Stanley IW16 Series User manual

© 2014 STANLEY Black & Decker, Inc.
New Britain, CT 06053
U.S.A.
66174 9/2018 Ver 29
USER MANUAL
Safety, Operation and Maintenance
IW16
HYDRAULIC
IMPACT WRENCH

2 ► IW16 User Manual
DECLARATION OF CONFORMITY
DECLARATION OF CONFORMITY
ÜBEREINSTIMMUNGS-ERKLARUNG
DECLARATION DE CONFORMITE CEE
DECLARACION DE CONFORMIDAD
DICHIARAZIONE DI CONFORMITA
______________________________________________________________________
I, the undersigned:
Ich, der Unterzeichnende:
Je soussigné:
El abajo firmante:
lo sottoscritto:
Nuerenberg, David
Surname and First names/Familiennname und Vornamen/Nom et prénom/Nombre y apellido/Cognome e nome
hereby declare that the equipment specified hereunder:
bestätige hiermit, daß erklaren Produkt genannten Werk oder Gerät:
déclare que l’équipement visé ci-dessous:
Por la presente declaro que el equipo se especifica a continuación:
Dichiaro che le apparecchiature specificate di seguito:
1. Category: Hydraulic Hand-Held Impact Wrench
Kategorie:
Catégorie:
Categoria:
Categoria:
2. Make/Marke/Marque/Marca/Marca STANLEY
3. Type/Typ/Type/Tipo/Tipo: IW16150, IW16150S, IW16350
4. Serial number of equipment:
Seriennummer des Geräts:
Numéro de série de l’équipement:
Numero de serie del equipo:
Matricola dell´attrezzatura:
ALL MODELS NOTED ABOVE FROM
SERIAL NUMBER (042312097)and Above
Has been manufactured in conformity with
Wurde hergestellt in Übereinstimmung mit
Est fabriqué conformément
Ha sido fabricado de acuerdo con
E’ stata costruita in conformitá con
Directive/Standards
Richtlinie/Standards
Directives/Normes
Directriz/Los Normas
Direttiva/Norme
No.
Nr
Numéro
No
n.
Approved body
Prüfung durch
Organisme agréé
Aprobado
Collaudato
EN ISO
EN ISO
EN ISO
EN ISO
EN ISO
Machinery Directive
28927-9
3744 (15744)
11148-69, Cl. 5.4
11148-6, Cl. 5.5
13732-1
2006/42/EC:2006
Self
Self
Self
Self
Self
Self
5. Special Provisions: None
Spezielle Bestimmungen:
Dispositions particulières:
Provisiones especiales:
Disposizioni speciali:
6. Representative in the Union: Patrick Vervier,Stanley Dubuis 17-19, rue Jules Berthonneau-BP 3406 41034 Blois Cedex, France.
Vertreter in der Union/Représentant dans l’union/Representante en la Union/Rappresentante presso l’Unione
Done at/Ort/Fait à/Dado en/Fatto a STANLEY Infrastructure, Milwaukie, Oregon USA Date/Datum/le/Fecha/Data 4/25/2018
Signature/Unterschrift/Signature/Firma/Firma
Position/Position/Fonction/Cargo/Posizione North America Quality Manager

IW16 User Manual ◄ 3
TABLE OF CONTENTS
SAFETY SYMBOLS.................................................................................................................................................4
SAFETY PRECAUTIONS .......................................................................................................................................5
TOOL STICKERS & TAGS ......................................................................................................................................7
HOSE TYPES ..........................................................................................................................................................8
HOSE RECOMMENDATIONS................................................................................................................................9
HTMA / EHTMA REQUIREMENTS ......................................................................................................................10
OPERATION .......................................................................................................................................................... 11
TOOL PROTECTION & CARE..............................................................................................................................14
TROUBLESHOOTING ..........................................................................................................................................15
SPECIFICATIONS .................................................................................................................................................16
ACCESSORIES .....................................................................................................................................................17
IW16 PARTS ILLUSTRATION...............................................................................................................................18
IW16 PARTS LIST..................................................................................................................................................19
VALVE HANDLE CHANGE NOTICE ....................................................................................................................20
IW16 UPRIGHT HANDLE PARTS ........................................................................................................................21
UNDERWATER TOOLS DEPTH GUIDELINE.....................................................................................................22
SERVICING: This manual contains safety, operation and routine maintenance instructions. STANLEY Infrastructure
recommends that servicing of hydraulic tools, other than routine maintenance, must be performed by an authorized
and certied dealer. Please read the following warning.
To ll out a product warranty validation form, and for information on your warranty,
visit www.stanleyinfrastructure.com and select the Company tab > Warranty.
Note: The warranty validation record must be submitted to validate the warranty.
SERIOUS INJURY OR DEATH COULD RESULT FROM THE IMPROPER REPAIR OR
SERVICE OF THIS TOOL.
REPAIRS AND / OR SERVICE TO THIS TOOL MUST ONLY BE DONE BY AN
AUTHORIZED AND CERTIFIED DEALER.
For the nearest certied dealer, call STANLEY Infrastructure at [phone] and ask for a Customer Service Representative.

