Hytorc jGun J-.25 Assembly instructions

jGun® SINGLE AND DUAL SPEED Pneumatic Torque Tools
Basic Operations Manual
333 Route 17 N.
Mahwah, NJ 07430
USA
800-FOR-HYTORC
(800-367-4986)
201-512-9500
hytorc.com

Models
jGun® SINGLE SPEED:
J-.25, J-.5, J-1, J-3, J-5, J-8
jGun® DUAL SPEED:
J-A.5-AP, J-A1-AP, J-A3-AP,
J-A5-AP, J-A8-AP
Technical Certifications
For a complete EC declaration of conformity or if you
require any further assistance please call your local
HYTORC Representative or 1-800-FOR-HYTORC
(1-800-367-4986). Please visit us at HYTORC.com.
5002282
EN ISO 12100-1:2011
EN ISO 12100-2:2011
EN ISO 14121-1:2007
EN ISO 11148-6:2012
EN ISO 4414:2010
EN 61310-2:2008
EN 61310-3:2008
ISO 3744:2011
Notice. The information contained in this document is subject to change without notice. HYTORC makes no warranty of any kind
with regard to this material, including but not limited to, the implied warranties of merchantability and fitness for a particular purpose.
HYTORC shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing,
performance, or use of this material. It is further recommended that the end-user or repair technician insure they have obtained and
are familiar with the latest revision of the manual for the equipment outlined in this document.
Restricted Rights Legend. Use and duplication of the information contained within this manual is limited to the purchaser, end user,
or licensed HYTORC representative. It is recommended that proper training for the equipment outlined in this manual be conducted
by a HYTORC-authorized training representative for any person who is operating or repairing the equipment outlined in this docu-
ment. Modification of, or disclosure by any other agency or representative is strictly forbidden.
Product Modifications. HYTORC DOES NOT ALLOW any of the products listed in this manual to be modified by any end user without
exception. Should an application require a modification to the tool, or any of the standard accessories please consult with your local
HYTORC representative and they will be able to obtain the assistance for any modification that may be required.
jGun® is a registered trademark of HYTORC.
Copyright © 2020 HYTORC All Rights Reserved. Reproduction, adaptation, or translation without prior written permission is prohib-
ited, except as allowed under the copyright laws.
Warranty. The jGun® Pneumatic Torque Tools (SINGLE SPEED and DUAL SPEED Models) have a one-year limited warranty. Every
tool is tested before leaving the factory and is warranted to be free from defects in workmanship and materials. HYTORC will repair or
replace, without charge, any tool which, upon examination, proves to be defective in workmanship or materials for one (1) year after
the date of purchase. This warranty does not cover damage resulting from repairs made or attempted by unauthorized repair facilities.
The repair and replacement remedies described herein are exclusive. In no event shall HYTORC be liable for any incidental, special,
or consequential damages, including loss of profits. This warranty is exclusive and in lieu of all other warranties or conditions, written
or oral, expressed or implied for merchantability or fitness for particular use or purpose. This warranty gives you specific legal rights.
You may also have other rights that vary from state to state and province to province. In those states that do not allow the exclusion
of implied warranties or limitation of incidental or consequential damages, the above limitations or exclusions may not apply to you. If
you have questions about the warranty, contact our customer service center at 201-828-5270.
Printed in the USA. June 2020
TECHNICAL CERTIFICATIONS
NOTICE OF PROPRIETARY RIGHTS: HYTORC Division UNEX Corporation (“HYTORC”) is the owner of all content included in this document and all right, title and interest to such content shall
remain with HYTORC. COPYRIGHT NOTICE: © 2020 HYTORC. Any unauthorized use or distribution of any material from this document, without HYTORC’s written permission, is strictly prohibited.
TRADEMARK NOTICE: This document contains numerous registered trademarks and servicemarks of HYTORC in the U.S. and other countries. PATENT NOTICE: Products in this document are
covered by numerous registered and/or pending patents in the U.S. and other countries.

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•User safety training upon receipt of merchandise
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•Annual safety seminar on appointment
•Loaner tools in event of product failure within 24 hours
•Torque/Tension consultation/seminar
•Half-Day, first-use supervision
*Above services are not subject to travel expense charges.
•All repairs are guaranteed for 6 months.
•All repairs are subject to labor and part cost as outlined
in the oicial HYTORC price list.
•All repairs will be tested and calibrated to ensure the
highest quality repairs.
•All warranty repairs are free of all charges including
return-freight.
•100% of all paid rentals will be applied as a discount
towards any new purchase in that calendar year
•User training for first-time rentals is free of all cost
•Rental tools are guaranteed to perform and are subject
to the free loaner tool policy of HYTORC
If you require any further assistance, please call your local HYTORC Representative or 1-800-FOR-HYTORC
(1-800-367-4986). Please visit us at HYTORC.com.
•User training for first-time rentals
•Warranty repairs including return-freight
•Annual product inspection on request
•Product demonstrations
•12-Month no-questions-asked warranty
•Upgrades during the lifetime of the tool to enhance
safety, durability, and function

