Reliable Equipment REL-3/4-IW Manual

1
OPERATORS’ GUIDE
WARNING
All information found in this guide must
be read and understood before use or
testing of this tool.
Failure to read and understand these warnings
and safe handling instructions could result in
severe personal injury and or death.
REL-3/4-IW Manual 01-14
REL - 3/4 - IW
HYDRAULIC IMPACT WRENCH
with 3/4” Square Drive
Shown with Optional
Low Pressure Couplers
Sealed for
UNDERWATER
applications
UW

2
CAUTION
The information in this manual is intended to guide the user in the
use and application of this tool. It is not intended as a substitute
for proper training and experience in safe work practices for this
type of equipment.
Consult your supervisor or safety personnel if you have any
questions regarding the safe operation of this tool.
DISTRIBUTED BY
REGISTRATION
UPON RECEIPT OF THIS TOOL, COMPLETE THE REGISTRATION BELOW.
COMPANY _____________________________________________________________
ADDRESS _____________________________________________________________
________________________________________________________________________
PHONE _______________________ FAX____________________________________
SERIAL NUMBER _______________________________________________________
DATE OF PURCHASE ___________________________________________________
DEALER NAME _________________________________________________________
THIS SYMBOL INDICATES ITEMS OF EXTREME IMPORTANCE.
Safety of user and others may be in jeopardy if these instructions
are not read and understood.

3
TABLE OF CONTENTS
DISTRIBUTION & REGISTRATTION...........................................2
TABLE OF CONTENTS ..............................................................3
GENERAL INFORMATION & LITERATURE................................4
TOOL & HYDRAULIC SOURCE SPECIFICATIONS....................5
GENERAL SAFETY INFORMATION........................................ 6-8
HOSES - Fittings, Connectctions, Installation...............................9
HOSES AND FITTINGS (General Information) ..........................10
OPERATIONAL SAFETY ...........................................................11
PRE-OPERATION & OPERATING INSTRUCTIONS .................12
DAILY MAINTENANCE & HYDRAULIC FLUIDS .......................13
PARTS & ASSEMBLY DRAWINGS...................................... 14-16
OPERATION & MAINTENANCE RECORDS....................... 17-18
CONTACT INFORMATION........................................................18
DESCRIPTION
The REL-3/4-IW, user friendly 3/4” square drive, hydraulic impact tool
that has broad applications for the utility, line construction and underwater
construction industries.
Delivering up to 1,200 ft.lbs. of torque, this tool is great for drilling, loosening
rusted hardwear, or tightening lag bolts and hardware with ease.
The well balanced tool feels comfortable and secure. The trigger is designed
to be responsive in a heavily gloved hand, enabling the user smooth, easily
controlled operation. A readily accessible reversing lever allows unconstrained
direction control. The handle is coated with a heat protecting material which
aids in handling the tool under adverse conditions.
If you have any questions regarding the information found
in this manual please contact RELIABLE EQUIPMENT at the address,
phone or fax numbers found on the back cover of this manual.

4
REL - 3/4 - IW
HYDRAULIC IMPACT WRENCH
with 3/4” Square Drive
Optional
Low Pressure
FF Couplers
Sealed for
UNDERWATER
applications
UP TO 1,2000 ft.lb. TORQUE
The REL-3/4-IW, user friendly 3/4” square
drive, hydraulic impact tool that has broad
applications for the utility, line construction
and underwater construction industries.
Delivering up to 1,200 ft.lbs. of torque, this
tool is great for drilling, loosening rusted
hardwear, or tightening lag bolts and
hardware with ease.
The well balanced tool feels comfortable
and secure. The trigger is designed to
be responsive in a heavily gloved hand,
enabling the user smooth, easily controlled
operation. A readily accessible reversing
lever allows unconstrained direction control.
The handle is coated with a heat protecting
material which aids in handling the tool
under adverse conditions.
UW
301 Ivyland Road • Warminster, PA 18974
Phone: [phone] • Fax: [phone]
Visit us on the web at www.Reliable-Equip.com
Forward
& Reverse