4 ► IW16 User Manual
Always observe safety symbols. They are included for your safety and for the protection of the tool.
LOCAL SAFETY REGULATIONS
Enter any local safety regulations here. Keep these instructions in an area accessible to the operator and
maintenance personnel.
Safety symbols and signal words, as shown below, are used to emphasize all operator, maintenance and repair
actions which, if not strictly followed, could result in a life-threatening situation, bodily injury or damage to equipment.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible
injury or death.
This safety alert and signal word indicates an imminently hazardous situation
which, if not avoided, will result in death or serious injury.
This safety alert and signal word indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This safety alert and signal word indicates a potentially hazardous situation
which, if not avoided, could result in death or serious injury.
This signal word indicates a potentially hazardous situation which, if not avoided,
may result in property damage.
This signal word indicates a situation which, if not avoided, will result in damage
to the equipment.
This signal word indicates a situation which, if not avoided, may result in damage
to the equipment.
SAFETY SYMBOLS
Tool operators and maintenance personnel must always comply with the safety precautions given in this manual
and on the stickers and tags attached to the tool and hose. These precautions are given for your safety. Review
them carefully before operating the tool and before performing general maintenance or repairs.
Supervising personnel should develop additional precautions relating to the specic work area and local safety
regulations. If so, place the added precautions in the space provided in this manual.
The model IW16 Hydraulic Impact Wrench will provide safe and dependable service if operated in accordance with
the instructions given in this manual. Read and understand this manual and any stickers and tags attached to the
tool and hose before operation.
Failure to do so could result in personal injury or equipment damage.

IW16 User Manual ◄ 5
• The operator must start in a work area without
bystanders. Flying debris can cause serious injury.
• Do not operate the tool unless thoroughly trained
or under the supervision of an instructor. Establish
a training program for all operators to ensure safe
operation.
• Always wear safety equipment such as goggles,
gloves, ear, head and breathing protection and
safety shoes at all times when operating the tool.
Use gloves and aprons when necessary.
• Inspect tool daily for loose fasteners, missing parts
and leakage. Have tool repaired if necessary.
• The operator must be familiar with all prohibited work
areas such as excessive slopes and dangerous
terrain conditions.
• Operators and maintenance personnel shall be able
to physically handle the bulk, weight and power of
the tool.
• Maintain proper footing and balance at all times and
do not overreach.
• Do not inspect or clean the tool while the hydraulic
power source is connected. Accidental engagement
of the tool can cause serious injury. Be observant of
hydraulic and water hose lying about the work area,
they can be a tripping hazard.
• Do not use in conned spaces and beware of
crushing hands between the tool and the workpiece,
especially when unscrewing.
• Always connect hoses to the tool hose couplers
before energizing the hydraulic power source. Be
sure all hose connections are tight and are in good
condition.
• Do not operate the tool at oil temperatures above
140 °F/60 °C. Operation at higher temperatures can
cause higher than normal temperatures at the tool
which can result in operator discomfort.
• When using a rotary percussive tool to perform
work related activities, the operator can experience
discomfort in the hands, arms, shoulders, neck or
other parts of the body.
• If you experience numbness, tingling, pain or whit-
ening of the skin in your ngers or hands, stop using
the tool. Tell your employer and consult a physician.
• Check for vibration level before each service. If you
feel a higher than normal vibration, contact your
STANLEY dealer for repair.
• Do not operate a damaged, improperly adjusted or
incompletely assembled impact wrench.
• Never wear loose clothing that can become
entangled in the working parts of the tool.
• Keep all parts of your body away from the rotating
parts. Long hair or loose clothing can become drawn
into rotating components.
• Do not hold the drive, socket or drive extension
during operation. This is an entanglement hazard.
• Rotating drive sockets and drive extensions can
easily entangle rubber-coated or metal reinforced
gloves.
• Always use accessories that conform to the
specications given in “Operation” on page 11.
• Do not reverse impact wrench rotation direction by
changing uid ow direction.
• Release the trigger if the power supply has been
interrupted.
• When working near electrical conductors, always
assume that all conductors are energized and that
insulation, clothing and hoses can conduct electricity.
Use hose labeled and certied as non-conductive.
• To avoid personal injury or equipment damage,
all tool repair, maintenance and service must only
be performed by authorized and properly trained
personnel.
• Inspect the tool before each use and ensure all de-
cals are legible. Contact STANLEY if replacements
are needed.
• Serious injury or death could result from a tool or
accessories dropped from an elevated height. Flying
debris can cause serious injury.
• Warning: Hydraulic uid under pressure could cause
skin injection injury. If you are injured by hydraulic
uid, get medical attention immediately.
• During operation do not contact the impact
mechanism, accessories or hardware as they can
become very hot, use your Personal Protection
Equipment (PPE).
• WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities contains chemicals known to the State
of California to cause cancer, birth defects or
other reproductive harm. Some examples of these
chemicals are:
• Lead from lead-based paints,
• crystalline silica from bricks and cement
and other masonry products, and
• arsenic and chromium from chemically-
treated lumber.
SAFETY PRECAUTIONS

6 ► IW16 User Manual
Your risk from these exposures varies, depending
on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well
ventilated area, and work with approved safety
equipment, such as those dust masks that are
specially designed to lter out microscopic particles.
Protect yourself and those around you. Research
and understand the materials you are cutting.
Follow correct safety procedures and comply with
all applicable national, state or provisional health
and safety regulations relating to them, including,
if appropriate arranging for the safe disposal of the
materials by a qualied person.
SAFETY PRECAUTIONS

