-mail:
[email protected]

© 2022 Genesis Attachments, LLC Genesis GXT Mobile Shear 3
PREFACE
To ensure years of safe, dependable service, only trained and authorized persons should operate
and service your Genesis attachment. It is the responsibility of the product’s owner to ensure the
operator is trained in the safe operation of the product and has available this manual for review.
It is the responsibility of the operator and maintenance personnel to read, fully understand and
follow all operational and safety-related instructions in this manual. The attachment should not
be operated until you have read and fully understand these instructions. Always use good safety
practices to protect yourself and those around you.
Important
This operator’s manual must accompany the attachment at all times and be readily available to
the operator.
Manual Replacement
Should this manual become damaged or lost or if additional copies are required, immediately
contact any authorized Genesis dealer or the Genesis Service Department at 888-743-
2748 or 715-395-5252 for a replacement. Manuals can also be viewed and downloaded at
genesisattachments.com/manuals.
Registration Form
The Warranty Registration Form must be lled out by the dealer or customer and returned to
Genesis indicating the date the attachment went into service.
Possible Variations
Genesis cannot anticipate every possible circumstance that might involve a potential hazard as
the owner’s requirements and equipment may vary. Therefore, the warnings in this publication
and on the product may not be all-inclusive, and you must satisfy yourself that the procedure,
application, work method or operating technique is safe for you and others before operating.
Public Notice
Genesis reserves the right to make changes and improvements to its products and technical
literature at any time without public notice or obligation. Genesis also reserves the right to
discontinue manufacturing any product at its discretion at any time.
Warranty
All work or repairs to be considered for warranty reimbursement must be pre-authorized by
the Genesis Service Department. Any alterations, modications or repairs performed before
authorization by the Genesis Service Department will render all warranty reimbursement
consideration null and void without exception. See page 69 for Warranty Claim Procedures.
Improper operation or improperly performed maintenance may render any warranty null and void.

© 2022 Genesis Attachments, LLC
Genesis GXT Mobile Shear
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CONTACT INFORMATION 2
PREFACE 3
Important 3
Manual Replacement 3
Registration Form 3
Possible Variations 3
Public Notice 3
Warranty 3
SAFETY STATEMENTS 7
OPERATIONAL SAFETY 8
Read Manual Before Operating or Maintaining the Attachment 8
Personal Protection 8
Know Your Equipment 8
Before Operating 8
Check the Equipment 9
Stability 9
Know the Work Area 10
Starting Procedure 10
Place the Load Safely 10
Safely Operate Equipment 11
Transporting the Attachment 12
Equipment Condition 12
Working Overhead 12
Power Lines 12
Use Care with Hydraulic Fluid Pressure 13
Prioritized Oil Flow 14
Emergency Situations 14
Unsafe Conditions 14
Crystalline Silica Dust 14
Process Material Safely 15
Lift the Load Safely 15
Place the Load Safely 15
SHEAR NOMENCLATURE 16
ROTATION LOCK 18
SHEAR INSTALLATION 19
Dual-Pump Flow 19
ROTATOR INSTALLATION 21
GXT 115-335 Rotation Motor 21
GXT 445 and Larger Rotation Motors 21
Rotation Circuit - Gear Pump / Rotation Valve / Piston Motor 22
Rotation Circuit - Auxiliary / Rotation Valve / Piston Motor 23
Rotation Circuit - Auxiliary / Rotation Valve / Gerotor Motor 24
Rotation Circuit - Gear Pump / Rotation Valve / Gerotor Motor 25
Rotation Circuit - Gear Pump / Rotation Valve / Gear Motor 26
Rotation Circuit - Gear Pump / Auxiliary / Gear Motor 27
TABLE OF CONTENTS

