JETYD j-Gun series User manual

Operations Manual
jGun
Dual Speed jGun
FRL Unit
LoaDisc Reaction Washer
JETYD Corporation
218 Island Road
Mahwah, NJ 07430
Phone: [phone]
Fax: [phone]
Email: [email protected]

ii JETYD Operations Manual
© 2006 Inc.

Contents
iii JETYD Operations Manual
Contents
Warranty ...................................................................................................................................... vi
Certification.................................................................................................................................. vi
jGun Overview ..............................................................................................................................1
jGun Safety...................................................................................................................................1
Personal Protective Equipment..............................................................................................1
Air Supply Requirements.......................................................................................................2
Reaction Arm or Washer........................................................................................................2
Key Operating Safety Points..................................................................................................9
jGun Setup and Use....................................................................................................................11
Setting a Torque Value........................................................................................................11
Changing the Drive Direction...............................................................................................12
Operating the jGun...............................................................................................................12
Loosening a Fastener..........................................................................................................14
jGun Repair and Maintenance....................................................................................................14
Maintaining Hoses and Fittings............................................................................................14
Removing the Square Drive.................................................................................................15
Installing the Square Drive...................................................................................................16
Lubricating the Air Motor......................................................................................................16
Removing the Air Motor.......................................................................................................17
Calibration............................................................................................................................17
Dual Speed jGun.........................................................................................................................18
Shifting Between Modes......................................................................................................19
Tool Operation.....................................................................................................................20
Operation with a Socket and Reaction Arm.........................................................................20
Operation with a Load Disc..................................................................................................21
First use of Dual Speed jGun...............................................................................................22
jGun Single Speed Parts Diagram..............................................................................................23
jGun Single Speed Parts List......................................................................................................24
jGun Dual Speed Parts Diagram.................................................................................................25
jGun Dual Speed Parts List.........................................................................................................26
Filter/Regulator/Lubricator (FRL) Unit Overview.........................................................................27
FRL Safety...........................................................................................................................27
Personal Protective Equipment............................................................................................28

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iv JETYD Operations Manual
Air Supply Requirements.....................................................................................................28
FRL Setup and Use .............................................................................................................29
Important FRL Operating Procedures..................................................................................29
Emptying the Filter Reservoir...............................................................................................29
Adjusting Air Pressure .........................................................................................................31
Filling the Lubricator Reservoir............................................................................................32
Adjusting the Flow................................................................................................................33
Repair and Maintenance......................................................................................................33
Hoses and Fittings...............................................................................................................33
LoaDisc Reaction Washer Overview ..........................................................................................34
Safety 35
Personal Protective Equipment............................................................................................35
LoaDisc Requirements.........................................................................................................36
LoaDisc Setup and Use.......................................................................................................36
Important Preparation Procedures................................................................................36
Important Installation Procedures.................................................................................36

Contents
JETYD Operations Manual v
Figures
Figure 1. Reaction Arm.........................................................................................................3
Figure 2. LoaDisc and Socket ..............................................................................................3
Figure 3. Installing a Reaction Arm ......................................................................................6
Figure 4. Reaction Arm Installed ..........................................................................................7
Figure 5. Tightening Reaction Arm Set Screw......................................................................7
Figure 6. Installing jGun Socket............................................................................................8
Figure 7. Installing Socket Locking Pin and Retaining Ring.................................................8
Figure 8. Placement of Reaction Arm...................................................................................9
Figure 9. jGun Drive Direction Lever ..................................................................................12
Figure 10. jGun Operation....................................................................................................13
Figure 11. Using the jGun with a Reaction Washer..............................................................14
Figure 12. Removing the jGun Square Drive Snap Ring......................................................15
Figure 13. Dual Speed jGun with Handle .............................................................................18
Figure 14. Maximum Torque Setting (Left) and Maximum Speed Setting (Right)................19
Figure 15. Reaction Arm for dual-speed jGun......................................................................20
Figure 16. FRL Unit ..............................................................................................................27
Figure 17. Emptying the FRL Filter Reservoir ......................................................................30
Figure 18. Detaching FRL Reservoir....................................................................................30
Figure 19. FRL Unit – Lubricator 2/3rds Full of Oil...............................................................31
Figure 20. Adjusting FRL Regulator.....................................................................................32
Figure 21. Adjusting FRL Oil Flow........................................................................................33
Figure 22. LoaDisc Washer and Socket...............................................................................34
Figure 23. LoaDisc Socket Mounted on jGun.......................................................................35
Figure 24. LoaDisc Washer Installed....................................................................................37
Figure 25. Aligning LoaDisc Socket Set Screw with Machined Recess in jGun Splines......38
Figure 26. Tightening LoaDisc Set Screw............................................................................38
Tables
Table 1. Bolt Torque Specifications...................................................................................11

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vi JETYD Operations Manual
Warranty
The j-Gun has a one year limited warranty. Every JETYD tool is tested before leaving the
factory and is warranted to be free from defects in workmanship and materials. JETYD 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 JETYD authorized personnel, abuse,
normal wear and tear, lack of maintenance, or accidents.
The repair and replacement remedies described herein are exclusive. In no event shall JETYD 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 [phone].
Certification
The jGun is certified according to tests performed to the EN 1127-1: 1997 standard.
II 2G c IIB T6