IW16 User Manual ◄ 7
The safety tag (P/N 15875) at right is attached to the tool
when shipped from the factory. Read and understand the
safety instructions listed on this tag before removal. We
suggest you retain this tag and attach it to the tool when not
in use.
NOTE:
THE INFORMATION LISTED ON THE STICKERS
SHOWN, MUST BE LEGIBLE AT ALL TIMES.
REPLACE DECALS IF THEY BECOME WORN OR
DAMAGED. REPLACEMENTS ARE AVAILABLE FROM
YOUR LOCAL STANLEY DISTRIBUTOR.
28323 CE DECAL
(CE)
11207 CIRCUIT
TYPE D DECAL (CE)
D
30 LPM @ 138 BAR
EHTMA CATEGORY
73680 RAILROAD
HELP DESK DECAL
12412 DANGER DECAL
74692 IW16 NAME TAG (US & CE)
66305 SOUND
POWER LEVEL
DECAL (CE)
30136
ROTATION DIRECTION
DECAL
09612 GPM DECAL
SAFETY TAG P/N 15875 (shown smaller then actual size)
28788
MANUAL DECAL
(CE)
12535 CIRCUIT
TYPE E DECAL (CE)
TOOL STICKERS & TAGS
Note: The serial number and year of manufacture are stamped on the top of the tool motor housing.

8 ► IW16 User Manual
The rated working pressure of the hydraulic hose must be equal to or higher than the relief valve setting on the
hydraulic system. There are three types of hydraulic hose that meet this requirement and are authorized for use with
STANLEY hydraulic tools. They are:
Certi ed non-conductive — constructed of thermoplastic or synthetic rubber inner tube, synthetic  ber braid
reinforcement, and weather resistant thermoplastic or synthetic rubber cover. Hose labeled certifi ed non-
conductive is the only hose authorized for use near electrical conductors.
Wire-braided (conductive) — constructed of synthetic rubber inner tube, single or double wire braid
reinforcement, and weather resistant synthetic rubber cover. This hose is conductive and must never be used
near electrical conductors.
Fabric-braided (not certi ed or labeled non-conductive) — constructed of thermoplastic or synthetic rubber
inner tube, synthetic  ber braid reinforcement, and weather resistant thermoplastic or synthetic rubber cover.
This hose is not certifi ed non-conductive and must never be used near electrical conductors.
HOSE SAFETY TAGS
To help ensure your safety, the following DANGER tags are attached to all hose purchased from STANLEY. DO
NOT REMOVE THESE TAGS.
If the information on a tag is illegible because of wear or damage, replace the tag immediately. A new tag may be
obtained from your STANLEY Distributor.
THE TAG SHOWN BELOW IS ATTACHED TO “CERTIFIED NON-CONDUCTIVE” HOSE
THE TAG SHOWN BELOW IS ATTACHED TO “CONDUCTIVE” HOSE.
(Shown smaller than actual size)
SIDE 1
DANGER
1. FAILURE TO USE HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
WHEN USING HYDRAULIC TOOLS ON OR NEAR ELECTRIC LINES MAY RESULT IN
DEATH OR SERIOUS INJURY.
FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND
ELECTRIC LINES.
2. BEFORE USING HYDRAULIC HOSE LABELED AND CERTIFIED AS NON-CONDUCTIVE
ON OR NEAR ELECTRIC LINES. WIPE THE ENTIRE LENGTH OF THE HOSEAND FITTING
WITH A CLEAN DRY ABSORBENT CLOTH TO REMOVE DIRTAND MOISTURE AND TEST
HOSE FOR MAXIMUM ALLOWABLE CURRENT LEAKAGE IN ACCORDANCE WITH SAFETY
DEPARTMENT INSTRUCTIONS.
SEE OTHER SIDE
SIDE 2
DO NOT REMOVE THIS TAG
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE
OR HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE.
KEEP HOSE AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT
CONTACT DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION
AND SEVERE PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, ABRASION, CUTTING, OR
CONTACT WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT
USE HOSE TO PULL OR LIFT TOOLS, POWER UNITS, ETC.
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAM-
AGE TO COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE
IMMEDIATELY. NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
SEE OTHER SIDE
DANGER
DO NOT REMOVE THIS TAG
DANGER
(Shown smaller than actual size)
SIDE 2
5. CHECK ENTIRE HOSE FOR CUTS CRACKS LEAKS ABRASIONS, BULGES, OR DAMAGE TO
COUPLINGS IF ANY OF THESE CONDITIONS EXIST, REPLACE THE HOSE IMMEDIATELY.
NEVER USE TAPE OR ANY DEVICE TO ATTEMPT TO MEND THE HOSE.
6. AFTER EACH USE STORE IN A CLEAN DRY AREA.
DANGER
DO NOT REMOVE THIS TAG
DANGER
SIDE 1
1. DO NOT USE THIS HYDRAULIC HOSE ON OR NEAR ELECTRIC LINES. THIS HOSE IS
NOT LABELED OR CERTIFIED AS NON-CONDUCTIVE. USING THIS HOSE ON OR NEAR
ELECTRICAL LINES MAY RESULT IN DEATH OR SERIOUS INJURY.
2. FOR PROPER AND SAFE OPERATION MAKE SURE THAT YOU HAVE BEEN PROPERLY
TRAINED IN CORRECT PROCEDURES REQUIRED FOR WORK ON OR AROUND ELEC-
TRIC LINES.
3. DO NOT EXCEED HOSE WORKING PRESSURE OR ABUSE HOSE. IMPROPER USE OR
HANDLING OF HOSE COULD RESULT IN BURST OR OTHER HOSE FAILURE. KEEP HOSE
AS FAR AWAY AS POSSIBLE FROM BODY AND DO NOT PERMIT DIRECT CONTACT
DURING USE. CONTACT AT THE BURST CAN CAUSE BODILY INJECTION AND SEVERE
PERSONAL INJURY.
4. HANDLE AND ROUTE HOSE CAREFULLY TO AVOID KINKING, CUTTING, OR CONTACT
WITH HIGH TEMPERATURE SURFACES. DO NOT USE IF KINKED. DO NOT USE HOSE TO
PULL OR LIFT TOOLS, POWER UNITS, ETC.
DO NOT REMOVE THIS TAG
DANGER
SEE OTHER SIDE SEE OTHER SIDE
HOSE TYPES