5
TOOL SPECIFICATIONS
Length ........................................................................................... 9.5” (24 cm)
Width ................................................................................................ 4” (10 cm)
Height wo Cplrs. ....................................................................11.25” (28.5 cm)
Weight ............................................................................................ 14 lb. (6 kg)
Output Torque ................................................... 250-1200 ft. lb.(340-1630 Nm)
NOTE: TORQUE MAY VARY WITH TRUCK PRESSURE AND HYDRAULIC FLOW
Output Speed .........................................................2,000 rpm at 5 gpm/19 lpm
Input speed ................................................................... 1,200 Impacts/Minute
Pressure/Return Ports ............................................................. 8 SAE O-ring
Drive ................................................................................... 3/4” Square Drive
Hyd. System Type .......................................................................Open Center
SPECIFICATIONS
Hydraulic Power Source
Flow: Min. .......................................................................4 gpm (5.1 lpm)
Recommended ............................................ 7-10 gpm (19-30 lpm)
Flow Range .................................................. 4-12 gpm (15-45 lpm)
Operating Pressure Min. ..................................................1,500 psi (105 bar)
Operating Pressure Max. .................................................2,000 psi (138 bar)
Pressure Relief Setting .............................................2,000 psi Max. (138 bar)
Back Pressure........................................................................200 psi (13.8bar)
Filtration ................................................................................ 10 microns Max.
Hydraulic System ........................................................................Open Center
Fluid Temperature, Max. .......................................................... 140O F (60O C)
* Checked with Flowmeter on Pressure Line
Relief Valve not to exceed 2,000 psi
WARNING

6
WARNING
BEFORE USING THIS TOOL, READ THE WARNINGS
and the recommended practices described in this manual.
Failure by the operator to read and fully understand these
warnings will leave this person unqualified to use and
operate this tool. Property damage, severe personal injury,
and/or death could result by not following these warnings.
Eye Protection
These warnings will appear in appropriate locations when they are pertinent to the
particular subject being shown. Read each one carefully and follow them strictly.
WARNING
Always wear eye protection to avoid
injury from flying debris or hydraulic
oil leaks. Failure to do so can result
in serious personal injury.
Hard Hat
WARNING
Always wear a hard hat to avoid injury
from falling debris. Failure to do so
can result in serious personal injury.
Hearing
Protection
WARNING
Always wear hearing protection,
to avoid hearing loss due to long
term exposure to high noise levels.
Foot
Protection
WARNING
Always wear foot protection.
Failure to do so can result in serious
personal injury.
Dust Mask
WARNING
Always wear a dust mask. Failure
to observe this warning may result
in serious health issues and/or
breathing difficulty.
WARNING
Protective
Gloves
Always wear protective gloves
Failure to do so can result in serious
personal injury.

7
WARNING
Safety
DO NOT attempt to make any changes to any of the component
parts or accessories when connected to the power source.
DO NOT adjust, inspect, or clean tool while the tool is connected
to the power source. The tool could accidentally start up and
cause serious injury.
DO NOT lock the tool in the On Position. In an emergency,
serious damage or injury could occur during the time required
to stop the tool.
Safe Operation & Care
USE THIS TOOL FOR ITS INTENDED PURPOSE ONLY
Any other use can result in injury or property damage.
INSPECT TOOL BEFORE USE. Replace any worn, damaged or
missing parts. A damaged or improperly assembled tool may
malfunction, injuring operator and/or nearby personnel.
INSPECT HYDRAULIC HOSES AND COUPLINGS before each use.
Repair or replace if any cracking, leakage, wear or damage is is
found. Worn or damaged hoses may fail resulting in personal
injury or property damage.
CLEAR WORK AREA of all bystanders and unnecessary personnel
before operating this tool.
KEEP ALL PARTS OF THE BODY AWAY FROM MOVING PARTS.
Failure to observe this warning could result in serious injury.
WARNING
Oil Injection Injury
Hydraulic oil or fluid under the skin is a serious injury. Oil under
pressure can penetrate the skin and may cause dismemberment
or loss of life. Seek medical assistance immediately if such an
injury should occur.
Always wear safety gloves, eye protection and all required
safety equipment when operating or handling this tool.
DO NOT use fingers or hands to attempt to locate a leak.
DO NOT handle hoses or couplers while system is pressurized.
NEVER open or service the system before depressurizing.
WARNING

