Werk-Brau EZG Series User manual

EZG Series
HYDRAULIC and Rigid
PRODUCT MANUAL
AND INSTALLATION KIT
Werk-Brau Co., Inc.
P.O. Box 545 Findlay, Ohio 45839-0545 U.S.A.
Phone [phone]
Fax [phone]
Visit Werk-Brau at: www.werk-brau.com
Serial No:
Model No:
Date Manufactured:

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INSTALLATION AND MAINTENACE INSTRUCTIONS
EZG-SERIES
Created: 7/22/13 Document: Page 2 OF 10
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INSTALLATION AND MAINTENANCE
INSTRUCTIONS
EZG
I N T R O D U C T I O N
You have received a high quality, extremely versatile
attachment that will increase your backhoe or
excavator capability. This product will help you
manipulate material and debris. With inspections and
proper care your EZG will last you a long time in a
rugged environment. EZG’s are also called thumbs,
clamps, and grips.
NOTE: Pictures and diagrams my not be your exact Werk-Brau attachment. The
pictures represent an action or a setup required for installation and operation.
Torque Specs
Torque Values Ft. Lbs.
Dash Tube Thread 37° Flare Straight Thread
Size
O.D.
(Ref) Size Ft. Lbs Nm. Ft. Lbs. Nm.
4 1/4 7/16-20 10-12 14-16 15-19 20-25
5 5/16 1/2-20 13-16 18-21 20-25 27-33
6 3/8 9/16-18 20-25 27-33 32-40 43-54
8 1/2 3/4-16 34-42 46-56 54-67 73-90
10 5/8 7/8-14 46-58 62-78 74-92 100-124
12 3/4 1-1/16-12 64-80 87-108 102-128 138-173
14 7/8 1-3/16-12 80-100 109-135 128-160 173-216
16 1 1-5/16-12 97-117 131-158 150-187 203-253
20 1 1/4 1-5/8-12 145-165 197-223 227-264 308-357
24 1 1/2 1-7/8-12 230-250 312-338 363-400 492-542
*Apply enough pipe sealer to contact all threads.
** Do not use that excess will squeeze into the hydraulic lines.

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SAFETY
EZG-SERIES
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SAFETY STATEMENTS
Danger tags are used in major hazard situations where an immediate hazard presents a
threat of death or serious injury to operator and anyone about.
Warning tags are used to represent a hazard level between “Caution” and “Danger”,
instead of the required “Caution” tag, provided that they have a signal word of “Warning,” an
appropriate major message.
Caution tags are used in minor hazard situations where a non-immediate or potential
hazard or unsafe practice presents a lesser threat of injury.
A notice label is used where equipment or property damage could result if the instructions
are not followed properly.
This symbol by itself or used with a safety signal word throughout this manual is used to
call your attention to instructions involving your personal safety or the safety of others. Failure
to follow these instructions can result in injury or death.
GENERAL SAFETY PRECAUTIONS
READ MANUAL PRIOR TO INSTALLATION
Improper installation, operation, or maintenance of this equipment could result in serious
injury or death. Operators and maintenance personnel should read this manual as well as all manuals
related to this equipment and the operating machine thoroughly before beginning installation,
operation, or maintenance. FOLLOW ALL SAFETY INSTRUCTIONS IN THIS MANUAL AND THE
OPERATING MACHINES MANUAL.
READ AND UNDERSTAND ALL SAFETY STATEMENTS
Read all safety decals and safety statements in all manuals prior to operating or working on
this equipment. Know and obey all OSHA regulations, local laws and other professional guidelines for
your operation. Know and follow good work practices when assembling, maintaining, repairing,
mounting, removing or operating this equipment.
KNOW YOUR EQUIPMENT
Know your equipment’s capabilities, dimensions and operations before operating.
Visually inspect your equipment before you start, and never operate equipment that is not
in proper working order with all safety devices intact. Check all hardware to assure it is
tight. Make certain that all locking pins, latches, and connection devices are properly installed and
secured. Remove and replace any damaged, fatigued or excessively worn parts. Make certain all
safety decals are in place and are legible. Keep decals clean, and replace them if they become worn
and hard to read.
PROTECT AGAINST FLYING DEBRIS
Always wear proper safety glasses, goggles with a face shield when driving pins in or out or
when any operation causes dust, flying debris, or any other hazardous material.
LOWER OR SUPPORT RAISED EQUIPMENT
Do not work under raised booms without supporting them. Do not use support material
made of concrete blocks, logs, buckets, barrels or any other material that could suddenly collapse or
shift positions. Make sure support material is solid, not decayed, warped, twisted, or tapered. Lower
the boom(s) to ground level or onto block(s). Lower the boom(s) and attachment(s) to the ground
before leaving the cab or operator’s station.