IW16 User Manual ◄ 9
Oil Flow Hose Lengths Inside Diameter USE
(Press/Return)
Min. Working Pressure
GPM LPM FEET METERS INCH MM PSI BAR
Certi ed Non-Conductive Hose - Fiber Braid - for Utility Bucket Trucks
4-9 15-34 up to 10 up to 3 3/8 10 Both 2250 155
Conductive Hose - Wire Braid or Fiber Braid -DO NOT USE NEAR ELECTRICAL CONDUCTORS
4-6 15-23 up to 25 up to 7.5 3/8 10 Both 2500 175 4-6 15-23 26-100 7.5-30 1/2 13 Both 2500 175
5-10.5 19-40 up to 50 up to 15 1/2 13 Both 2500 175
5-10.5 19-40 51-100 15-30 5/8 16 Both 2500 175 5-10.5 19-40 100-300 30-90 5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 up to 50 up to 15 5/8 16 Both 2500 175 10-13 38-49 51-100 15-30 5/8 16 Pressure 2500 175
3/4 19 Return 2500 175
10-13 38-49 100-200 30-60 3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
13-16 49-60 up to 25 up to 8
5/8 16 Pressure 2500 175 3/4 19 Return 2500 175
13-16 49-60 26-100 8-30
3/4 19 Pressure 2500 175
1 25.4 Return 2500 175
Figure 1. Typical Hose Connections
Tool to Hydraulic Circuit Hose Recommendations The chart to the right shows recommended minimum hose diameters for various hose lengths based on gallons per minute (GPM)/liters per minute (LPM). These recommendations are intended to keep return line pressure (back pressure) to a minimum acceptable level to ensure maximum tool performance. This chart is intended to be used for hydraulic tool applications only based on STANLEY tool operating requirements and should not be used for any other applications. All hydraulic hose must have at least a rated minimum working pressure equal to the maximum hydraulic system relief valve setting. All hydraulic hose must meet or exceed speci cations as set forth by SAE J517.
PRESSURE
RETURN
<<< FLOW
FLOW >>>
HOSE RECOMMENDATIONS

10 ► IW16 User Manual
HTMA / EHTMA REQUIREMENTS
TOOL TYPE
HTMA
HYDRAULIC SYSTEM REQUIREMENTS TYPE I TYPE II TYPE RR TYPE III
Flow range 4-6 GPM
(15-23 LPM)
7-9 GPM
(26-34 LPM)
9-10.5 GPM
(34-40 LPM)
11-13 GPM
(42-49 LPM)
Nominal operating pressure
(At the power supply outlet)
1500 psi
(103 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
System relief valve setting
(At the power supply outlet)
2100-2250 psi
(145-155 bar)
2100-2250 psi
(145-155 bar)
2200-2300 psi
(152-159 bar)
2100-2250 psi
(145-155 bar)
Maximum back pressure
(At tool end of the return hose)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
250 psi
(17 bar)
Measured at a max  uid viscosity of:
(At minimum operating temperature)
400 ssu*
(82 centistokes)
400 ssu*
(82 centistokes)
400 ssu*
(82 centistokes)
400 ssu*
(82 centistokes)
Temperature: Suffi cient heat rejection capacity to limit
maximum  uid temperature to:
(At maximum expected ambient temperature)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
140° F
(60° C)
Minimum cooling capacity at a temperature di󰀨 erence of
between ambient and  uid temps
3 hp
(2.24 kW)
40° F
(22° C)
5 hp
(3.73 kW)
40° F
(22° C)
6 hp
(5.22 kW)
40° F
(22° C)
7 hp
(4.47 kW)
40° F
(22° C)
Note: Do not operate the tool at oil temperatures above 140° F (60° C). Operation at higher temperatures can cause operator
discomfort at the tool.
Filter minimum full- ow  ltration 25 microns 25 microns 25 microns 25 microns
Sized for  ow of at least:
(For cold temp startup and maximum dirt-holding capacity)
30 GPM
(114 LPM)
30 GPM
(114 LPM)
30 GPM
(114 LPM)
30 GPM
(114 LPM)
Hydraulic  uid, petroleum based (premium grade, anti-
wear, non-conductive) Viscosity (at minimum and maximum
operating temps)
100-400 ssu
(20-82
centistokes)
100-400 ssu
(20-82
centistokes)
100-400 ssu
(20-82
centistokes)
100-400 ssu
(20-82
centistokes)
Note: When choosing hydraulic  uid, the expected oil temperature extremes that will be experienced in service determine the most
suitable temperature viscosity characteristics. Hydraulic  uids with a viscosity index over 140 will meet the requirements over a wide
range of operating temperatures.
*SSU = Saybolt Seconds Universal
CLASSIFICATION
EHTMA
HYDRAULIC SYSTEM
REQUIREMENTS BCD
Flow range
3.5-4.3 GPM
(13.5-16.5
LPM)
4.7-5.8 GPM
(18-22 LPM)
7.1-8.7 GPM
(27-33 LPM)
9.5-11.6 GPM
(36-44 LPM)
11.8-14.5 GPM
(45-55 LPM)
Nominal operating pressure
(At the power supply outlet)
1870 psi
(129 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
1500 psi
(103 bar)
System relief valve setting
(At the power supply outlet)
2495 psi
(172 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
2000 psi
(138 bar)
Note: These are general hydraulic system requirements. See tool speci cation page for tool speci c requirements.
HTMA / EHTMA REQUIREMENTS