8
Safe Handling
HYDRAULIC FLUID MAY CAUSE SKIN IRRITATION.
Prevent hydraulic fluid from making contact with skin.
IN THE EVENT OF SKIN CONTACT immediately wash thoroughly.
Failure to observe this warning could result in injury.
CAUTION
Vibration Hazard
Apply just enough pressure to control the tool operation. Applying
excess pressure to the tool may cause operator discomfort or
temporary numbness.
Failure to observe this warning could result in serious injury.
CAUTION
Electrical Shock Hazard
Use only certified nonconductive hoses and fittings. Always
wear and use the necessary clothing, equipment and safety
practices to protect against electrical shock. Failure to follow
these rules can result in serious personal injury or death.
WARNING
CAUTION
General Safety
Ensure that all fellow employees and bystanders are clear
and protected from possible injury caused by this tool or the
operations being performed. Persons in close proximity could
be injured and property damaged if the tool were to malfunction.
This tool should always be used within the limits and purposes
stated by the product manufacturer. Abuse or usage beyond the
manufacturers’ intended purposes could cause damage to the
tool and severe injury to the operator.
Burn Hazard
Do Not connect or disconnect tool, hoses or fittings while power
source is running or while hydraulic fluid is hot. Hot hydraulic
fluid may cause serious burns.
Failure to observe this warning could result in serious injury.
WARNING

9
HOSES AND FITTINGS
There exists the potential for shock in using anything other than
certified nonconductive hoses and hydraulic oil with dielectric
properties, when using system components near energized
electrical lines. Failure to recognize these conditions could
cause electrocution.
Hoses and fittings used with this tool must comply with S.A.E. J1273 which
covers recommended practice for selection, installation, and maintenance of hose and
hose assemblies. The correct hoses and fittings are available from your supplier.
WARNING: Failure to comply with these warnings could result in severe bodily injury.
WARNING
UNIT/HOSE CONNECTIONS
ALWAYS SHUT OFF pump/power source and move flow selector
to OFF before connecting or disconnecting system components.
ALWAYS DEPRESSURIZE hydraulic system before slowly
disconnecting this unit or any of the systems components.
ALWAYS TIGHTEN couplings completely. Loose or improperly
tightened couplings will not allow fluid to pass through the
hose creating a blockage in the supply or return line.
ALWAYS INSPECT HOSES AND CONNECTORS before connection
to tool. Replace or repair if any leakage is evident. Leakage is a sign
of deterioration in component parts. Worn or leaking parts must be
repaired or replaced, or tool damage or severe injury could result.
WARNING
HOSE INSTALLATION
Care must be taken to assure the correct connection of the hoses
to the pressure and return ports.
Connect the return hose to the return port on the power source,
then to the return port on the tool.
Connect the pressure hose to the pressure port on the tool, then
to the pressure port on the power source.
Operation with hydraulic flow reversed can cause malfunction.
Failure to fully comply can result in severe injury or death.
CAUTION