Warranty 6
jGun Overview 6
EC Declaration (ISO 11148-6:2012) 7
EC Declaration - ISO 12100:2010(E) 14
Emissions 19
jGun Safety 20
Personal Protective Equipment 20
Air Supply Requirements 20
The New Patented Safety Lever 20
Reaction Arm or HYTORC Washer 21
Reaction Arm and Socket 22
Key Operating Safety Points 25
jGun Setup and Use 26
Setting a Torque Value 26
Changing the Drive Direction 27
Operating the jGun 28
Loosening a Fastener 29
jGun Repair and Maintenance 30
Maintaining Hoses and Fittings 30
Lubricating the Air Motor 30
Calibration 18
jGun® DUAL SPEED Pneumatic Torque Tool 31
Shifting Between Modes 32
Tool Operation 32
Operation with a Socket and Reaction Arm 33
Operation with a HYTORC Washer 33
Filter/Regulator/Lubricator (FRL) Unit Overview 34
FRL Safety 34
Personal Protective Equipment 35
Air Supply Requirements 35
FRL Setup and Use 36
Important FRL Operating Procedures 36
Emptying the Filter Reservoir 36
Adjusting Air Pressure 38
Filling the Lubricator Reservoir 39
Adjusting the Flow 40
Repair and Maintenance 40
Hoses and Fittings 40
Anti-Explosion Static Dissipative Hose 41
TABLE OF CONTENTS

TABLE OF CONTENTS (CONTINUED)
HYTORC Washer Overview 41
Safety 42
Personal Protective Equipment 42
HYTORC Washer Requirements 43
HYTORC Washer Assembly, Use and Service (SETUP) 43
Important Preparation Steps for the HYTORC Washer 43
Important Installation Procedures 44
Tightening with the HYTORC Washer 46
jGun Maintenance and Troubleshooting Tips 46
Changelog 46
Figures 21
Figure 1. Reaction Arm 21
Figure 2. HYTORC Washer and Driver 21
Figure 3. Installing a Reaction Arm 22
Figure 4. Reaction Arm Installed 23
Figure 5. Tightening Reaction Arm Set Screw 23
Figure 6. Installing jGun Socket 24
Figure 7. Installing Socket Locking Pin and Retaining Ring 24
Figure 8. Placement of Reaction Arm 25
Figure 9. jGun Drive Direction Lever 27
Figure 10. jGun Operation 28
Figure 11. Using the jGun with a HYTORC Washer 29
Figure 12. jGun® DUAL SPEED 31
Figure 13. High Speed Setting (Left) and Maximum Torque Setting (Right) 32
Figure 14. FRL Unit (Shown without silencer) 34
Figure 15. Emptying the FRL Filter Reservoir 37
Figure 16. Detaching FRL Reservoir 37
Figure 17. FRL Unit – Lubricator 2/3 Full of Oil 38
Figure 18. Adjusting FRL Regulator 39
Figure 19. Adjusting FRL Oil Flow 40
Figure 20. Static Dissipative Hose 41
Figure 21. HYTORC Washer and Driver 41
Figure 22. HYTORC Washer Socket Mounted on jGun 42
Figure 23. HYTORC Washer Installed 44
Figure 24. Aligning HYTORC Washer Socket Set Screw with Machined Recess in jGun Splines 45
Figure 25. Tightening HYTORC Washer Set Screw 45
TABLES 26
Table 1: Bolt Torque Specications 26

Warranty
The jGun has a one year limited warranty. Every HYTORC tool is tested before leaving the factory and is
warranted to be free from defects in workmanship and materials. HYTORC will repair or replace, without
charge, any tool which upon examination proves to be defective in workmanship or materials for one (1)
year after the date of purchase. This warranty does not cover damage from repairs made or attempted by
other than HYTORC authorized repair facilities.
The repair and replacement remedies described herein are exclusive. In no event shall HYTORC be liable
for any incidental, special, or consequential damages, including loss of prots. This warranty is exclusive
and in lieu of all other warranties or conditions, written or oral, expressed or implied for merchantability or
tness for particular use or purpose.
This warranty gives you specic legal rights. You may also have other rights that vary from state to state
and province to province. In those states that do not allow the exclusion of implied warranties or limitation
of incidental or consequential damages, the above limitations or exclusions may not apply to you.
If you have questions about the HYTORC warranty, contact our customer service center at 201-828-5270.
HYTORC
120 Wesley Street, Hackensack, New Jersey 07606 U.S.A.
Tel: [phone] • E-Mail: [email protected] • Web: www.hytorc.com
6
jGun Overview
The jGun pneumatic torque wrench is designed to safely and accurately deliver up to 8,000 ft-lbs of
torque onto a fastener. This is accomplished using a patented planetary gearbox torque multiplier
system and an appropriate reaction arm or HYTORC Reaction Washer™ and HYTORC Nut™. The
torque multiplier produces torque ratios of up to 1450:1 while the reaction arm or washer is used to
absorb the high counter rotational force produced as the nal torque value is reached. At nal torque
value, the jGun safely stalls out, leaving the fastener tightened to specication.
Unlike impact wrenches, the jGun never transmits working torque to the operator. The torque is applied
between the fastener and the reaction surface.
This manual provides information for both the standard jGun® SINGLE SPEED and the jGun® DUAL
SPEED.