IW16 User Manual ◄ 11
FACTORS THAT AFFECT TORQUE
An impact wrench is a rotary hammer that impacts the head of a bolt or nut. It does not apply a slow steady torque
like a standard torque wrench. Therefore, several factors a󰀨ect the result of torque when using impact wrenches:
1. LONG BOLTS: Long bolts having high-friction threads with lubrication under the bolt head or associated nut
can twist when impacted, then untwist before the next impact. This will especially happen if there is low friction
between the bolt head or nut and the mating surface.
2. HEAVY, LOOSE OR MULTIPLE ADAPTERS: Heavy, loose or multiple adapters between the wrench and
socket can dissipate the intensity of the impact to the bolt head or nut.
3. AMOUNT OF IMPACT: Maximum torque results can be obtained by allowing continuous impacting of the
socket against the bolt head or nut for at least 10 seconds.
4. HYDRAULIC FLOW RATE: If the ow rate to the tool is too low, the hammer (or impact) speed is reduced. If
the ow is correct, a change in the relief pressure does not a󰀨ect the impact force. Poorly designed hydraulic
circuits can result in lower ow rates and reduced impact speeds when pressure is required during impacting.
BOLT GRADE AND THREAD RECOMMENDATIONS
Allowable bolt torque is limited by both bolt thread diameter and grade of steel in the bolt. The IW16 Impact Wrench
is recommended for use on the following bolt grade and thread sizes:
SAE Grade 2 1-1/8 to 1-7/8 inch / 28.5 / 47.6 mm
SAE Grade 5 1 to 1-5/8 inch / 25.4-41.2 mm
SAE Grade 8 7/8 to 1-3/8 inch / 22.2-35 mm
PREPARATION PROCEDURES
CHECK POWER SOURCE
1. Using a calibrated ow meter and pressure gauge, check that the hydraulic power source develops a ow of
7–12 GPM / 20-45 LPM at 1000–2000 psi / 70–140 bar. Proper ow and pressure maintain proper tool speed.
2. Make certain that the hydraulic power source is equipped with a relief valve set to open at 2100 psi/145 bar
minimum.
3. Check that the hydraulic circuit matches the tool for open-center (OC) operation.
4. UNDERWATER MODELS ONLY: Make certain that the wrench impact mechanism is cleaned and greased with
waterproof grease after each day’s use.
INSERT TOOL BIT - FIG. 2
1.
Always use sockets and accessories designed
for impact type applications and that are in good
condition. DO NOT USE STANDARD SOCKETS
& ACCESSORIES OR SOCKETS THAT ARE IN
POOR CONDITION. THESE CAN CRACK OR
FRACTURE DURING OPERATION AND CAN
BECOME A PROJECTILE.
Disconnect the tool from the hydraulic power source.
2. Push socket onto the square anvil.
CONNECT HOSES
1. Wipe all hose couplers with a clean, lint-free cloth before making connections.
OPERATION
Figure 2 - Install Tool Bit

12 ► IW16 User Manual
OPERATION
2. Connect hoses from the hydraulic power source to the tool ttings or quick disconnects. It is good practice to
connect the return hose rst and disconnect it last to minimize or eliminate trapped pressure within the wrench.
3. Observe the ow indicators stamped on the main body assembly and the hose couplers to ensure that the ow
is in the proper directions. The female couple on the tools “IN” port is the inlet (pressure) coupler.
Note: If the uncoupled hoses are left in the sun, pressure increase within the hoses can make them di󰀩cult
to connect. Whenever possible, connect the free ends of hoses together.
WRENCH OPERATION - FIG. 3
The IW16 is designed for 1-inch square hex drive. The 1-inch drive conguration is used with drive sockets for high
impact (500–2500 ft lb / 680–3400 Nm) installation and removal of fasteners.
During normal operation it is common to see some grease leakage from around the anvil during hard use. Refer to
the IW16 Service Manual for the correct lubrication procedures.
Use at the low end of the 500–2500 ft lb / 680–3400 Nm torque range during continuous use over long periods of
time (impact times exceeding 10 seconds). The high temperature generated in the impact mechanism can reduce
steel part and lubricant durability within the wrench.
1. Observe all Safety Precautions.
2. Move the hydraulic circuit control valve to the “ON” position to operate the wrench.
3. Select the direction of impact desired using the reversing valve located on the side of the wrench. To select
clockwise direction, place the valve in the upward position. To select counter-clockwise direction, place the
valve in the downward position.
Note: To more accurately tighten bolts, lubricate threads, check with a torque wrench and duplicate time of
impacting for other bolts of the same length and thread size.
4. Squeeze the trigger to activate the wrench.
Note: Hold the tool correctly and be ready to counteract normal or sudden movements. Have both hands
available.
5. Release the trigger to stop the wrench.
6.
Figure 3 - Tool Use
3
4