10
HOSES AND FITTINGS
Care must be exercised in the use of hose and fi ttings for use on hydraulic tools, especially
in confined areas. Any obstruction or abrasive surrounding could damage the hose and cause a
serious accident. Always use the recommended hose for the tool that is being used. Always consult
the dealer or distributor for the correct hoses and purchase from him to ensure, from a safety
standpoint that the materials used in the manufacture of the hoses is to the correct specification
for the application. Fittings must meet the standards established by the industry to adequately
assure safety. Poor quality or low rated fittings are not to be used. They invite a serious accident.
Length: Hose must be the correct length for the general use of the tool or for the specific function it is
to provide. Pressure surge is an important factor in the selection of hoses. The hose should be rated
above the expected surge pressure to ensure adequate safety. Hoses that are too long will have a
tendency to coil, kink, or move in multiple directions creating a safety hazard. Hoses that are too long
will rub or chafe against the ground or projecting objects, seriously shortening the life of the hose. It
may be advisable to carefully restrain a hose which is temporarily too long for the current application.
Pressure surge can cause whipping, and seriously damage the hose. Always keep the hose length
as short as possible for the operation which is it intended.
Size: The hose must be large enough to carry the pressurized flow of fluid to the end application
without creating undue heat generation or excessive turbulence. These factors could cause excessive
wear to the hose from any or all of the above reasons.
Pressure: Hose selection must be made so that the recommended maximum operating pressure is
greater than the system pressure. A surge or sudden drop in pressure will cause the hose to deteriorate
faster if the maximum pressure of the hose is significantly below the surge pressure. A hose with a
top rate of pressure as the line pressure of the installation is not an accepted safety practice. Always
err on the side of safety.
Temperature: Hose can be seriously damaged by passing over or near hot objects. Avoid any situation
that will heat the hose. Serious damage and/or failure will occur.
Unusual Applications: Careful thought and research should precede installation of hoses. Thorough
and protected testing, with appropriate safety guards, must be done to avoid injury before general use.
Connections: Hoses must have the proper end fittings in order to mate correctly with connectors.
Worn or damaged connectors and worn end fittings on the ends of the hose can cause a failure.
Pressure surge can cause a slow or sudden failure at the connection causing serious damage or injury.
Safety Check: Before using any installation, perform a thorough checkout to determine if any of the
above or unforeseen problems occur. Initial testing with safety guards is an invaluable safety precaution.
Always consult the distributor or manufacturer for the correct specifications regarding any of
the items discussed above. The correct hoses and fitting are available from your supplier.
There exists the potential for SHOCK in using anything other than certified non-conductive hoses
and hydraulic oil with dielectric properties when using system components near ENERGIZIZED
ELECTRICAL LINES. Failure to recognize these conditions could cause ELECTROCUTION.
Hoses and fittings used with this tool must comply with S.A.E.
J1273 recommended practice for selection, installation, and
maintenance of hose assemblies.
FAILURE TO COMPLY WITH THESE WARNINGS
COULD RESULT IN SEVERE BODILY INJURY.
WARNING

11
OPERATIONAL SAFETY WARNINGS
SHOCK, ELECTRICAL: This is a non-insulated tool. The need for keeping the tool dry
and cleen is imperative. Using this tool in an energized electrical environment could
be dangerous to the user. Failure to take this into account could result in electrocution.
NEVER CONNECT components or fittings to this unit unless power/pump source is turned
off or disconnected.
ALWAYS INSPECT hydraulic hoses and fittings for wear or deterioration every day. Replace
all parts that show signs of leaking, wear, or damage.
KEEP ALL PARTS OF THE BODY AWAY from moving parts of the tool when connected to
the power source for the tool.
MAKE SURE there is no person in close proximity to you or the tool who could be injured
by any operation being performed with the tool.
DO NOT overextend your position by overreaching or unbalancing the footing necessary to
maintain physical control of your body.
ALWAYS MAINTAIN a firm grip on the tool to avoid having the tool slip out of the hands
during an operation, causing a serious injury.
DO NOT side load or apply any type of indirect force.
Socket, bit, or adapter may be damaged creating a potentially dangerous situation.
DEPRESSURIZE THE UNIT before attempting to disassemble, connect, or disconnect any
of the components. Check oil temperature before disconnecting or disassembling this unit.
A serious burn could result from this exposure.
SEE A DOCTOR IMMEDIATELY, if a hot oil injury should occure.
SEE A DOCTOR IMMEDIATELY, if a pressurized oil injury should occure. Infection or serious
reaction could result from any hydraulic pressure injury.
USE THIS TOOL FOR THE MANUFACTURERS’ INTENDED PURPOSE ONLY.
USE ALL APPROPRIATE AND APPLICABLE PERSONAL SAFETY EQUIPMENT as required by
the operating company.
OBSERVE CLOSELY ALL SAFETY RULES FOR A PARTICULAR JOB CLASS
THE PURCHASER/OWNER of this unit must be certain that all the users of this unit are properly
trained in it’s use and in compliance with all appropriate industrial codes and/or practices.
FAILURE TO HEED THESE WARNINGS COULD RESULT IN
SERIOUS PERSONAL INJURY AND/OR PROPERTY DAMAGE.
WARNING
Operation/Safety methods may vary in accordance
with the working guidelines established by each utility
or contractor.
For your own safety, ensure that you fully comply with
all safe operation guidelines required by your employer.