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 7
EC Declaration (ISO 11148-6:2012)
6.2 Instructions handbook
6.2.1 General
For the information provided to the user, the content of Clause 6 together with ISO 12100:2010, 6.4.5.2
and 6.4.5.3, apply.
The information provided by the manufacturer is an important, but not exclusive, basis for the safe use
of the assembly power tool for threaded fasteners. It shall provide sufcient information for the end user
to perform an initial risk assessment. The hazards identied in 6.2.2.4 to 6.2.2.12 are foreseeable in the
general use of hand-held assembly power tools for threaded fasteners. The information provided with the
tool shall state that the user or the user’s employer shall assess the specic risks that can be present as a
result of each use.
The instructions handbook shall contain information relating to at least the following:
— name and address of the manufacturer or supplier or any other agent responsible for placing the
assembly power tool for threaded fasteners on the market;
— designation of the series or type;
— operating instructions; see 6.3;
— information on noise emission; see 6.4.2;
— information on vibration transmitted to the hands of the operator; see 6.4.3;
— maintenance instructions; see 6.5;
— explanations of any symbols marked on the assembly power tool for threaded fasteners; see Annex C;
— information about residual risks and how to control them.
6.2.2 Operator’s instructions
6.2.2.1 General
The instructions and warnings stated in 6.2.2 to 6.2.4 shall be given with all assembly power tools for
threaded fasteners unless the risk assessment shows that they are not relevant to a particular assembly
power tool for threaded fasteners. Words of equivalent meaning may be used.
6.2.2.2 Statement of use
The operator’s instructions shall include a description of the correct use of the assembly power tool for
threaded fasteners and make reference to the appropriate inserted tools. The operator’s instructions
shall state that any other use is forbidden. Foreseeable misuse of the assembly power tool for threaded
fasteners, which experience has shown to occur, shall be warned against.
6.2.2.3 Allowance for user
The operator’s instructions shall be written primarily for professional users. Where a tool can be used by
nonprofessional users, additional information for use shall be provided.

8
6.2.2.4 General safety rules
— For multiple hazards, read and understand the safety instructions before installing, operating, repairing,
maintaining, changing accessories on, or working near the assembly power tool for threaded fasteners.
Failure to do so can result in serious bodily injury.
— Only qualied and trained operators should install, adjust or use the assembly power tool for threaded
fasteners.
— Do not modify this assembly power tool for threaded fasteners. Modications can reduce the
effectiveness of safety measures and increase the risks to the operator.
— Do not discard the safety instructions; give them to the operator.
— Do not use the assembly power tool for threaded fasteners if it has been damaged.
— Tools shall be inspected periodically to verify that the ratings and markings required by this part of
ISO 11148 are legibly marked on the tool. The employer/user shall contact the manufacturer to obtain
replacement marking labels when necessary.
6.2.2.5 Projectile hazards
— Failure of the workpiece, of accessories or even of the inserted tool itself can generate high-velocity
projectiles.
— Always wear impact-resistant eye protection during the operation of the assembly power tool for
threaded fasteners. The grade of protection required should be assessed for each use.
— Ensure that the workpiece is securely xed.
6.2.2.6 Entanglement hazards
— Entanglement hazards can result in choking, scalping and/or lacerations if loose clothing, personal
jewellery, neckware, hair or gloves are not kept away from the tool and accessories.
— Gloves can become entangled with the rotating drive, causing severed or broken ngers.
— Rotating drive sockets and drive extensions can easily entangle rubber-coated or metal-reinforced
gloves.
— Do not wear loose-tting gloves or gloves with cut or frayed ngers.
— Never hold the drive, socket or drive extension.
— Keep hands away from rotating drives.
6.2.2.7 Operating hazards
— The use of the tool can expose the operator’s hands to hazards including crushing, impacts, cuts and
abrasions and heat. Wear suitable gloves to protect hands.
— Operators and maintenance personnel shall be physically able to handle the bulk, weight and power of
the tool.
— Hold the tool correctly; be ready to counteract normal or sudden movements and have both hands
available.
— Maintain a balanced body position and secure footing.
— In cases where the means to absorb the reaction torque are requested, it is recommended to
use a suspension arm whenever possible. If that is not possible, side handles are recommended for
straightcase and pistol-grip tools. Reaction bars are recommended for angle nutrunners. In any case, it is
recommended to use a means to absorb the reaction torque above 4 N·m for straight tools, above 10 N·m
for pistol-grip tools, and above 60 N·m for angle nutrunners.
— Release the start-and-stop device in the case of an interruption of the energy supply.
— Use only lubricants recommended by the manufacturer.
— Fingers can be crushed in open-ended crow-foot nutrunners.
— Do not use in conned spaces and beware of crushing hands between tool and workpiece, especially
when unscrewing.