IW16 User Manual ◄ 13
COLD WEATHER OPERATION
If the wrench is to be used during cold weather, preheat the hydraulic uid at low engine speed. When using the
normally recommended uids, uid temperature should be at or above 50° F/10° C (400 ssu/82 centistokes) before
use.
Damage to the hydraulic system or wrench can result from use with uid that is too viscous or too thick.
POST OPERATION—UNDERWATER MODELS ONLY
After each use, the movable portions of the tool that were exposed to water should be ushed with a water displacing
oil, such as WD-40™. Remove any remaining water and debris as follows:
1. Spray oil throughout all moving parts and any areas exposed to water.
2. Spray oil into the On/O󰀨 valve trigger slot area.
3. Dip or spray the entire tool.
4. Cycle the tool hydraulically several times before storing away.
The wrench impact mechanism must be cleaned and greased with waterproof grease after every day of use. The
main housing valve and motor are sealed and do not require maintenance unless they are malfunctioning.
Remove, clean, grease and assemble the impact mechanism as described in the IW16 Service Manual.
Figure 4 - Underwater Maintenance
EXTENSION HANDLE
If the handle and anchor block are removed, all valve handle/motor housing bolts must be cleaned, installed with
242 Loctite® and re-torqued. Contact STANLEY authorized service for procedure.
OPERATION

14 ► IW16 User Manual
• Make sure all couplers are wiped clean before
connection.
• The hydraulic circuit control valve must be in
the “OFF” position when coupling or uncoupling
hydraulic tools. Failure to do so may result in damage
to the quick couplers and cause overheating of the
hydraulic system.
• Always store the tool in a clean dry space, safe from
damage or pilferage.
• Make sure the circuit PRESSURE hose (with male
quick disconnect) is connected to the “IN” port. The
circuit RETURN hose (with female quick disconnect)
is connected to the opposite port. Do not reverse
circuit ow. This can cause damage to internal seals.
• Always replace hoses, couplings and other parts
with replacement parts recommended by STANLEY.
Supply hoses must have a minimum working
pressure rating of 2500 psi/172 bar.
• Do not exceed the rated ow. See “Specications” on
page 16 for correct ow rate and model number.
Rapid failure of the internal seals may result.
• Always keep critical tool markings, such as warning
stickers and tags, legible.
• Tool repair should be performed by experienced
personnel only.
• Make certain that the recommended relief valves
are installed in the pressure side of the system.
• Do not use the tool for applications for which it was
not intended.
In addition to the safety precautions found in
this manual, observe the following for equipment
protection and care.
TOOL PROTECTION & CARE

IW16 User Manual ◄ 15
If symptoms of poor performance develop, the following chart can be used as a guide to correct the problem. When
diagnosing faults in operation of the wrench, always check that the hydraulic power source is supplying the correct
hydraulic ow and pressure to the tool as listed in the following table. Use a ow meter known to be accurate. Check
the ow with the hydraulic uid temperature at least 80 ° F/27 ° C.
PROBLEM CAUSE SOLUTION
Low performance or impact. Incorrect hydraulic ow. Check that the hydraulic power source
is producing 7-12 GPM/20-45 LPM at
1500-2000 psi/105-140 bar. Proper
ow and pressure maintain proper tool
speed.
Defective quick disconnects. Check each quick disconnect.
Worn impact mechanism. Repair or replace the impact mecha-
nism. See Service Manual.
Hammer pins broken. Replace with integral frame (with pins).
Check relief adjustment screw setting.
Job may require a larger wrench.
Incorrect grease or periodic mainte-
nance of the impact mechanism is not
being performed.
See Service Manual.
Spools incorrectly installed. Valve(s) incorrectly reassembled. See
Service Manual.
Sockets or adapters too heavy or
loose.
Use the correct impact type sockets or
adapters.
Long bolt with lubricated head. Lubricate threads only.
Wrench runs too fast. Impact
mechanism or screws broken.
Incorrect hydraulic ow (too high). Check that hydraulic power source is
producing 7-12 GPM/20-45 LPM at
1500-2000 psi/105-140 bar. Proper
ow and pressure maintain proper tool
speed.
Supply and return hoses reversed. Install hoses correctly. Refer to Opera-
tion section in this manual.
Relief sleeve or spring damaged. Remove and replace spool assembly.
Adjusting screw is in too far. Adjust correctly.
Grease leaks at anvil busing,
wrench warm.
Hard duty cycle and heat forces
grease out.
Normal unless greasing instructions in
Service Manual are not followed.
Grease leaks at anvil bushing,
wrench cold.
Main shaft O-ring leaking. Replace as required.
Oil leak at motor cap face. Fasteners loose. Tighten to recommended torque.
Face O-ring worn or missing. Replace as required.
Motor cap/main housing damaged. Replace as required.
Oil leaks at reversing spool. Damaged O-rings. Replace as required. Check Service
Manual to avoid cutting O-rings on cross
holes in the spool bore.
Wrong hydraulic uid. Circuit too hot. Refer to “Specications” on page 16
for correct uid/circuit specications.
TROUBLESHOOTING