12
PRE-OPERATION
NOTE: This tool is NOT intended as a substitue for a Hammer Drill.
If you are unsure of the proper application for this tool consult a supervisor/safety personnel.
INSTALL FITTINGS
NOTE: The direction of fl ow is indicated on the body of the tool. The tool is shipped from the
factory with the Female/Pressure, Male/Return unless specifi ed by the purchasing agent.
1. It is important to ensure that any couplers used are the correct type, and the flow
is going in the right direction. Although the tool may move with the pressure and
return lines ûˇckwards, the tool’s performance will be adversely affected and this may
create an unsafe condition in certain hydraulic systems.
IMPORTANT! The operator of the tool MUST know the type of hydraulic system on which the tool
is being used. This tool is factory confi gured to operate on Open Center Systems. Failure
to observe all warnings and instructions could result in property damage, or personal injury.
2. Ensure that the hydraulic power source is operating within the recommended range
for both Pressure of 1,500-2,000 psi (70-140 bar) and Flow of 4-12 gpm (15-45 lpm)
NOTE: Use of a calibrated Flow Meter and Pressure Gauge (REL-FPG) is recommended.
3. Ensure that the power source is equipped with a relieve valve set to 2,000 psi (140 bar)
The REL-3/4-IW is designed for 3/4” square drive impact sockets and accessories.
Adapters are available to accommodate a wide range of bits and accessories.
ENSURE THAT THE POWER SUPPLY IS OFF BEFORE CONNECTING THE TOOL.
4. Install the proper IMPACT socket or accessory for the intended application.
5. Squeeze the trigger to relieve any internal pressure.
6. Connect an appropriate set of hydraulic hoses to the tool beginning with the
return hose. (Refer to Hoses & Fittings on Page 9)
NOTE: Disconnect the return hose from the tool last to reduce trapped pressure.
OPERATION
USE ALL APPROPRIATE AND APPLICABLE PERSONAL SAFETY EQUIPMENT
AND SAFETY RULES AS REQUIRED BY THE OPERATING COMPANY.
1. Before placing a load on the tool, squeeze the trigger a few times to ensure the
wrench will start and stop correctly and the tool is turning in the right direction.
2. Turn on the hydraulic circuit at the source.
3. Engage the trigger to begin operation of the tool. The trigger is designed to make
it easy to “feather”. For safest operation, squeeze and release the trigger slowly.
4. When the tool is not in use, remove it from the power source.
WARNING
USE ONLY IMPACT STYLE BITS, SOCKETS AND ACCESSORIES
APPROVED FOR IMPACT USE. Bits, sockets, and accessories not
designed for impact applications can break and cause severe injury.
INSPECT BITS, SOCKETS AND ACCESSORIES BEFORE EACH USE
Discard damaged items. Damaged items can break and cause severe injury.

13
DAILY MAINTENANCE
The life, reliability, and safety of the tool is dependent on proper maintenance.
Post Operation Maintenance (Underwater Models & Applications ONLY)
The impact mechanism must be cleaned and lubricated with waterproof grease after
every day of use. The Impact Handle Body and motor assemblies are sealed and do
not require maintenance unless they are malfunctioning.
Clean & Inspect all surfaces including handle, trigger, chuck, main spool, reversing
spool, fittings, hoses and accessories. Inspect tool for corrosion, wear, and damage.
Worn or damaged parts can cause malfunction during operation.
Inspect for cracked hoses and leaking fittings.
All the above items must be replaced with new parts if signs of wear are evident.
Check fluid level of the power source reservoir frequently.
FLUID CONTAMINATION: Cover the ends of fittings with a dust cap when disconnected.
This will help keep the fluid from contamination.
MONTHLY MAINTENANCE: Inspect per Appendix A, SAE Standard J1273, 5/86 for
hose or fitting damage such as wear, cracks or leakage, replace the necessary parts.
NOTE: Keep Label Set clean and legible. Replace decals when necessary.
BEFORE USING THIS PRODUCT
READ THE SAFETY WARNINGS
and recommended practices described
in the manual. Failure by the operator to
read and fully understand the warnings
will leave this person unqualifi ed to use
and operate the tool.
Failure to observe all warnings and instructions could result
in property damage, severe personal injury, and/or death.
REL-SM
WARNING
HYDRAULIC FLUIDS
All hydraulic fluids that meet these listed specifications or the listed HTMA specifications may
be used for this tool.
S. U. S.
@ 100OF (38OC) ......................................................................... 140 TO 225
@ 210OF (99OC) ....................................................................... 40 minimum
FLASH POINT ...................................................... 340OF min. (170O C min.)
POUR POINT ......................................................... -30OF min. (-34OC min.)
SPECIFICATIONS
Flow Range: 4 - 12 gpm
Recommended 7-10 gpm
Recommended
Operating Pressure
1,500-2,000 psi