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 9
6.2.2.8 Repetitive motions hazards
— When using a power tool for, the operator can experience discomfort in the hands, arms, shoulders,
neck, or other parts of the body.
— While using an assembly power tool for threaded fasteners, the operator should adopt a comfortable
posture while maintaining secure footing and avoiding awkward or off-balanced postures. The operator
should change posture during extended tasks, which can help avoid discomfort and fatigue.
— If the operator experiences symptoms such as persistent or recurring discomfort, pain, throbbing,
aching, tingling, numbness, burning sensations or stiffness, these warning signs should not be ignored.
The operator should tell the employer and consult a qualied health professional.
6.2.2.9 Accessory hazards
— Disconnect the assembly power tool for threaded fasteners from the energy supply before changing
the inserted tool or accessory.
— Do not touch sockets or accessories during impacting, as this increases the risk of cuts, burns or
vibration injuries.
— Use only sizes and types of accessories and consumables that are recommended by the assembly
power tool for threaded fasteners manufacturer; do not use other types or sizes of accessories and
consumables.
— Use only impact-wrench-rated sockets in good condition, as poor condition or hand sockets and
accessories used with impact wrenches can shatter and become a projectile.
6.2.2.10 Workplace hazards
— Slips, trips and falls are major causes of workplace injury. Be aware of slippery surfaces caused by the
use of the tool and also of trip hazards caused by the air line or hydraulic hose.
— Proceed with care in unfamiliar surroundings. Hidden hazards, such as electricity or other utility lines,
can exist.
— The assembly power tool for threaded fasteners is not intended for use in potentially explosive
atmospheres and is not insulated against coming into contact with electric power.
— Make sure there are no electrical cables, gas pipes, etc., that can cause a hazard if damaged by use of
the tool.
6.2.2.11 Dust and fume hazards
— Dust and fumes generated when using assembly power tools for threaded fasteners can cause ill
health (for example cancer, birth defects, asthma and/or dermatitis); risk assessment and implementation
of appropriate controls for these hazards are essential.
— Risk assessment should include dust created by the use of the tool and the potential for disturbing
existing dust.
— Direct the exhaust so as to minimize disturbance of dust in a dust-lled environment.
— Where dust or fumes are created, the priority shall be to control them at the point of emission.
— All integral features or accessories for the collection, extraction or suppression of airborne dust or
fumes should be correctly used and maintained in accordance with the manufacturer’s instructions.
— Use respiratory protection in accordance with employer’s instructions and as required by occupational
health and safety regulations.

10
6.2.2.12 Noise hazards
— Exposure to high noise levels can cause permanent, disabling hearing loss and other problems,
such as tinnitus (ringing, buzzing, whistling or humming in the ears). Therefore a risk assessment and
implementation of appropriate controls for these hazards are essential.
— Appropriate controls to reduce the risk may include actions such as damping materials to prevent
workpieces from “ringing”.
— Use hearing protection in accordance with employer’s instructions and as required by occupational
health and safety regulations.
— Operate and maintain the assembly power tool for threaded fasteners as recommended in the
instructions handbook, to prevent an unnecessary increase in noise levels.
— If the assembly power tool for threaded fasteners has a silencer, always ensure it is in place and in
good working order when the assembly power tool for threaded fasteners is operating.
— Select, maintain and replace the consumable/inserted tool as recommended in the instructions
handbook, to prevent an unnecessary increase in noise.
6.2.2.13 Vibration hazards
The information for use shall draw attention to vibration hazards that have not been eliminated by
design and construction and remain as residual vibration risks. It shall enable employers to identify
the circumstances in which the operator is likely to be at risk from vibration exposure. If the vibration
emission value obtained using ISO 28927-2 does not adequately represent the vibration emission in
the intended uses (and foreseeable misuses) of the machine, additional information shall be supplied to
enable the risks arising from vibration to be assessed and managed.
For recommended interface dimensions for spindles and drive adapters to help reduce vibrations, see
ISO/TS 21108.
— Exposure to vibration can cause disabling damage to the nerves and blood supply of the hands and
arms.
— Keep the hands away from the nutrunner sockets.
— Wear warm clothing when working in cold conditions and keep your hands warm and dry.
— If you experience numbness, tingling, pain or whitening of the skin in your ngers or hands, stop using
the assembly power tool for threaded fasteners, tell your employer and consult a physician.
— Operate and maintain the assembly power tool for threaded fasteners as recommended in the
instructions handbook, to prevent an unnecessary increase in vibration levels.
— Do not use worn or ill-tting sockets or extensions, as this is likely to cause a substantial increase in
vibration.
— Select, maintain and replace the consumable/inserted tool as recommended in the instructions
handbook, to prevent an unnecessary increase in vibration levels.
— Sleeve ttings should be used where practicable.
— Support the weight of the tool in a stand, tensioner or balancer, if possible.
— Hold the tool with a light but safe grip, taking account of the required hand reaction forces, because
the risk from vibration is generally greater when the grip force is higher.