16 ► IW16 User Manual
Drive Size .................................................................................................................................... 1-inch Square Drive
Weight ......................................................................................................................................................26 lbs/12 kg
Overall Length ................................................................................................................................ 14-1/2-inch/37 cm
Width .......................................................................................................................................................4-inch/11 cm
Pressure Range................................................................................................................1500-2000 psi/105-140 bar
Flow Range ..............................................................................................................................7-12 GPM/20-45 LPM
Optimum Flow .................................................................................................................................... 8 GPM/30 LPM
System Type............................................................................................................Open Center, HTMA Type II or III
Porting ....................................................................................................................................................8 SAE O-ring
Output Speed (free spin) ................................................................................................ 2000 rpm at 5 GPM/19 LPM
Input Speed ......................................................................................................................... 1200 Impacts per Minute
Connect Size and Type ....................................................................................................3/8-inch Male Pipe Adapter
Torque...........................................................................................................................500–2500 ft. lb/680–3400 Nm
SOUND AND VIBRATION DECLARATION
Test conducted on IW16150.
Measured A-weighted sound power level, Lwa (ref. 1pW) in decibels 105.01 dBA
Uncertainty, Kwa, in decibels 3.39 dBA
Measured A-weighted sound pressure level, Lpa (ref. 20 µPa) at operator’s position,
in decibels 97.03 dBA
Uncertainty, Kpa, in decibels 3.39 dBA
Values determined according to noise test code given in EN ISO 15744, 11203 and 3744
Note: The sum of a measured noise emission value and its associated uncertainty represents an upper
boundary of the range of values which is likely to occur in measurements.
Measured vibration emission value: a (Trigger Handle) 62.2 m/sec²
Measured vibration emission value: a (Support Handle) 40 m/sec²
Uncertainty: K 13.4 m/sec²
Values determined according to ISO 28927-2
SPECIFICATIONS

IW16 User Manual ◄ 17
Description Part Number
Adapter, 1-inch to 3/4-inch Drive .......................................................................................................................31201
Extension, 10 inch, 1-inch Drive .......................................................................................................................31203
Socket Retainer Pin, 1-inch Square Drive Socket.............................................................................................33276
Socket Retainer Ring, 1-inch Square Drive Socket...........................................................................................33277
SOCKETS
1-inch Square Drive 4-point Rectangular Head Lag Screw Socket 7/8 in. x 1-1/8 in...........................................66318
1-inch Square Drive 8-Point Deep ×1-5/16 inch...............................................................................................25203
1-inch Square Drive 8-Point Deep ×1-3/8 inch.................................................................................................25204
1-inch Square Drive 8-Point Deep ×1-1/2 inch.................................................................................................25205
1-inch Square Drive 8-Point Deep ×1-9/16 inch...............................................................................................25206
1-inch Square Drive 8-Point Deep ×1-7/8 inch.................................................................................................25208
1-inch Square Drive 8-Point Deep ×2 inch .......................................................................................................25209
1-inch Square Drive 8-Point Deep ×2-1/8 inch.................................................................................................25210
1-inch Square Drive 8-Point Deep ×2-3/16 inch............................................................................................... 25211
1-inch Square Drive 8-Point Deep ×2-1/4 inch.................................................................................................25212
1-inch Square Drive 8-Point Deep ×1-5/8 inch.................................................................................................25216
1-inch Square Drive 8-Point Deep ×1-13/16 inch.............................................................................................25217
1-inch Square Drive 8-Point Deep ×1-11/16 inch .............................................................................................25218
1-inch Square Drive #70 Torx ............................................................................................................................26456
1-inch Square Drive 8-Point Deep ×1-1/4 inch.................................................................................................26529
1-inch Square Drive 4-Point Deep ×1 inch .......................................................................................................27710
Socket Sets
Socket Set, Includes 6 Sockets.........................................................................................................................33230
(25211, 25216, 25217, 25218, 26456, 27710)
Upright Handle Assy Kit...............................................72768
(Includes Upright Handle, decals, bolts, washers and Inst.)
ACCESSORIES

18 ► IW16 User Manual
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30 31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
4
10 21
56
57
58
58
59
60
61
62
62
63
31
7
64
Make sure the correct capscrew is used
in the correct location
TORQUE TO 55 ft lb IN
A CROSS PATTERN AS
SHOWN ABOVE
INSTALL WITH LOC-
TITE 242 TORQUE
TO 55 ft lb IN A
CROSS PATTERN AS
SHOWN ABOVE - 8
PLACES.
NOTE: IF THE TOOL
IS EQUIPPED WITH
HOSE WHIPS OR
COUPLERS THEY CAN
BE INSTALLED IN ONE
OF TWO PORTS. THE
PORTS FACING DOWN
OR THE PORTS FACING
TO THE REAR, MAKE
SURE THE PLUGS (ITEM
# 55) ARE INSTALLED IN
THE PORTS WITHOUT
THE HOSES OR COU-
PLERS.
NOTE:
Item 29
See page
18 Before
Ordering
NOTE: Item 20 See page
20 Before Ordering
IW16 PARTS ILLUSTRATION
3
6
2
4
1
5
78
BOLT TORQUE
SEQUENCE
55 LB FT
NOTE:
BOLTS 7 AND 8 INSTALL FROM
OPPOSITE SIDE
LUBRICATE BOLT
HEAD AND WASHER
PAIR WITH ANTI-SEIZE,
TORQUE TO 16 FT-LB
IMPACT MECHANISM
ASSEMBLY P/N-72763,
DECALS NOT INCLUDED
65
66
67

