NPK Genesis GHG 16 User manual

Handling Grapple (GHG)
Models GHG 16 - GHG 50
SAFETY & OPERATOR’S MANUAL

© 2022 Genesis Attachments, LLC
Genesis GHG 16 - GHG 50 Handling Grapple
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 GHG 16 - GHG 50 Handling Grapple 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.
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 discon-
tinue 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 52 for Warranty Claim Procedures.
Improper operation or improperly performed maintenance may render any warranty null and void.

© 2022 Genesis Attachments, LLC
Genesis GHG 16 - GHG 50 Handling Grapple
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TABLE OF CONTENTS
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
SERIAL NUMBER LOCATION 16
MAINTENANCE SAFETY 17
Pinch Points & Crush Points 17
Performing Maintenance 17
MAINTENANCE 20
Daily Inspection and Maintenance 20
Arm Maintenance 20
Frame Maintenance 20
Frame Crack Repair 20
SLEWING RING MAINTENANCE 21

© 2022 Genesis Attachments, LLC Genesis GHG 16 - GHG 50 Handling Grapple 5
TABLE OF CONTENTS
ROTARY JOINT MAINTENANCE 22
Hydraulic Rotary Joint Assembly 22
Seal Leakage 22
Testing the Rotary Joint Seals for Internal Leakage 22
Rotary Joint Seal Replacement 23
LUBRICATION POINTS 25
GENERAL WELDING GUIDELINES 26
Welding Ground Clamp 26
Welding Rules 26
HARD-SURFACING 27
HYDRAULIC FLOW AND PRESSURE 28
Flow and Pressure Specications 28
HYDRAULIC INSTALLATION 29
Hydraulic Lines 29
Shut-O󰀨 Valves 29
Port Connection Diagram 30
HYDRAULIC CIRCUITS 31
Cylinder Hydraulic Circuit 31
Single Motor Hydraulic Circuit 32
Dual Motor Hydraulic Circuit 32
GRAPPLE INSTALLATION 33
Mounting to the Excavator 34
Removal from the Excavator 34
Grapple Storage 34
OPERATING TECHNIQUES AND PRECAUTIONS 35
TROUBLE-SHOOTING GUIDE 36
Determine the Type of Problem 36
Determine the Cause of the Problem 36
Guide for Power Loss 36
Measuring Operating Pressures 36
Relief Valve Checking and Setting 36
Counterbalance Valve Location 38
Low Power 39
Slow Cylinder Speed 40
Checking Hydraulic Flow at Rated Pressure 40
Slow Cylinder Speed 42
Jaw Drift 42
Slow Rotation Speed 43
Measuring Rotation Pressures 44
Checking Rotation Pressure 44
Rotation Speed Adjustment 45
Torque Charts 46
PINION GEAR INSTALLATION 48
CYLINDER TORQUE SPECIFICATIONS 49
Rod Nut and Piston Torques 49

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Genesis GHG 16 - GHG 50 Handling Grapple
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CONVERT FROM DUAL MOTOR TO SINGLE MOTOR 50
Models GHG 20 - GHG 40 50
COMPONENT KEYWORDS 51
WARRANTY 52
Claim Procedure 52
PARTS ORDER POLICY AND PROCEDURE 53
Parts Orders Should Include 53
Placing Orders 53
Part Numbers 53
Shipping 53
Invoices 53
Returns 53
Return Goods Authorization 53
PARTS ORDER FORM 54
CONTACT INFORMATION 55
TABLE OF CONTENTS

© 2022 Genesis Attachments, LLC Genesis GHG 16 - GHG 50 Handling Grapple 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 GHG 16 - GHG 50 Handling Grapple 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 25.
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.
3Check cylinders for dents (barrel) or dings (rod).
3Do not operate without inspection/access covers in place.
GOOD
CONDITION
3
!WARNING
Serious injury or death could result if carrier stability and
compatibility warnings and instructions are not followed.
Stability
Your Genesis attachment is sized for carrier stability. However, improper operation, faulty
maintenance or unauthorized modications may cause instability. The excavator weight ranges
below are intended as a guideline only. Other factors, such as stick length, counterweights and
under-carriage must be taken into consideration.
Mounting an attachment that is too heavy for the excavator can be dangerous and damage the
machine. Verify excavator stability with the attachment before transport or operation. Mounting an
attachment that is too small for the excavator can damage the attachment and void the warranty.
Contact Genesis for specic detailed information.
OPERATIONAL SAFETY
Model
Recommended Excavator Class
3rd Member Mounting
US Ton Metric Ton
GHG-16 11 - 17.5 10 - 16
GHG-20 15 - 22 14 - 20
GHG-25 17.5 - 29 16 - 26
GHG-30 20 - 33 18 - 30
GHG-40 27.5 - 44 25 - 40
GHG-50 38.5 - 55 35 - 50