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JETYD Operations Manual 1
jGun Overview
The jGun pneumatic torque wrench is designed to safely and accurately deliver up to 5,200 ft-lbs
of torque onto a fastener. This is accomplished using a patented planetary gearbox torque
multiplier system and an appropriate reaction arm or LoaDisc™ Reaction Washer. The torque
multiplier produces torque ratios of up to 700:1 while the reaction arm or washer is used to
absorb the high counter rotational force produced as the final torque value is reached. At final
torque value, the jGun safely stalls out, leaving the fastener tightened to specification.
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 and the dual-speed jGun.
jGun Safety
Only qualified 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 qualified 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

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Air Supply Requirements
The air supply line must be ½-inch minimum diameter to allow adequate air flow
to the jGun.
The air supply must provide a minimum of 90 psi at 30 cfm.
Ensure that air line fittings are tight and leak free. Do not over tighten air line
fittings.
Always use the Filter Regulator Lubricator (FRL) Unit provided with the jGun.
Never use a substitute oiler and regulator.
Set the air pressure at the FRL while the tool is running as described in
FRL Setup and Use.
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.
Reaction Arm or Washer
Choose the correct reaction arm for the job. The jGun is shipped with a standard
length reaction arm, but your gun may have been ordered with a custom reaction
arm for a specific purpose.

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JETYD Operations Manual 3
Figure 1. Reaction Arm
The universal LoaDisc™ reaction washer may be used for all applications in
place of a standard reaction arm.
Figure 2. LoaDisc and Socket

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4 JETYD Operations Manual
Never modify a reaction arm.
Never modify a reaction arm. Modifying a reaction arm may cause
personal injury and tool damage.
Modifying a reaction arm voids the reaction arm and jGun warranty.
Contact the jGun factory to have a custom reaction arm manufactured.

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JETYD Operations Manual 5
DUAL-SPEED GUNS MUST ONLY BE OPERATED
WITH THE PROPER REACTION ARM SHOWN IN
THE PICTURE BELOW.
WITH THIS ARM IN PLACE THE GUN IS
PREVENTED FROM GOING INTO
HIGH-SPEED MODE. THE REACTION ARM
IS NOT USED IN HIGH SPEED MODE.
SAFETY APPARATUS MUST
NOT BE TAMPERED WITH.
DOING SO WILL PUT THE
OPERATOR AT RISK OF
INJURY.

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6 JETYD Operations Manual
Reaction Arm and Socket Installation
Choose the correct reaction arm for the job. The jGun is shipped with a standard
length reaction arm, but your gun may have been ordered with custom-length
reaction arm for a specific purpose.
If using the LoaDisc™ reaction washer, follow installation instructions in
LoaDisc Reaction Washer Overview.
Clean the reaction arm and jGun barrel mating surfaces before installing the
reaction arm.
Slide the reaction arm onto the jGun barrel with the reaction arm extension facing
out.
Figure 3. Installing a Reaction Arm
Always install the reaction arm with the extension facing away from the
gun.
Failure to install the reaction arm correctly could result in the reaction
arm coming in contact with your hand or other another part of your
body, causing personal injury.

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JETYD Operations Manual 7
Figure 4. Reaction Arm Installed
Lock the reaction arm to the jGun by aligning the set-screw with the hole in the
splined section and then tightening the set screw firmly.
Figure 5. Tightening Reaction Arm Set Screw

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8 JETYD Operations Manual
Place the appropriately sized socket onto the jGun barrel.
Figure 6. Installing jGun Socket
Install the socket locking pin and retaining ring.
Figure 7. Installing Socket Locking Pin and Retaining Ring

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JETYD Operations Manual 9
Key Operating Safety Points
Ensure that the reaction arm is in direct contact with an appropriate immovable
object before beginning to tighten the fastener.
Figure 8. Placement of Reaction Arm
Using the LoaDisc™ reaction washer eliminates external moving parts and
increases worker safety. Refer to LoaDisc Reaction Washer Overview.
Failure to have the reaction arm in direct contact with an appropriate
immovable object before beginning to tighten the fastener could result
in loss of control of the tool and personal injury.
Keep all body parts clear of the reaction arm and reaction arm contact point
(immovable object).

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10 JETYD Operations Manual
Do not place any part of your body between the reaction arm and an
appropriate immovable object at any time while a fastener is being
torqued.
Personal injury may occur if any portion of your body is located
between the reaction arm and the immovable object when the fastener
is being torqued.
Ensure the jGun barrel is in a straight line with relation to the stud and that the
socket is fully engaged onto the fastener.
As the tool takes up the bolt load, the jGun may shift.