14
REL-3/4-IW
3/4” IMPACT
HANDLE BODY
DRAWING #1

15
BALLOON PART DESCRIPTION ...................... QTY.
1 R1898006 FULL BODY VALVE .................. 1
2 R1891025 DRIVE GEAR ........................... 1
3 R1891024 STUD DRIVEN GEAR .............. 1
4 R1898008 FULL DRIVEN GEAR ............... 1
5 R1891015 COVER ..................................... 1
6 R1891020 BUSH ADJUSTING SCREW .... 1
7 R1891019 ADJUSTING SCREW ............... 1
8 R1891017 NUT VALVE .............................. 1
9 R1891018 TRIGGER PIN .......................... 1
10 R1891021 SUPPORT SPRING.................. 1
11 R1891023 COVER SHAFT SEAL .............. 1
12 R1891022 PIN 1
13 R4550430 RETAINING RING .................... 1
14 R1891035 RETAINING RING .................... 1
15 R0009039 REVERSE LEVER .................... 1
16 R1891026 NUT .......................................... 1
17 R1891002 TRIGGER ................................. 1
18 R1891041 SCREW .................................... 1
19 R1891043 NUT .......................................... 1
20 R1891040 WASHER .................................. 8
21 R1891039 SCREW .................................... 8
22 R1891006 BUSHING ................................. 1
23 R1891001 SPRING .................................... 1
24 R1891000 SPRING .................................... 1
25 R1891042 WASHER .................................. 2
26 R1891032 WIPER ...................................... 1
27 R1891030 O-RING ..................................... 1
28 R1891029 BACK-UP RING ........................ 1
29 R1891038 SCREW .................................... 1
30 R1891033 O-0RING ................................... 1
31 R1891034 O-RING ..................................... 1
32 R1891028 O-RING ..................................... 1
33 R1891027 O-RING ..................................... 1
34 R1891031 O-RING ..................................... 1
35 R1891037 BACK-UP RING ........................ 2
36 R1891036 O-RING ..................................... 2
REL-3/4-IW PARTS LIST
HANDLE ASSEMBLY
DRAWING #2
DRAWING #3
DRAWING #4

16
REL-3/4-IW
NOSE ASSEMBLY
DRAWING # 5
R260-UW2
BALLOON PART DESCRIPTION ...................... QTY.
1 260-A703 HAMMER FRAME ........................1
2 260-724 HAMMER .....................................1
3 2910-704 HAMMER PIN .............................. 1
4 260-726B ANVIL ...........................................1
5 260-918 THRUST BEARING RETAINER ..1
6 26-=695NTR NEEDLE THRUST RACE ............ 1
7 TR260 THRUST RACE BEARING ..........1
8 RR260 RETAINING RING ........................ 1
9 260-729NTW NEEDLE THRUST WASHER .......1
10 260-695NTR NEEDLE THRUST RACE ............1
11 260-A727UW HAMMER CASE ASSEMBLY ......1
(Includes: HHW1 & 260-641UW)
12 HHW1-216 O-RING ........................................1
13 260-641UW HAMMER CASE BUSHING .........1
14 R00BR-042 O-RING ........................................ 1
15 260U-58 LOCKWASHER ............................4
16 260-490A SCREW ........................................ 4
PARTS LIST

17
Date Depth Operation Service Inspection
Underwater Operation/Service Records
If you have any questions regarding the information
found in this manual please contact RELIABLE EQUIPMENT at the address,
phone or fax numbers shown below.
NOTES

18
Date Parts or Service Required
Maintenance Records
301 Ivyland Road • Warminster, PA 18974
Phone: [phone] • Fax: [phone]
Visit us on the web at www.Reliable-Equip.com
If you have any questions regarding the information found in
this manual please contact RELIABLE EQUIPMENT at the address,
phone or fax numbers shown below.