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HYDRAULIC START-UP 28
Start-up Procedure 28
GENERAL OPERATION INSTRUCTIONS 29
Start-up 29
E󰀩cient and Productive Operation 29
Cutting Larger Materials 30
Chatter While Cutting 30
Pulling / Back-Tracking 31
Pushing / Tracking Forward 32
Cutting in a Pile 33
MAINTENANCE SAFETY 34
MAINTENANCE SCHEDULE 36
Scheduled Maintenance 36
Four-Hour Checklist 37
Eight-Hour Checklist 37
LUBRICATION POINTS 38
BOLT TORQUE SPECS 39
BLADE MAINTENANCE 40
AUTOGUIDE 41
AutoGuide Adjustment Procedure 41
PIERCING BLADES 42
Replacement 44
GUIDE BLADES 45
Shimming 45
Rotation 46
Replacement 46
Adjustment Plates 46
PRIMARY AND SECONDARY BLADES 47
Removal 47
Adjustment Plates 48
Rotation 48
Blade Gap 49
Blade Gap Measuring Procedure 49
Shimming 49
RAZOR BLADE 50
GENERAL WELDING GUIDELINES 51
Welding Ground Clamp 51
Welding Rules 51
BUILD-UP 52
HARD-SURFACING 53
HARD-SURFACING PATTERNS 54
HYDRAULIC/ROTATION MAINTENANCE 55
Hydraulic Requirements 55
Rotation Valve Input 55
GenFlow Regeneration Valve 56
Regeneration Valve Adjustment 56
TABLE OF CONTENTS

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Genesis GXT Mobile Shear
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REGENERATION VALVE ADJUSTMENT 57
GENFLOW REGENERATION VALVE - HOW IT WORKS 58
REGEN BLOCK SUB-ASSEMBLY - 320 GPM 59
GENFLOW REGENERATION VALVE - 240 GPM 60
GENFLOW REGENERATION VALVE - 116 GPM 61
SLEWING RING MAINTENANCE 62
GEARBOX MAINTENANCE 63
Planetary Gearbox Lubrication 63
Gearbox Lube Change-out Procedure 63
ROTATION WITH CROSSOVER RELIEF VALVE 64
Setting the Crossover Reliefs 64
ROTATION WITH MOTION CONTROL VALVE 65
TROUBLE-SHOOTING GUIDE 66
WARRANTY 69
Claim Procedure 69
Blade Warranty 69
PARTS ORDER POLICY AND PROCEDURE 70
Parts Orders Should Include 70
Placing Orders 70
Part Numbers 70
Shipping 70
Invoices 70
Returns 70
Return Goods Authorization 70
PARTS ORDER FORM 71
CONTACT INFORMATION 72
TABLE OF CONTENTS
For bolt torque specs, see the Genesis Fastener Manual.
genesisattachments.com/manuals
NOTICE

© 2022 Genesis Attachments, LLC Genesis GXT Mobile Shear 7
SAFETY STATEMENTS
This symbol by itself or used with a safety signal word
throughout this manual is used to call attention to
instructions involving your personal safety or the safety
of others. Failure to follow these instructions can result in
injury or death.
This statement is used where serious injury or death
could result if the instructions are not followed properly.
!WARNING
This statement is used where minor or moderate injury
could result if the instructions are not followed properly.
!
CAUTION
This statement is used where property damage could
result if the instructions are not followed properly.
NOTICE
!DANGER
This statement is used where serious injury or death will
result if the instructions are not followed properly.

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!WARNING
Serious injury or death could result if appropriate
protective clothing and safety devices are not used.
Personal Protection
Use protective clothing and safety devices appropriate for the working conditions. These may
include but are not limited to:
3Hard hat
3Safety glasses, goggles or face shield
3Hearing protection
3Safety shoes
3Heavy gloves
3Reective clothing
3Respirator or lter mask
Know Your Equipment
Know your attachment’s capabilities, dimensions and functions before
operating. Inspect your attachment before operating and never operate an
attachment that is not in proper working order. Remove and replace any
damaged or worn parts.
Before Operating
3Warn all others in the area that you are about to start operation.
3Perform the Check the Equipment steps outlined in this manual.
3Check underneath and around the machine. Make sure all personnel and equipment
are clear from the area of operation and equipment movement. Check clearances in all
directions, including overhead.
3Be properly seated in the operator’s seat.
3Do not attempt to operate until you have read and fully understand this manual and the
OEM manual for the carrier.
OPERATIONAL SAFETY
Read Manual Before Operating or Maintaining the Attachment
Read this manual before attempting to operate the attachment. This operator’s
manual should be regarded as part of the attachment. For proper installation,
operation and maintenance of the attachment, operators and maintenance
personnel must read this manual.