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JETYD Operations Manual 11
jGun Setup and Use
Proper setup and use of the jGun before and during installation ensures accurate results and safe
operation. The FRL Unit provided with the jGun must be used with the hose provided to ensure
the tool’s durability. See the FRL Unit Overview section below for more information.
Proper installation and use of reaction arms increases worker safety and job efficiency. The
LoaDisc reaction washer is a universal solution for tool reaction on all applications and may be
used in place of a reaction arm. See LoaDisc Reaction Washer Overview for more details.
Setting a Torque Value
1. Determine the torque value for the fastener to be tightened, as shown in the Bolt Torque
Specifications table. Table 1. Bolt Torque Specifications
SAE1 SAE2
30,000PSI ASTM 193 Grade B7 Bolt Gr. 7 A/F Heavy Hex Nut Foot Pounds Estimated Load
1 inch 7/8 inch 1-7/16 inches 300 18,150 lbf
1-1/8 inches 1 inch 1-5/8 inches 425 23,690 lbf
1-1/4 inches 600 29,955 lbf
1-3/8 inches 1-1/8 inches 1-3/16 inches 700 36,990 lbf
1-1/4 inches 2 inches 800 46,776 lbf
1-1/2 inches 900 44,760 lbf
1-5/8 inches 1-3/8 inches 2-3/16 inches 1,250 53,400 lbf
1-1/2 inches 2-3/8 inches 1,500 64617 lbf
1-3/4 inches 1,600 62,400 lbf
1-7/8 inches 1,800 72,300 lbs
1-5/8 inches 2-9/16 inches 2,000 76,540 lbs
2 inches 2,200 83,100 lbs
1-3/4 inches 2-3/4 inches 2,600 89,440 lbs
2-1/4 inches 3,000 106,800 lbs
1-7/8 inches 2-15/16 inches 3,700 110,680 lbs
2-1/2 inches 2 inches 3-1/8 inches 4,000 133,200 lbs
2-3/4 inches 5,100 162,900 lbs
2-1/4 inches 3-1/2 inches 6,000 168,200 lbs
3 inches 7,000 195,300 lbs
2-1/2 inches 3-7/8 inches 8,000 213,120 lbs
3-1/4 inches 9,000 230,700 lbs
3-1/2 inches 2-3/4 inches 4-1/4 inches 10,000 268,800 lbs
3-3/4 inches 3 inches 4-5/8 inches 13,000 310,200 lbs
4 inches 14,500 354,000 lbs
3-1/4 inches 5 inches 16,500 369,120 lbs
4-1/4 inches 19,500 401,400 lbs
The Data Above is based on bolts lubricated to manufacturer's specifications. Due
to a variation in friction, we recommend in extreme cases to check with the bolt
manufacturer, as the chart represents a guideline only.

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12 JETYD Operations Manual
2. Determine the air pressure needed to achieve the desired torque by consulting the
Pressure/Torque Conversion Chart provided with each tool.
3. Open the air supply connected to the FRL unit and run the torque wrench while setting
the pressure on the gauge.
The torque wrench must be running while the pressure is being set.
When the torque wrench is stopped, the gauge displays a slightly
higher pressure than was set with the jGun running. This is normal,
proper torque is delivered under working load.
Changing the Drive Direction
1. To change the square drive direction from forward to reverse or vice versa:
2. Move the directional lever on the back cover to the left (Tighten) or right (Loosen).
Figure 9. jGun Drive Direction Lever
3. Be sure the lever is fully engaged in either direction before operating the gun.
Operating the jGun
To operate the jGun:
1. Place the correct size impact socket on the square drive and secure it with the locking pin
and ring.
2. Ensure that the square drive is fully engaged into the socket.

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JETYD Operations Manual 13
3. Engage the socket onto the nut.
4. Make sure the socket is fully engaged onto the nut.
5. Ensure that the reaction arm is placed firmly against a stationary surface such as an
adjacent nut, a flange, or equipment housing. (If using the LoaDisc™ reaction washer in
place of a standard reaction arm ensure that it is setup according to the steps in the
LoaDisc Reaction Washer Overview section.)
6. Apply momentary pressure to the torque wrench trigger to ensure proper socket
engagement and reaction arm placement.
Figure 10. jGun Operation
7. Torque the fastener by depressing the trigger until socket stops turning and air bypasses
the motor.
Be sure the reaction arm is fully engaged and located on a solid, secure reaction
point. For added safety, remain clear of the rear of the reaction arm during
operation. Also, when initially applying the tool, pressurize the system
momentarily; if the tool tends to ride up or creep, stop and readjust the reaction
arm to a more solid and secure position.

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14 JETYD Operations Manual
Loosening a Fastener
1. Set the FRL Pressure to max PSI as listed on Pressure/Torque Conversion Chart.
2. Fully engage the torque wrench socket on the nut.
3. Either place the reaction arm firmly against a stationary surface or engage the LoaDisc
Driver over the reaction washer.
Figure 11. Using the jGun with a Reaction Washer
4. Ensure the torque wrench is set to the loosening direction.
5. Remove the fastener.
jGun Repair and Maintenance
Although the FRL Unit keeps the jGun self-maintained by continuously provided pneumatic tool
oil to the tool during operation, proper repair and preventative maintenance will ensure the full
life span of your tool.
Maintaining Hoses and Fittings
Visually inspect air lines and air line fittings before tool use
Replace worn or leaking air lines
Tighten leaky fittings