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 11
6.2.3 Additional safety instructions for pneumatic power tools
— Air under pressure can cause severe injury:
— always shut off air supply, drain hose of air pressure and disconnect tool from air supply when
not in use, before changing accessories or when making repairs;
— never direct air at yourself or anyone else.
— Whipping hoses can cause severe injury. Always check for damaged or loose hoses and ttings.
— Cold air shall be directed away from the hands.
— Do not use quick-disconnect couplings at tool inlet for impact and air-hydraulic impulse wrenches. Use
hardened steel (or material with comparable shock resistance) threaded hose ttings.
— Whenever universal twist couplings (claw couplings) are used, lock pins shall be installed and
whipcheck safety cables shall be used to safeguard against possible hose-to-tool and hose-and-hose
connection failure.
— Do not exceed the maximum air pressure stated on the tool.
— For torque-control and continuous-rotation tools, the air pressure has a safety critical effect on
performance. Therefore, requirements for length and diameter of the hose shall be specied.
— Never carry an air tool by the hose.
6.2.4 Additional safety instructions for hydraulic power tools
— Do not exceed the maximum relief-valve setting stated on the tool.
— Carry out a daily check for damaged or worn hoses or hydraulic connections and replace if necessary.
— Use only clean oil and lling equipment.
— Power units require a free ow of air for cooling purposes and should, therefore, be positioned in a well
ventilated area free from hazardous fumes.
— Ensure that couplings are clean and correctly engaged before operation.
— Do not inspect or clean the tool while the hydraulic power source is connected. Accidental
engagement of the tool can cause serious injury.
— Do not install or remove the tool while the hydraulic power source is connected. Accidental
engagement of the tool can cause serious injury.
— Be sure all hose connections are tight.
— Wipe all couplers clean before connecting. Failure to do so can result in damage to the quick couplers
and cause overheating. Instructions shall be given that only hydraulic uid recommended by the
manufacturer shall be used.
NOTE: It is advisable to equire of the manufacturer whether or not non-ammable uids can be used.
6.2.5 Specific safety instructions
Warnings shall be given about any specic or unusual hazards associated with the use of the assembly
power tool for threaded fasteners. Such warnings shall indicate the nature of the hazard, the risk of injury
and the avoidance action to take.
6.3 Operating instructions
The instructions shall include, where appropriate,
— instructions for setting up or xing the assembly power tool for threaded fasteners in a stable position,
appropriate for assembly power tools for threaded fasteners that can be mounted in a support;
— assembly instructions, accessories and inserted tools;
— illustrated description of functions;
— limitation on tool use due to environmental conditions;
— instructions for setting and testing;
— general instructions for use, including changing inserted tools and limits on the size and type of
workpiece.

12
6.4 Data
6.4.1 General
The instructions shall include the information on the data plate and the following:
— mass of the assembly power tool for threaded fasteners;
— for hydraulic assembly power tools for threaded fasteners:
— specication of the coupling,
— specication of hoses with regard to pressure and ow,
— maximum inlet temperature of the inlet uid.
6.4.2 Noise
6.4.2.1 Declaration of emission
The instructions shall include a noise-emission declaration in accordance with ISO 15744.
6.4.2.2 Additional information
If the values for noise emissions obtained using the appropriate tests dened in 5.2 do not adequately
represent the emissions during the intended uses of the machine, additional information and/or warnings
shall be supplied to enable an assessment and the management of the associated risks. Information on
noise emission shall also be provided in the sales literature describing the performance characteristics of
machinery.
6.4.3 Vibration
6.4.3.1 Declaration of emission
The instructions handbook shall include the vibration-emission value and uncertainty as specied in 5.3
and the reference number of the test code, ISO 28927-2.
6.4.3.2 Additional information
If the values for vibration emissions obtained using the appropriate tests dened in 5.3 do not
adequately represent the emissions during the intended uses of the machine, additional information and/
or warnings shall be supplied to enable the potential risks to be assessed and managed. Information on
vibration emission should also be provided in the sales literature.
6.5 Maintenance instructions
The maintenance instructions shall contain
— instructions to keep the assembly power tools for threaded fasteners safe by regular preventative
maintenance;
— information on when the regular preventative maintenance shall be carried out, for instance, after a
specied time of operation, a specied number of cycles/operations or a stated number of times per
year;
— instructions for disposal so as not to expose personnel and the environment to hazards;
— list of the service operations that the user should carry out;
— instructions for lubrication, if required;
— instructions to check the speed and make a simple check of the vibration level after each service;
— instructions to check the speed regularly;
— specications of the spare parts for use when these affect the health and safety of operators.
Maintenance instructions shall include the precautions to take to avoid exposure to hazardous
substances deposited (due to work processes) on the tool.
NOTE: Skin exposure to hazardous dust can cause severe dermatitis. If dust is generated or disturbed
during the maintenance procedure, it can be inhaled.