© 2022 Genesis Attachments, LLC Genesis GXT Mobile Shear 9
Check the Equipment
Before use, check the equipment to ensure it is in good operating condition.
Check the following:
3Grease ttings. Pump grease at all tting locations, see page 38.
3Hydraulic uid level. Add hydraulic uid as required.
3Hydraulic hoses and hose connections for wear or leaks. Repair or replace any damaged
hoses or connections.
3All control levers for proper operation.
3Rotation bearing. Visually check for loose or damaged bolts. If
repair is required, refer to qualied personnel.
3Grease rotation bearing and pinion gear.
3Check for loose or missing pin retaining bolts.
3Check cylinders for dents (barrel) or dings (rod).
GOOD
CONDITION
3
!WARNING
Serious injury or death could result if warnings or
instructions regarding carrier stability and the work area
are not followed properly.
Stability
Your Genesis attachment is sized for carrier stability. However, improper operation, faulty
maintenance or unauthorized modications may cause instability.
3Know the working ranges and capacities of the carrier to avoid tipping.
3Use the recommended carrier counter weight.
The following conditions a󰀨ect stability:
• Ground conditions
• Grade
• Weight of attachment
• Contents of attachment
• Operator judgement
For greater stability, knuckle the attachment to bring the load closer to the center of rotation
(center of gravity) while lifting. Use extra caution during reaching to avoid tipping.
OPERATIONAL SAFETY

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Know the Work Area
Check clearances in the work area. Keep all bystanders at a safe distance. Do not work under
obstacles. Always check your location for overhead and buried power lines or other utilities before
operation.
Check ground conditions. Avoid unstable or slippery areas. Position the carrier on rm level
ground. If level ground is not possible, position the carrier to use the attachment to the front or
back of the carrier. Avoid working over the side of the carrier.
To reduce the risk of tipping and slipping, never park on a grade exceeding 10% (one-foot rise
over the span of a ten-foot run).
Starting Procedure
Before operating, walk completely around the equipment to make certain no one is under it, on it
or close to it. Keep all bystanders at least 75 feet away from the area of operation and equipment
movement. Let all other workers and bystanders know you are preparing to start. DO NOT operate
until everyone is clear.
Always be properly seated in the operator’s seat before operating any carrier controls.
To start:
3Make sure all controls are in the center (neutral) position.
3Be properly seated.
3Slowly operate all functions to check for proper operation and to bleed air from the
hydraulic system.
To shut down:
3Return your Genesis attachment to a rest position on the ground.
3Shut o󰀨 the carrier engine.
3Work controls in all directions to relieve hydraulic pressure, per excavator manufacturer’s
instructions.
!WARNING
Serious injury or death could result if warnings or
instructions regarding safe operation are not followed
properly.
Place the Load Safely
Do not move the attachment, or anything held in the jaws, over people, equipment or buildings. Do
not throw or drop the contents. Operate the controls smoothly and gradually.
OPERATIONAL SAFETY

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Safely Operate Equipment
Do not operate equipment until you are trained by a qualied operator in its use and capabilities.
See your carrier’s manual for these instructions.
3Operate only from the operator’s seat. Check the seat belt daily and replace if frayed or
damaged.
3Do not operate this or any other equipment under the inuence of drugs or alcohol. If you
are taking prescription medication or over-the-counter drugs ask your medical provider
whether you can safely operate equipment.
3Never leave equipment unattended with the engine running or with the attachment in a
raised position. Apply the brakes before exiting the equipment.
3Do not exceed the lifting capacity of your carrier.
3Avoid conditions that can lead to tipping. The carrier can tip when operated on hills, ridges,
banks and slopes. Avoid operating across a slope which could cause the carrier to overturn.
3Reduce speed when driving over rough terrain, on a slope, or when
turning to avoid overturning the carrier.
3Never use the attachment as a work platform or personnel carrier.
3Keep all step plates, grab bars, pedals and controls free of dirt, grease,
debris and oil.
3Never allow anyone to be around the equipment when it is operating.
3Do not operate poorly maintained or otherwise faulty equipment. Inform the proper authority
and DO NOT resume operation until the problem has been xed.
3Do not alter or remove any safety features.
3Know your work site safety rules as well as tra󰀩c rules and ow.
When in doubt on any safety issue, contact your supervisor or safety
coordinator for an explanation.
3A heavy load can cause equipment instability. Use extreme care during travel. Slow down
on turns and watch out for bumps. The equipment may need additional counter-weights to
counterbalance the weight of the attachment.
OPERATIONAL SAFETY