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GENERAL SAFETY PRECAUTIONS - CONTINUED
USE CARE WITH HYDRAULIC FLUID PRESSURE
Hydraulic fluid under pressure can penetrate the skin and cause serious injury or death.
Hydraulic leaks under pressure may not be visible. Before connecting or disconnecting
hydraulic hoses, read your operating machines operator’s manual for detailed instructions on
connecting and disconnecting hydraulic hoses or fittings.
• Keep unprotected body parts, such as face, eyes, and arms as far away as possible from a
suspected leak. Flesh injected with hydraulic fluid may develop gangrene or other permanent
disabilities. Wear safety glasses, protective clothing, and use a sound piece of cardboard or wood
when searching for hydraulic leaks. DO NOT USE YOUR HANDS!
• If injured by injected fluid, see a doctor at once. If your doctor is not familiar with this type of injury,
ask him to research immediately to determine proper treatment.
DO NOT MODIFY MACHINE OR ATTACHMENTS
Modifications may weaken the integrity of the attachment and may impair the function, safety,
life and performance of the attachment. When making repairs, use only the manufacturer’s genuine
parts, following authorized instructions. Other parts may be substandard in fit and quality. For loaders,
never modify any ROPS (Roll Over Protection System) equipment or device.
!!!Any modifications must be authorized in writing by the Werk-Brau or the manufacturer!!!
SAFELY OPERATE EQUIPMENT
Do not operate equipment until you are completely trained by a qualified operator in how to
use the controls, know its capabilities, dimensions, and all safety requirements. See your
operating machines manual for these instructions.
• Keep all step plates, grab bars, pedals, and controls free of dirt, grease, debris, and oil.
• Be sure that all bystanders are out of harms way when operating.
• Do not allow riders on the attachment or operating machine
• Do not operate the equipment from anywhere other than the correct operators position.
• Never leave equipment unattended with the engine running or with this attachment in a raised
position.
• Do not alter or remove any safety feature from the operating machine or this attachment.
• Know your work site safety rules as well as traffic rules and flow. When in doubt on any safety issue,
contact your supervisor or safety coordinator for an explanation.
SAFELY MAINTAIN AND REPAIR EQUIPMENT
• Do not wear loose clothing, or any accessories that can catch in moving parts. If you have
long hair, cover or secure it so that it does not become entangled in the equipment.
• Work on a level surface in a well-lit area.
• Use properly grounded electrical outlets and tools.
• Use the correct tool for the job at hand. Make sure tools are in good condition.
• Wear all protective equipment specified by the tool manufacturer.

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OPERATING PRECAUTIONS
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OPERATING PRECAUTIONS
DO NOT IMPROPERLY USE GRIP
This EZG is designed to grab objects and debris and not for any other use.
BE AWARE OF SURROUNDING UTILITIES
Operator must be aware of all utility line and overhead electrical lines. Operations must be
able to clear all lines safely.
BE AWARE OF OVERHEAD DANGER
Operator must be aware of all possible overhead dangers that are within the range of motion of
the operating machine.
DO NOT OPERATE WITH A LOOSE ATTACHMENT
Visually check the coupler to verify attachments are secure and lock is fully engaged and that
the center to center of the attachment matches the up with the coupler.
PINCH POINTS
Personal injury could result from the careless misuse of this coupler. Keep hands and body
parts clear of the coupler when it’s in the process of hooking up to an attachment. Be sure the
machine is off and the attachment is on the ground prior to making adjustments.
WELDING INSTRUCTIONS
All Welding to be done by a Certified Welder!
Dipper Mounting Bracket & Return Stop
a.) Disconnect battery before welding.
b.) Use a low hydrogen electrode.
c.) Clean weld area – weld completely around bracket.
d.) Weld a 3/8 fillet on the sides of the bracket to the stick.
NOTE: Some models include side plates which transfer the loads onto the
stick. See the enclosed illustrations for these models (Case 580 D & E, and all
Extend-a-hoes). The Case 580K,L,& N requires a special mount due to dipper
material. See the enclosed instructions for the installation of this mount.
DO NOT WELD ANYTHING INPLACE BEFORE CHECKING ROTATION
AND CLEARANCES!!!!
Components List
See separate parts breakdown