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 13
Annex A (informative)
List of significant hazards
This annex contains all the signicant hazards, hazardous situations and events, as far as they are dealt
with in this part of ISO 11148, identied by risk assessment as signicant for this type of machinery
and that require action to eliminate or reduce the risk. The following signicant hazards are associated
with the use of assembly power tools for threaded fasteners. For additional hazards that can occur in
assembly power tools for threaded fasteners driven by an internal combustion engine, see Annex D.
Hazard Type Reference to Safety Requirement
By Design or Guarding Information for Use
1 Mechanical hazards:
— Crushing
— Cutting
— Drawing in or trapping (caused by hair, clothing, etc., Getting
entangled in a rotating assembly power tool for threaded fasteners)
— Friction or abrasion hazard
— Loss of stability
— Whipping hose
— Ejection from high-pressure hydraulic systems
— Ejection of parts
— Hoseandhosecouplingspecications
4.2.5, 4.8.1, 4.8.2, 4.8.4
4.2.1, 4.8.1, 4.8.2, 4.8.3
4.8.1, 4.8.2, 4.8.3
4.2.1, 4.8.1, 4.8.2 4.2.2
4.2.3
4.2.4, 4.2.6, 4.2.7
6.2.2.5, 6.2.2.6 6.2.2.5,
6.2.2.6, 6.2.2.8 6.2.2.5,
6.2.2.8
6.2.2.6, 6.2.2.8
6.2.3, 6.2.4
6.2.2.4, 6.2.2.8
6.2.3, 6.2.4
2 Electrical hazards 6.2.2.9
3 Thermal hazards:
– Explosions
– Health damage due to hot or cold surfaces
4.3
4.3
6.2.2.9
6.2.2.8
4 Hazards caused by noise 4.4 6.2.2.11
5 Hazards generated by vibration
– Hazards caused by the operator putting hands on the
nut-running socket
4.5 6.2.2.12
6.2.2.5, 6.2.2.8
6 Hazards generated by materials and substances processed, used
or exhausted:
– Exhaust air or gas
– Lubricants
– Hydraulicuid
4.6.1
4.6.2
4.2.3
6.2.3, 6.2.2.10
6.2.2.6
6.2.4
7 Hazards caused by neglecting ergonomic principles:
– Repetitive strain injuries
– Unsuitable postures
– Inadequate grip design and tool balance
– Effects of reaction forces upon operator
– Neglected use of personal protection equipment
4.7.1, 4.7.2, 4.7.3, 4.8.3
4.7.3
6.2.2.6, 6.2.2.7
6.2.2.6, 6.2.2.7
6.2.2.6
6.2.2.6
6.2.2.4, 6.2.2.5, 6.2.2.6,
6.2.2.10
8 Hazards caused by the energy supply:
– Unexpected return of energy supply after a breakdown
– Dischargeofhigh-pressureairorhydraulicuid
– Incorrecthydraulicuidowandoutletpressure
6.2.4, 6.2.2.6
6.2.4
6.2.4
9 Hazards caused by missing and/or incorrectly positioned safety-
related means:
– Start-and-stop device
– Unintentional start
4.8.1
4.8.2
6.2.2.6

14
EC Declaration - ISO 12100:2010(E)
6.4 Information for use
6.4.1 General requirements
6.4.1.1 Drafting information for use is an integral part of the design of a machine (see Figure 2).
Information for use consists of communication links, such as texts, words, signs, signals, symbols or
diagrams, used separately or in combination to convey information to the user. Information for use is
intended for professional and/or non-professional users.
NOTE: See also IEC 62079 for structuring and presentation of information for use.
6.4.1.2 Information shall be provided to the user about the intended use of the machine, taking into
account, notably, all its operating modes.
The information shall contain all directions required to ensure safe and correct use of the machine. With
this in view, it shall inform and warn the user about residual risk.
The information shall indicate, as appropriate,
— the need for training,
— the need for personal protective equipment, and
— the possible need for additional guards or protective devices (see Figure 2, Footnote d).
It shall not exclude uses of the machine that can reasonably be expected from its designation and
description and shall also warn about the risk which would result from using the machine in other ways
than the ones described in the information, especially considering its reasonably foreseeable misuse.
6.4.1.3 Information for use shall cover, separately or in combination, transport, assembly and installation,
commissioning, use of the machine (setting, teaching/programming or process changeover, operation,
cleaning, fault-nding and maintenance) and, if necessary, dismantling, disabling and scrapping.
6.4.2 Location and nature of information for use
Depending on the risk, the time when the information is needed by the user and the machine design, it
shall be decided whether the information — or parts thereof — are to be given
a) in/on the machine itself (see 6.4.3 and 6.4.4),
b) in accompanying documents (in particular instruction handbook, see 6.4.5),
c) on the packaging,
d) by other means such as signals and warnings outside the machine.
Standardized phrases shall be considered where important messages such as warnings are given (see
also IEC 62079).
6.4.3 Signals and warning devices
Visual signals, such as ashing lights and audible signals such as sirens may be used to warn of an
impending hazardous event such as machine start-up or overspeed. Such signals may also be used to
warn the operator before the triggering of automatic protective measures (see 6.3.2.7).
It is essential that these signals
a) be emitted before the occurrence of the hazardous event,
b) be unambiguous,
c) be clearly perceived and differentiated from all other signals used, and
d) be clearly recognized by the operator and other persons.