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Genesis GHG 16 - GHG 50 Handling Grapple
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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.
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.
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

© 2022 Genesis Attachments, LLC Genesis GHG 16 - GHG 50 Handling Grapple 11
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 without inspection (access) covers in place.
3Do not operate without an impact resistant shield between the grapple and the operator.
3Operate with extreme caution near walls or columns that may collapse
and near concrete debris that may fall.
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 counterweights to
counterbalance the weight of the attachment.
OPERATIONAL SAFETY

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Genesis GHG 16 - GHG 50 Handling Grapple
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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 GHG 16 - GHG 50 Handling Grapple 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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Genesis GHG 16 - GHG 50 Handling Grapple
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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 GHG 16 - GHG 50 Handling Grapple 15
!WARNING
Using your Genesis attachment in unauthorized
applications may create an unsafe situation and will void
the warranty.
Process Material Safely
• Do not pull down structures with your Genesis attachment. Doing so may cause falling debris
or material may break free and exceed the capacities of the carrier, causing a tipping hazard.
• The rotator should only be used for positioning your Genesis attachment. Do not use the
rotator to pry or break material.
Lift the Load Safely
• The hydraulic system has been preset and tested by your dealer. Do not alter hydraulic
settings 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 tines. Do not move a loaded attachment if load is
loose or dangling. Make sure the load is pinched between the tines – never cradle a load.
Place the Load Safely
• Do not move the attachment, or anything held in the tines, 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.
• 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.
OPERATIONAL SAFETY

© 2022 Genesis Attachments, LLC
Genesis GHG 16 - GHG 50 Handling Grapple
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SERIAL NUMBER LOCATION

© 2022 Genesis Attachments, LLC Genesis GHG 16 - GHG 50 Handling Grapple 17
Only trained and authorized persons should perform maintenance on the attachment. To be qualied, you
must understand the instructions in this manual, have training, and know the safety rules and regulations of
the job site.
Do not alter the physical, mechanical or hydraulic operation of the attachment. Doing so may cause a
dangerous situation for yourself and those around you and will void the warranty.
Do not attempt repairs you do not understand. If any questions arise regarding a safety or maintenance
procedure, contact Genesis or your Genesis dealer.
Read this entire manual. All personnel must understand the maintenance and safety procedures.
Use only Genesis supplied replacement parts. Genesis specically disclaims any responsibility for bodily
injury or attachment damage that results from the use of parts not sold or approved by Genesis.
Use extreme caution in handling. A fully assembled grapple can weigh over 2 tons. Sub-assemblies range
in weight from hundreds to thousands of pounds. To avoid bodily harm, use lifting and securing
mechanisms of adequate capacity to support loads. Seek the aid of an assistant as much as possible, and
always when handling heavier sub-assemblies.
The supplied safety bar (t79) MUST always be installed during transport,
repairs, dismounting and mounting to the carrier, changing the cutters and
all other routines at the attachment (GZ).
Follow the maintenance schedules in this manual. Extreme conditions may
dictate shorter maintenance intervals.
Do not exceed bolt torque specications.
Do not weld on structural components without consulting Genesis. Doing
so may cause structural failure and void the warranty.
Do not operate an attachment without the case-drain line properly installed if the attachment uses a rotation
system that requires a case drain. Doing so will cause immediate failure of the rotate motor and gearbox.
Do not work on the attachment before ensuring it will not move. Completely lower the boom to the ground
or a rest position and relieve hydraulic pressure.
Never operate poorly maintained equipment. When maintenance is required, repair or replace parts
immediately. When removing or installing mounting pins, beware of ying metal chips.
Do not operate under unsafe conditions. If an unsafe condition arises during operation, immediately shut
down the equipment and report the situation to the proper authority.
Pinch Points & Crush Points
During maintenance or servicing, lifting the attachment by the top pins may cause the attachment to
unexpectedly close, creating a crushing point. The grapple and tines must be properly blocked during
maintenance. With the grapple hydraulic system drained of oil, this condition may cause the unexpected
movement.
Performing Maintenance
Prior to maintenance, make sure the attachment is properly blocked to prevent accidental rotation. Do not
rely on the rotation motor or other rotation components to inhibit movement during maintenance or
servicing. Always perform appropriate Lockout/Tagout procedures.
MAINTENANCE SAFETY