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Power Lines
Do not operate the machine near energized power lines. All local, state/provincial and federal
regulations must be met before approaching power lines, overhead or under-
ground cables, or power sources of any kind with any part of the carrier or
attachment. Always contact the appropriate utility when operating near power
lines. The lines should be moved, insulated, disconnected or de-energized
and grounded before operating in the area.
Current in high voltage lines may arc some distance from the wire to a nearby ground. Keep all parts
of the machine at least 50 feet (16m) away from power lines.
Working Overhead
Avoid handling material overhead whenever possible. Safety glass and wire mesh
cab guarding must be installed to protect the operator from ying debris that may
be created during handling. Falling Object Protection Structures, or FOPS, are
necessary for any application where material is to be handled overhead.
Transporting the Attachment
3Travel only with the attachment in a safe transport position to prevent uncontrolled
movement. Drive slowly over rough ground and on slopes.
3When driving on public roads use safety lights, reectors, Slow Moving Vehicle signs, etc.,
to prevent accidents. Check local government regulations that may a󰀨ect you.
3Do not drive close to ditches, excavations, etc., as cave-in could result.
3Do not smoke when refueling the prime mover. Allow room in the fuel tank for expansion.
Wipe up any spilled fuel. Secure cap tightly when done.
Equipment Condition
Never operate poorly maintained equipment. When maintenance is required, repair or replace
parts immediately.
!WARNING
Serious injury or death could result if warnings or
instructions regarding working overhead are not followed
properly.
!DANGER
Serious injury or death will result if warnings or instructions
regarding power lines are not followed properly.
OPERATIONAL SAFETY

© 2022 Genesis Attachments, LLC Genesis GXT Mobile Shear 13
Use Care with Hydraulic Fluid Pressure
Hydraulic uid under pressure can penetrate the skin and cause serious injury or death.
Hydraulic leaks under pressure may not be visible.
3Keep unprotected body parts, such as face, eyes and arms as far away
as possible from a suspected leak. Flesh injected with hydraulic uid may
develop gangrene or other permanent injuries.
3If injured by injected uid see a doctor immediately.
3Wear safety glasses and protective clothing and use a piece of cardboard
or wood when searching for hydraulic leaks.
Do Not Use Your Hands!
See illustration below.
3Hydraulic oil becomes hot during operation. Do not let hydraulic oil or
components contact skin, as it could cause severe burns. Allow hydraulic
components to cool before working on them. Use appropriate protective
clothing and safety equipment. If burned, seek immediate medical attention.
!WARNING
Serious injury or death could result if warnings or
instructions regarding hydraulic uid pressure are not
followed properly.
OPERATIONAL SAFETY

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OPERATIONAL SAFETY
IMPORTANT: Concrete and masonry products contain silica sand.
Quartz, which is a form of silica and the most common mineral in the
Earth’s crust, is associated with many types of rock.
Some activities that may have silica dust present in the air include
demolition, sweeping, loading, sawing, hammering, drilling or planing of
rock, concrete or masonry.
It is recommended to use dust suppression (such as water) or dust
collection (such as a vacuum) along with personal protective equipment
if necessary during the operation of any attachment that may cause high
levels of silica dust.
Prioritized Oil Flow
Equipment operators must ensure there is prioritized oil ow to the main valves in overhead
operations or high reach conditions.
Emergency Situations
Always be prepared for emergencies. Make sure a re extinguisher is available.
Be familiar with its operation. Make sure to inspect and service the re extinguisher
regularly. Make sure a rst aid kit is readily available.
Unsafe Conditions
Do not operate if an unsafe condition exists. Stop operation immediately, shut down the machine
and report the unsafe condition to the proper authority. Equipment operation and maintenance
practices directly a󰀨ect your safety and the safety of those around you. Always use common
sense while operating and be alert to unsafe conditions.
Crystalline Silica Dust
It is recommended to use dust suppression, dust collection and if necessary, personal protective
equipment during the operation of any attachment that may cause high levels of dust.
!DANGER
Exposure to respirable crystalline silica dust along
with other hazardous dusts may cause serious or fatal
respiratory disease.