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 15
The warning devices shall be designed and located such that checking is easy. The information for use
shall prescribe regular checking of warning devices.
The attention of designers is drawn to the possibility of “sensorial saturation”, which can result from too
many visual and/or acoustic signals and which can also lead to defeating the warning devices.
NOTE: Consultation of the user on this subject is often necessary.
6.4.4 Markings, signs (pictograms) and written warnings
Machinery shall bear all markings which are necessary
a) for its unambiguous identication, including at least
1) the name and address of the manufacturer,
2) the designation of series or type, and
3) the serial number, if any,
b) in order to indicate its compliance with mandatory requirements, comprising
1) marking, and
2) written indications, such as the authorized representative of the manufacturer, designation of the
machinery, year of construction, and intended use in potentially explosive atmospheres),
c) for its safe use, for example,
1) maximum speed of rotating parts,
2) maximum diameter of tools,
3) mass (in kilograms) of the machine itself and/or of removable parts,
4) maximum working load,
5) necessity of wearing personal protective equipment,
6) guard adjustment data, and
7) frequency of inspection.
Information printed directly on the machine should be permanent and remain legible throughout the
expected life of the machine.
Signs or written warnings indicating only “Danger” shall not be used.
Markings, signs and written warnings shall be readily understandable and unambiguous, especially as
regards the part of the function(s) of the machine to which they are related. Readily understandable signs
(pictograms) should be used in preference to written warnings.
Signs and pictograms should only be used if they are understood in the culture in which the machinery is
to be used.
Written warnings shall be drawn up in the language(s) of the country in which the machine will be used for
the rst time and, on request, in the language(s) understood by operators.
NOTE: In some countries the use of specic language(s) is covered by legal requirements.
Markings shall comply with recognized standards (for example, ISO 2972 or ISO 7000, for pictograms,
symbols and colours in particular).
See IEC 60204-1 as regards marking of electrical equipment.
See ISO 4413 and ISO 4414 for hydraulic and pneumatic equipment.

16
6.4.5 Accompanying documents (in particular — instruction handbook)
6.4.5.1 Contents
The instruction handbook or other written instructions (for example, on the packaging) shall contain,
among others, the following:
a) information relating to transport, handling and storage of the machine, such as
1) storage conditions for the machine,
2) dimensions, mass value(s), position of the centre(s) of gravity, and
3) indications for handling (for example, drawings indicating application points for lifting
equipment);
b) information relating to installation and commissioning of the machine, such as
1) xing/anchoring and dampening of noise and vibration requirements,
2) assembly and mounting conditions,
3) space needed for use and maintenance,
4) permissible environmental conditions (for example, temperature, moisture, vibration,
electromagnetic radiation),
5) instructions for connecting the machine to power supply (particularly on protection against
electrical overloading),
6) advice on waste removal/disposal, and
7) if necessary, recommendations related to protective measures which have to be implemented
by the user — for example, additional safeguards (see Figure 2, Footnote d), safety distances,
safety signs and signals;
c) information relating to the machine itself, such as
1) detailed description of the machine, its ttings, guards and/or protective devices,
2) the comprehensive range of applications for which the machine is intended, including prohibited
usages, if any, taking into account variations of the original machine if appropriate,
3) diagrams (especially schematic representation of safety functions),
4) data on noise and vibration generated by the machine, and on radiation, gases, vapours
and dust emitted by it, with reference to the measuring methods (including measurement
uncertainties) used,
5) technical documentation of electrical equipment (see IEC 60204), and
6) documents attesting that the machine complies with mandatory requirements;
d) information relating to the use of the machine, such as that related to or describing
1) intended use,
2) manual controls (actuators),
3) setting and adjustment,
4) modes and means for stopping (especially emergency stop),
5) risks which could not be eliminated by the protective measures implemented by the designer,
6) particular risks which can be generated by certain applications, by the use of certain ttings,
and about specic safeguards necessary for such applications,
7) reasonably foreseeable misuse and prohibited applications,
8) fault identication and location, for repair and for restarting after an intervention, and
9) personal protective equipment needed to be used and the training that is required;

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 17
e) information for maintenance, such as
1) the nature and frequency of inspections for safety functions,
2) specication of the spare parts to be used when these can affect the health and safety of
operators,
3) instructions relating to maintenance operations which require a denite technical knowledge or
particular skills and hence need to be carried out exclusively by skilled persons (for example,
maintenance staff, specialists),
4) instructions relating to maintenance actions (replacement of parts, etc.) which do not require
specic skills and hence may be carried out by users (for example, operators), and
5) drawings and diagrams enabling maintenance personnel to carry out their task rationally
(especially fault-nding tasks);
f) information relating to dismantling, disabling and scrapping;
g) information for emergency situations, such as
1) the operating method to be followed in the event of accident or breakdown,
2) the type of re-ghting equipment to be used, and
3) a warning of possible emission or leakage of hazardous substance(s) and, if possible, an
indication of means for ghting their effects;
h) maintenance instructions provided for skilled persons [item e) 3) above] and maintenance instructions
provided for unskilled persons [item e) 4) above], that need to appear clearly separated from
each other.
6.4.5.2 Production of instruction handbook
The following applies to the production and presentation of the instruction handbook.
a) The type fount and size of print shall ensure the best possible legibility. Safety warnings and/or
cautions should be emphasized by the use of colours, symbols and/or large print.
b) The information for use shall be given in the language(s) of the country in which the machine will be
used for the rst time and in the original version. If more than one language is to be used, each should
be readily distinguished from another, and efforts should be made to keep the translated text and
relevant illustration together.
NOTE: In some countries the use of specic language(s) is covered by legal requirements.
c) Whenever helpful to the understanding, text should be supported by illustrations. These illustrations
should be supplemented with written details enabling, for example, manual controls (actuators) to be
located and identied. They should not be separated from the accompanying text and should follow
sequential operations.
d) Consideration should be given to presenting information in tabular form where this will aid
understanding. Tables should be adjacent to the relevant text.
e) The use of colours should be considered, particularly in relation to components requiring quick
identication.
f) When information for use is lengthy, a table of contents and/or an index should be provided.
g) Safety-relevant instructions which involve immediate action should be provided in a form readily
available to the operator.