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Do not work on any hydraulic lines or components while they are pressurized. Escaping hydraulic
uid can penetrate the skin, causing serious injury or death. Relieve pressure before performing
maintenance. Keep hands and body parts away from pin holes and nozzles,
which eject uids under high pressure. Use a piece of cardboard to search
for leaks.
If uid is injected into the skin, seek medical assistance immediately from a
doctor familiar with this type of injury.
Hydraulic 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 protective clothing and
safety equipment.
Remove paint before welding or heating. Hazardous fumes/dust can be generated
when paint is heated by welding, soldering or using a torch. Do all work outside or in a
well ventilated area and dispose of paint and solvent properly.
When sanding or grinding paint, avoid breathing the dust. Wear an approved
respirator. If you use solvent or paint stripper, remove stripper with soap and water
before welding. Remove solvent or paint stripper containers and other ammable
materials from area. Allow fumes to disperse at least 15 minutes before welding or
heating.
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.
See “Use Care with Hydraulic Fluid Pressure”, page 13
NOTICE
MAINTENANCE SAFETY

© 2022 Genesis Attachments, LLC Genesis GHG 16 - GHG 50 Handling Grapple 19
MAINTENANCE SAFETY
Maintenance of and repairs to the attachment should be performed by an experienced service
technician, thoroughly familiar with all standard practices and procedures, and most importantly,
all safety precautions. The following is a review of common standard practices to be followed
when working with hydraulic equipment and is not meant to be all-inclusive. Rather, this review is
presented as a reminder as to some of the unique characteristics of hydraulic equipment.
The prevention of foreign contaminant damage is critical when working with hydraulic equipment.
Protect exposed holes and parts to guard against entry of contaminants. Install metal or plastic
plugs/caps where applicable to prevent entry of debris into the hydraulic system.
Mark the location and position of mating parts as an aid to re-assembly. Mark corresponding parts
uniquely to reect their relationship, including proper location, position, orientation, and/or
alignment.
During assembly, observe all markings made during disassembly, and all corresponding features
of mating parts to ensure proper location, position, orientation, and alignment.
During disassembly of a sub-assembly, place removed components on a clean, dry surface, in
proper relative position as an aid in re-assembly.
Always inspect threaded areas on components. Repair or replace as required. Never apply
uncured thread adhesive to a fastener that has cured adhesive on it. Clean the fastener and the
threaded bore. A tap and die may be helpful for this task. Be sure to remove loose debris from the
threaded bore.
Use care to avoid scratches, nicks, dents or other damage to machined surfaces of mating
components.
When securing a component, always tighten cap screws gradually in an opposing pattern,
applying the specied torque.
Grease can be used to temporarily hold a part in place while the abutting part is placed into
position.
Always use common sense and exercise standard safety precautions when working with all tools
and equipment required to maintain, repair or troubleshoot the attachment.

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Performing scheduled maintenance will promote safe, reliable operation of your attachment. Use
maintenance procedures described in this manual. If you are not able to safely and competently
perform these procedures, have a Genesis dealer perform them.
Daily Inspection and Maintenance
• Grease all lubrication points. Use a lithium-based premium EP #2 in normal conditions
above 32° F (0° C). Use Grade 0 in temperatures below freezing. Do not use grease
containing Molybdenum (Moly). Genesis GLG-2™ anti-wear, extreme-pressure lithium
grease, PN 6302601, is recommended for all temperature conditions. See page 25 for
lubrication point locations.
• Check for oil leaks at the cylinder piston rod and all of the hoses and ttings.
• Check all fasteners for looseness. Retighten if necessary.
• Inspect all welds and repair as necessary.
• Inspect the hydraulic hoses for wear, damage or oil
leakage.
Arm Maintenance
Check for wear of the replaceable cutters (dg3 and dg4).
If the cutters no longer touch, they must be replaced. The
diagram below shows new (CY) and worn (CZ) cutters.
Frame Maintenance
Inspect frame welds for cracks or other deformities.
Frame Crack Repair
Drill a 3/16” (5 mm) hole through the plate at the end of the crack to prevent further crack
propagation.
Grind out the crack and weld as shown. Use AWS E7018 or equivalent
welding rod.
For plate sizes up to 3/4” (20 mm) thick, use the weld joint shown.
For plate sizes over 3/4" (20 mm) thick, use weld joint shown.
Grind weld ush as shown.
MAINTENANCE
Extreme operating conditions may require shortened
maintenance intervals.
NOTICE
22 - Direction of grinding
23 - Direction of principle stress