© 2022 Genesis Attachments, LLC Genesis GXT Mobile Shear 15
OPERATIONAL SAFETY
!WARNING
Using your Genesis attachment in unauthorized
applications may create an unsafe situation and will void
the warranty.
Process Material Safely
• Do not process hardened steel material such as tool steel, railroad rail, axles, springs,
machined parts or high-strength material. Hardened/high-strength material breaks, rather than
shears, which may cause ying debris. It will also cause damaging decompression spikes to
your Genesis attachment and base carrier hydraulic systems.
• Do not operate any functions of the carrier while cutting or crushing with your attachment,
including boom and drive functions.
• Do not pull down structures with your Genesis attachment. Doing so may cause falling debris
or material to break free and exceed the capacities of the carrier, causing a tipping hazard and
rotation component failures.
• Do not use rotation to pry or break material. Doing so exerts high back-driving forces and
spikes to the rotation circuit components that cannot be cushioned hydraulically. It may also
cause motor and gearbox failures. The rotator should only be used for positioning an
attachment.
• Do not process pressurized containers unless the main valve has been removed and you are
absolutely certain the container is empty.
• Do not process spring loaded brake chambers and automotive struts as the release of
compressed springs is extremely dangerous. Nothing made of spring material or containing
springs should be processed.
Lift the Load Safely
• The hydraulic system has been preset and tested by your dealer. Do not alter hydraulic set-
tings without consulting an authorized Genesis dealer or the Genesis Service Department.
Doing so will void the warranty and may cause structural damage, accidents or tipping.
• Make sure the load is held securely in the jaws. Do not move a loaded attachment if load is
loose or dangling. Make sure the load is pinched between the jaws – never cradle a load.
• For greater stability, knuckle the attachment to bring the load closer to the center of rotation
(center of gravity) while lifting. Use extra caution during reaching to avoid tipping.
Place the Load Safely
• Do not move the attachment, or anything held in the jaws, over people, equipment or
buildings. Place the load gently. Do not throw or drop the contents.
• Operate the controls smoothly and gradually. Jerky controls are hazardous and may cause
damage to the carrier.
• Avoid re hazards. Keep the area clean. Remove all ammable materials from the area during
any welding or heating process. Have a re extinguisher nearby and know how to use it.
• Never substitute pins or bolts. Use factory supplied pins. Replace all bolts with the same size
and grade. Failure to do so may cause serious injury or death and void the warranty.
• Use your Genesis attachment only as directed in this manual. Do not use the attachment to lift
and move other objects. Doing so may cause instability and tipping.

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SHEAR NOMENCLATURE
4 5 6 8 9 10
12
14
123 7
11
13
15 16
17
18
19
20
1011
21
22

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SHEAR NOMENCLATURE
1Slewing Ring Connects the shear head to the shear stick or body. Not used on
straight shears.
2Shear Sub-Head Houses and protects the hydraulic components used for 360°
rotation.
3Stick-Pin Connection Cylinder pin connection
4Boom Pivot Connection
5Rear Cylinder Pin Main cylinder
6Shear Stick or Body Houses and protects the main hydraulic cylinder.
7AutoGuide or Puck See the Genesis Fastener Manual for torque value.
8Pivot Group Includes the end cap, tie rod and tie rod nut.
9Lower Shear Jaw
10 Chin Keep top edge built up, maintain radii in razor blade pocket after
build-up and hard-surfacing.
11 Razor Blade NEVER insert shims behind.
12 Guide Blades
Insert shims between the adjustment plate and blade when set-
ting/adjusting blade gap.
Note: From the operator’s view, the left guide blade may or
may not have an adjustment plate. If not, insert shim(s) directly
against the back of the guide blade.
13 Secondary Blades
Upper and lower cutting blades. Only insert shims behind the
lower, placing between the adjustment plate and blade when set-
ting/adjusting blade gap.
14 Primary Blades
Upper and lower cutting blades. Only insert shims behind the
lower, placing between the adjustment plate and blade when set-
ting/adjusting blade gap.
15 Upper Shear Jaw Never shim blades in upper jaw.
16 Protection Strips
Raised areas of parent material along the blade pockets on up-
per and lower jaws should be ush to 0.010” below the blade
faces.
17 Rhino Horn
18 Tang Parent material underneath and between the piercing blades
19 Piercing Blades NEVER insert shims behind.
20 Access Cover Access to hydraulic cylinder and regen block.
21 Access Cover Access to hydraulic motor, gear box and rotation ow controls.
22 Shear Head Lugs Shear serial number required for replacement parts.