IW16 User Manual ◄ 19
ITEM # PART # QTY DESCRIPTION
1 00016 1 O-RING*
2 00026 1 O-RING*
3 73687 4 LOCKWASHER PAIR 5/16" I.D.
NORD-LOCK
4 00255 2 O-RING*
5 00580 1 SETSCREW 1/4-20 X 1/4
6 00663 1 RETAINING RING
7 00697 8 LOCKWASHER 1/2" I.D.
8 00717 1 O-RING*
9 00936 2 ADAPTER -8 (1/2) SAE X 3/8 NPT
10 01211 2 O-RING*
11 03972 1 COUPLER,3/8FEM. (SET 03971)
12 03973 1 COUPLER,3/8MALE (SET 03971)
13 04888 1 O-RING*
14 04939 1 LEVER
15 05965 1 ROLL PIN
16 06533 1 O-RING*
17 07982 1 SPRING REST
18 07984 1 RELIEF ADJUSTMENT SCREW
19 07986 1 RELIEF SEAT
20 73046 1 SPOOL (See page 18 before
ordering)
21 08015 2 Backup RING*
22 08122 1 COMPRESSION COIL SPRING
23 08125 1 SEAL Backup WASHER*
24 08128 1 IDLER GEAR ASSY
25 08131 1 COMPRESSION COIL SPRING
26 08133 1 TRIGGER
27 08135 1 RELIEF POPPET
28 08136 1 MAIN SHAFT
29 08137 1 MOTOR HOUSING ASSY (INCLUDES
ITEMS 61 THRU 64) DOES NOT
INCLUDE PILOT RING (p/n 08126).
30 08139 1 REVERSING SPOOL
31 08147 2 THRUST WASHER
32 08148 1 THRUST BEARING
33 74692 1 NAME TAG - IW16
34 08180 1 Backup RING*
35 09275 1 RETAINING RING EXTERNAL
36 09277 1 HEX NUT 5/16-18UNC
37 09284 6 HSHCS 1/2-13 X 1-3/4
38 09612 1 GENERAL CAUTION STICKER
39 09625 4 HSHCS 5/16-18 X 1-1/2
40 11207 1 CIRCUIT TYPE "D" STICKER
41 12412 1 DANGER STICKER - ELECTRICAL
42 12535 1 CIRCUIT TYPE "E" STICKER
ITEM # PART #. QTY DESCRIPTION
43 73167 1 VALVE HANDLE ASSY (INCLUDES
ITEMS 55 and 62).
44 21986 2 HSHCS 1/2-13 X 2-1/4
45 22063 1 SPOOL CAP
46 22064 1 ROD WIPER*
47 24682 1 HAMMER CASE, (LAND MODEL)
(INCLUDES BUSHING ITEM 56)
72770 1 HAMMER CASE (UNDERWATER)
(BUSHING NOT INCLUDED)
48 23678 1 HEADED PUSH PIN
49 23817 1 THRUST SPACER
50 28323 1 CE STICKER
51 28788 1 STICKER - MANUAL
52 30136 1 ROTATION DIRECTION STICKER
53 32087 1 ASSIST HANDLE
54 66305 1 GUARANTEED SOUND POWER
LEVEL 116 dBA
55 350237 2HOLLOW HEX PLUG - 8 SAE
56 21011 1 BUSHING (LAND MODEL)
(NOTE: ALSO SEE ITEM 47)
21011 BUSHING (UNDERWATER)
57 24678 1 ANVIL 1” SQUARE (LAND MODEL)
24678 1 ANVIL 1” SQUARE (UNDERWATER)
58 24680 2HAMMER PINS, COMES WITH ITEM
59 (LAND MODEL)
24680 2HAMMER PINS (UNDERWATER)
59 24679 1 HAMMER FRAME WITH PINS (LAND
MODEL)
72840 1 HAMMER FRAME (UNDERWATER)
60 24677 2HAMMER
61 08123 1 IDLER SHAFT
62 08146 2BUSHING
63 07995 1 INSERT
64 03252 1 O-RING
65 23134 1 DRIVE IMPACT MECHANISM (INCL
ITEMS 47 & 56 THRU 60)
66 24757 1 DRIVE IMPACT MECHANISM
(UNDERWATER) (INCL ITEMS 47, 56
THRU 60 & O-RING p/n 01276)
67 56725 2HOSE ASSY for IW16150S (NOT
PICTURED)
66727 2HOSE ASSY for IW16150BN (NOT
PICTURED)
81160 1 COUPLER SET FOR IW16150BN
SEAL KIT (P/N-09602) * DENOTES PART IN SEAL KIT
IW16 PARTS LIST

20 ► IW16 User Manual
Beginning at serial number 031513001, the valve handle assembly has changed. The prior style (part # 17279) used
a steel spool sleeve installed in the valve handle assembly. The new style valve handle assembly (part # 73167) does
not use a spool sleeve.
New style valve spool assembly (part # 73046) is required for use in the new style valve handle assembly.
The new style valve handle assembly will only accept new style on/o󰀨 spool (PN 73046). If replacing old style 17279
valve handle assembly with new style 73167, replacement of 73046 valve spool is also required. New style on/o󰀨 spool
73046 will t old style and new style valve handle assemblies. Old style valve spool P/N 07998 is no longer available
and substitutes to new style 73046.
Please refer to the photos below of the old style and new style valve handle and on/o󰀨 spools.
ALL IW16 IMPACT WRENCH MODELS
Notication of change in valve handle assembly and on/o spool.
Part numbers and compatibility (March 2013).
Old Style –No Longer Available
New Style –Uses no sleeve in spool bore.
Please contact the Technical Service Department at 503-659-5660 with any questions.
VALVE HANDLE CHANGE NOTICE