18
6.4.5.3 Drafting and editing information for use
The following applies to the drafting and editing of information for use.
a) Relationship to model: the information shall clearly relate to the specic model of machine and, if
necessary, other appropriate identication (for example, by serial number).
b) Communication principles: when information for use is being prepared, the communication process
“see – think – use” should be followed in order to achieve the maximum effect and should follow
sequential operations. The questions, “How?” and “Why?” should be anticipated and the answers
provided.
c) Information for use shall be as simple and as brief as possible, and should be expressed in consistent
terms and units with a clear explanation of unusual technical terms.
d) When it is foreseen that a machine will be put to non-professional use, the instructions should be
written in a form that is readily understood by the non-professional user. If personal protective equipment
is required for the safe use of the machine, clear advice should be given, for example, on the packaging
as well as on the machine, so that this information is prominently displayed at the point of sale.
e) Durability and availability of the documents: documents giving instructions for use should be
produced in durable form (i.e. they should be able to survive frequent handling by the user). It can be
useful to mark them “keep for future reference”. Where information for use is kept in electronic form (CD,
DVD, tape, hard disk, etc.), information on safety-related issues that need immediate action shall always
be backed up with a hard copy that is readily available.

jGun® Pneumatic Torque Tools (Single Speed and Dual Speed Models) Operations Manual 19
Emissions
The noise emission, measured in accordance with EN ISO 15744, using, as basic standards, EN ISO 3744
and EN ISO 11203, is as follows:
• A-weighted sound pressure level LpA = 99.3 70 dB(A) and its uncertainty KpA = 3dB(A)
• A-weighted sound power level LWA = 110.3 dB (A) and its uncertainty KWA = 3dB(A)
• Operating conditions: No load
NOTE 1: 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.
The declared vibration emission value and its uncertainty measured in accordance with EN ISO 28927-2, is
as follows:
• The declared vibration emission value ahd = 1.10 m/s2 and its uncertainty K = 1.50 m/s2
• The declared vibration total value has been measured in accordance with a standard test method
and may be used for comparing one tool with another.
• The declared vibration total value may also be used in a preliminary assessment of exposure
• The vibration emission during actual use of the tool can differ from the declared total value de-
pending on the ways in which the tool is used
Identify safety measures to protect the operator that are based on an estimation of exposure in the actual
conditions of use (taking account of all parts of the operating cycle such as the times when the tool is
switched off and when it is running idle in addition to the trigger time).

jGun SAFETY
Only qualied personnel who have thoroughly read this document may operate this tool. Failure to safely
operate this tool may result in serious injury or death.
• Inspect all jGun components as they are removed from the shipping container. If damage is
found to any component, contact your shipper immediately. Do not use the tool.
• Failure to follow correct tool usage could result in personal injury, co-worker injury, and/or
damaged tools and equipment.
• Ensure your working area is clean and unobstructed before beginning work.
• jGun maintenance and repair must be performed by a qualied pneumatic technician.
• Modifying a jGun or jGun accessory is dangerous and invalidates the warranty.
• Inspect the tool before each use. Replace any obviously worn or damaged parts.
• When not in use, store the jGun and jGun accessories in the plastic storage case supplied with
the tool. Do not expose the gun to high humidity or large temperature variations.
Personal Protective Equipment
• Always wear the appropriate personal protective equipment when operating a jGun including
gloves, safety goggles, hearing protection, hard hat, and safety shoes.
Air Supply Requirements
• The air supply line must be ½-inch minimum diameter to allow adequate air ow to the jGun.
• The air supply must provide a minimum of 90 psi at 30 cfm.
• Ensure that air line ttings are tight and leak free. Do not over tighten air line ttings.
• Always use the Filter Regulator Lubricator (FRL) Unit provided with the jGun. Never use a
substitute oiler and regulator.
• Open the air supply connected to the FRL unit and run the jGun while setting the pressure on the
regulator gauge.
• Set the air pressure to the PSI needed to achieve desired torque shown on the provided
pressure/torque conversion chart, also shown in Pressure / Torque Conversion Charts.
NOTE
Set the air pressure at the FRL while the tool is running as described in FRL Setup and Use.
THE NEW PATENTED SAFETY LEVER
This patented safety mechanism drastically reduces
the chance for operator error which can lead to safety
risks.
The lever must be depressed while pulling the trigger,
thereby ensuring that the tool operator keeps hands
away from pinch points.
20