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ROTATION LOCK
Rotation (transport) locks are installed at the factory to allow the bracket to be shipped with the
mounting pins facing upward. This is benecial to the end user when removing the attachment
from the truck and mounting it to the excavator.
Rotation locks MUST be removed before operating the attachment to prevent rotation
system damage.
The rotation locks are located inside the small bolt covers for the slewing ring and marked with
a red ag labeled “REMOVE ROTATION LOCK BEFORE OPERATION”. The cover bolt can be
threaded into the rotation lock for removal.
There are TWO locks in every attachment, one on either side of the bracket. In some cases, one
of the port blocks may need to be removed to access the rotation lock. The rotation locks and red
ags should be saved for use during future transportation.

© 2022 Genesis Attachments, LLC Genesis GXT Mobile Shear 19
SHEAR INSTALLATION
Preparation of the excavator prior to attachment delivery will make installation safer and
easier. Contact Genesis or your Genesis dealer for assistance.
Dual-Pump Flow
An excavator typically has two hydraulic pumps that supply oil to its main control valve, which
is usually separated into two halves. Combining the ow from both halves of the control valve is
called summating, thus achieving dual-pump ow to operate one circuit.
Summating is the preferred method of achieving maximum speed to an attachment. However,
interchanging the stick and bucket circuits may also substantially increase speed.
A bucket circuit is usually single-pump ow while a stick circuit is dual-pump ow. At times, adding
an auxiliary circuit spool to the stick circuit helps reduce back pressure in the system and speed
up jaw open and close.
In certain cases, the bucket and auxiliary circuits can be summated to achieve dual-pump ow,
depending on whether the bucket and auxiliary are on separate sides of the main valve and
whether the auxiliary circuit can be proportionally controlled by teeing into the bucket pilot control
circuit.
The auxiliary circuit must also be capable of proportionally controlling pump initiation on the
auxiliary side of the circuit. On many excavators, the auxiliary circuit is controlled by the ow
percentage set in the operating system. Because attachments take all the ow the pumps can
give them, when this percentage is reached, the pump will instantly turn on or o󰀨 instead of
gradually increasing or decreasing, which can cause sharp, damaging spikes in the hydraulic
circuit.
If excavator circuits are electronically controlled, it may be necessary to reduce the spool shift and
pump initiation in the excavator software to take spiking out of the circuit when changing
attachment cylinder direction from full extend or full retract.
On excavators with full hydraulic spool piloting, install a ow control into the pilot lines between
the joystick and spools. The ow control can then be adjusted to slow the pilot oil ow to the spool,
which in turn slows how the spool shifts and the pumps stroke up.

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!WARNING
Be sure hydraulic pressure is relieved before
disconnecting hydraulic ttings. Remove necessary ttings
SLOWLY.
The attachment is usually shipped in an upright position. Extreme care must be used when
inverting the attachment for installation.
Follow the excavator OEM’s removal and safety instructions to remove the bucket or other stick
attachments.
Position the attachment upside down on at, solid ground. Blocking may be required to raise the
mounting bracket into proper position.
Track the excavator to the attachment with the jaws facing the
operator. Lift the excavator stick over the attachment, carefully
positioning the stick tip connection with the attachment mounting
main pivot bore. Pin the excavator stick to the attachment.
Slowly raise the boom to lift the attachment, allowing the
cylinder pivot connection to come within range of the excavator
cylinder stroke.
Extend the excavator cylinder until the power link bore lines up
with the cylinder pivot connection. Pin the excavator cylinder to the
attachment.
Crowd and extend the attachment, checking closely to make sure
there is no interference between the bracket and hard lines. Also
check for interference between the cylinder and boom/stick.
Install excavator hydraulic hoses, supply and return, from the stick
tip to the attachment manifold blocks.
The stick and bucket circuits are oriented as to rod and bore
sides of their respective cylinders. Be sure to connect rod-to-
rod and bore-to-bore when connecting a circuit to the attachment. When these are reversed,
extra pressure is needed to open the jaw, which pulls down the engine, de-strokes the pumps,
increases jaw cycle time, creates high oil temperature and burns more fuel.
The attachment must be vertical before putting oil into it or an air lock in the regen valve may
prevent the jaw from opening.
SHEAR INSTALLATION
!WARNING
Removing any connecting pin may be hazardous. To remove
a connecting pin, position the attachment on the ground and
properly support.
Particles may y when a pin is struck. Use a drift pin or mallet
when striking pins. Keep all personnel at a safe distance.