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HYDRAULIC INSTALLATION
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Hydraulics Chart
GRIP PART
NO.
CYLINDER
BORE PORT SIZE MAX PRESSURE FLOW RATE
EZG-040 2” 6 SAE O-RING 2,500 PSI 12-15 GPM
EZG-050 2 ½” 10 SAE O-RING 2,500 PSI 12-15 GPM
EZG-100 3 ½” 10 SAE O-RING 2,500 PSI 12-15 GPM
EZG-200 3 ½” 10 SAE O-RING 2,500 PSI 12-15 GPM
EZG-300 4” 12 SAE O-RING 2,500 PSI 16-20 GPM
EZG-400 4” 12 SAE O-RING 2,500 PSI 16-20 GPM
EZG-500 5” 12 SAE O-RING 2,500 PSI 25-30 GPM
EZG-600 6” 12 SAE O-RING 2,500 PSI 40-50 GPM
Rigid Thumb Note
If you have a RIGID THUMB (not Hydraulic), follow all the same steps less hydraulic
portion. Install with Rigid Stick in Completely retracted (shortest) position.
Note: Rigid Sticks and Cylinders are interchangeable.
INSTALLATION
1. Unpack the EZ Grip from the shipping skid.
2. Lower the bucket or coupler to the ground and remove the front attaching pin.
Align the pivot bores of the EZ Grip with the bores through the bucket and
stick, insert the new pivot pin supplied. Install the retaining device.

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3. Position the rod end of the EZ Grip cylinder into the EZ Grip and install the
attaching pin supplied; be sure to orientate the cylinder so that the manifold
tube going to the rod end port is up. Retain the pin with the roll pin supplied.
4. Install the dipper/stick mounting bracket onto the base end of the cylinder with
the pin and roll pin supplied.

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5. Extend the cylinder by ¼” so that the cylinder doesn’t bottom out when the
grip is retracted. For Rigid manual arm put in shortest position.
6. Next, with the aid of the bucket and a block of wood positioned between the
grip and the bucket, rotate the grip and cylinder assembly back to the stick,
YOU MAY NEED TO PUSH THUMB AND CYLINDER AGAINST STICK.
CYLINDER SHOULD BE ALMOST PARARELL TO STICK. Grind paint from
area where the mount is to be welded and where grip would hit on stick (just
up from the end of the stick).

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7. Now, lift the cylinder upward until the mount bracket is firmly against the
bottom of the stick. A wedge can be lodged between the grip and the cylinder
to hold the mount snuggly against the stick. CYLINDER SHOULD BE
ALMOST PARALLEL TO THE STICK.
8. Disconnect battery before doing any welding. Center the mount bracket on
the stick, re-check clearances at the grip and tack weld the mount bracket to
the stick, on the sides only. NOTE: Finish welding bracket after the
hydraulics are connected and the grip is functioning. (See Welding
Instructions)
9. Locate the grip stop. Identify where grip is hitting on stick and mark, when
Grip is up against stick. Weld stop along sides only into place.
10.Locate bolt or pivot pin retaining rod and install.
a. Pivot pin with not cross hole: A retaining rod should be welded to the
coupler, if no coupler then the bucket. (This piece is a round simple
bar)
b. Pivot Pin with a cross hole: Bolt should be installed in coupler or
bucket pin retainer
c. NOTE: Thumb pin should not spin with thumb! Should be retained
to bucket or coupler
11.Install the two “caution” decals in clear visibility of the operator.
You are now ready to install the hydraulics to the EZ Grip. If you are using an auxiliary
hydraulic system supplied by the machine’s manufacturer, follow their instructions carefully.
Remember to limit the working pressure to a specified maximum pressure.

10 INST-EZG-D
HYDRAULIC INSTALLATION DOUBLE CHECK
EZG-SERIES
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HYDRAULIC INSTALLATION
!!DOUBLE CHECK!!
Be sure to, double check that all hydraulic lines and fittings are tight and
secure before starting the machine.
In the event of a hydraulic problem or failure, discontinue the use of
the attachment immediately!!
MAINTENANCE
Follow the list below should be followed in order to lengthen the life of your WERK-
BRAU product.
PROCEDURE INTERVAL NOTE
GREASE FITTINGS WEEKLY
CHECK FOR HYDRAULIC LEAKS DAILY
INSPECT GRIP ASSEMBLY FOR
DAMAGE (CRACKS, STRESS) DAILY
TROUBLE SHOOTING
Problem #1
EZG tip radius does not line up with bucket.
Corrective Action
A.) Verify that pivot pin is not through the link hole, and is in stick pin hole.
B.) Check to see if T.R. was ordered correct for attachments
Problem # 2
Pivot pin is squeaking or even prematurely wearing.
Corrective action
A.) Make sure that pin is greased either through stick or pivot pin.
B.) Verify that the pivot pin is retained and not spinning.
1-800-537-9561
Ask for Installation Assistance
Monday through Friday - 8:00 a.m. to 5:00 p.m. EST
Revision Record (Original is revision 1)
Revision Date # Description
A 11/5/09 1 Added torque specs
B 2/3/11 6 Cert Welder and Removed
components list
C 7/22/13 All Combined R and H, general clean
D 9/19/13 All Changed wording and added PP rod
info

P.O. Box 545 • Findlay, OH 45839 • USA • Tel: [phone] x 104 • Fax: [phone] • www.werk-brau.com
Cascade and Werk-Brau are registered trademarks of Cascade Corporation.
© Werk-Brau Co., Inc. 2013. All rights reserved.