GREENLEE HW1V Impact Wrenches User Manual

: June 3, 2024
: GREENLEE

HW1 and HW1V Impact Wrenches
OPERATION MANUAL

HW1V Impact Wrenches

Serial Codes BBA and BBB
**** Read and understand all of the instructions and safety information in this manual before operating or servicing this tool.

Description

The Greenlee HW1 and HW1V Impact Wrenches are intended for use with impact- type sockets, screwdriver bits, and wood bits. The operating pressure range is 68.9 to 138 bar (1000 to 2000 psi).
Features include:

Directional spool for forward or reverse operation
Insulated handle for operator comfort and safety
Super Spool™ for use on either open-center or closed-center hydraulic systems
Quick-change hex chuck
Variable torque adjustment (HW1V only)

Safety

Safety is essential in the use and maintenance of Greenlee tools and equipment. This instruction manual and any markings on the tool provide information for avoiding hazards and unsafe practices related to the use of this tool. Observe all of the safety information provided.

Purpose of this Manual

This manual is intended to familiarize all personnel with the safe operation and maintenance procedures for the following Greenlee hydraulic impact wrenches:

HW1	Serial Code BBA
HW1V	Serial Code BBB

Keep this manual available to all personnel.
Replacement manuals are available upon request at no charge at www.greenlee.com.

Other Publications

Tool Owners/Users
SAE Standard J1273 (Hose and Hose Assemblies): Publication 99930323
Authorized Greenlee Service Centers
Repair Manuals:

HW1	Publication 52060655
HW1V	Publication 52061484

Authorized Representative:
Gustav Klauke GmbH
Auf dem Knapp 46
42855 Remscheid
Germany
All specifications are nominal and may change as design improvements occur. Greenlee Tools, Inc. shall not be liable for damages resulting from misapplication or misuse of its products. Super Spool is a trademark of Greenlee Tools, Inc. Super Spool™ is protected by U.S. Patent No. 4548229.
KEEP THIS MANUAL

IMPORTANT SAFETY INFORMATION

SAFETY ALERT SYMBOL
This symbol is used to call your attention to hazards or unsafe practices which could result in an injury or property damage. The signal word, defined below, indicates the severity of the hazard. The message after the signal word provides information for preventing or avoiding the hazard.
DANGER
Immediate hazards which, if not avoided, WILL result in severe injury or death.
WARNING
Hazards which, if not avoided, COULD result in severe injury or death.
CAUTION
Hazards or unsafe practices which, if not avoided, MAY result in injury or property damage.
WARNING
Read and understand all of the instructions and safety information in this manual before operating or servicing this tool.
Failure to observe this warning could result in severe injury or death.
WARNING
Electric shock hazard:
This tool is not insulated. When using this unit near energized electrical lines:

Use only certified non-conductive hoses and proper personal protective equipment.
Select and maintain the hydraulic fluid to meet the minimum dielectric standards required by your safety department.

Failure to observe this warning could result in severe injury or death.
WARNING
Skin injection hazard:

Do not use hands to check for leaks.
Do not hold hose or couplers while the hydraulic system is pressurized.
Depressurize the hydraulic system before servicing.

Oil under pressure easily punctures skin causing serious injury, gangrene, or death. If you are injured by escaping oil, seek medical attention immediately.
WARNING
Wear eye protection when operating or servicing this tool.
Failure to wear eye protection could result in serious eye injury from flying debris or hydraulic oil.
WARNING
Wear hearing protection when using this tool.
Failure to observe this warning could result in serious injury.
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
Arsenic and chromium from chemically-treated lumber.

To reduce your exposure to these chemicals: work in a well ventilated area, and work with approved safety equipment, such as dust masks that are specially designed to filter out microscopic particles.
WARNING

Use accessories that are approved for impact use only. Accessories that are not approved for impact applications can break when used with impact-type tools.
Inspect accessories before use. Discard accessories that have cracks, chips, or gouges.

Failure to observe this warning could result in severe injury or death.
WARNING

Keep all parts of the body away from rotating parts when the tool is in operation. Contact with moving parts can result in severe injury.
Do not change accessories, inspect, or clean tool when it is connected to a power source. Accidental start-up can result in serious injury.
Maintain a firm grip on tool, using both hands at all times. Serious injury can result if an operator does not control the tool.
Do not lock trigger in the power-ON position. Operator can not stop tool when trigger is locked.

Failure to observe these warnings could result in severe injury or death.
WARNING
Tool and accessory may be hot during and after operation.
Contact with hot surfaces could result in serious injury.
WARNING
Do not exceed the following hydraulic power source maximums:

Hydraulic flow: 46 l/min (12 gpm)
Pressure relief: 138 bar (2000 psi)
Back pressure: 13.8 bar (200 psi)

]Failure to observe this warning could result in severe injury or death.
WARNING
Do not disconnect tool, hoses, or fittings while the power source is running or if the hydraulic fluid is hot. Hot hydraulic fluid could cause serious burns.
WARNING
Do not reverse hydraulic flow. Operation with hydraulic flow reversed can cause tool malfunction. Connect the supply (pressure) hose and return (tank) hose to the proper tool ports.
Failure to observe this warning could result in severe injury or death.
CAUTION

Wear protective gloves when handling, removing and installing drill bits. Drill bits can cut even when stationary.
Inspect tool before use. Replace any worn or damaged parts. A damaged or improperly assembled tool can malfunction, injuring nearby personnel.
Inspect the hydraulic hoses and couplings every operating day. Repair or replace if leakage, cracking, wear, or damage is evident. Damaged hoses or couplings can fail, resulting in injury or property damage.
Use this tool for manufacturer’s intended use only. Use other than that which is described in this manual could result in injury or property damage.
Make sure all bystanders are clear of the work area when handling, starting, and operating the tool. Nearby personnel can be injured by flying parts in the event of a tool malfunction.

CAUTION
Prolonged exposure to vibration or very repetitive hand and arm movements may cause injury. Stop using any tool if discomfort, tingling feeling, or pain occurs.
Consult a physician before resuming use of the tool.
IMPORTANT
Procedure for connecting or disconnecting hydraulic hoses, fittings, or components:

Move the flow lever on the hydraulic power source to the OFF position.
Stop the hydraulic power source.
Follow the sequence under “Hose Connections” to prevent pressure buildup. In case some pressure has built up, loosen hoses, fittings, or components slowly.

IMPORTANT
Emergency stop procedure:

Release the trigger.
Shut off the hydraulic power source.

Note: Keep all decals clean and legible, and replace when necessary.

Identification

1. Trigger
2. Quick-Change Chuck
3. Drive Shank
4. Motor Cap
5. Serial Number| 6. Directional Spool
7. OC/CC Trigger Spool
8. Return (Tank) Port
9. Pressure Port
10. Variable Torque Adjustment Spool (HW1V only)
---|---

Specifications

Impact Wrench
Type of Hydraulic System ………………………..Open-center or closed-center
Hydraulic Pressure Port …………………….9/16–18 UNF SAE O-ring Boss
Hydraulic Return Port …………………………3/4–16 UNF SAE O-ring Boss
Output @ 30.3 l/min (8 gpm)
RPM (no load) ……………………………………………… 6500
Impacts per Minute (no load) …………………………. 1300
Torque ………………………………………….. 677 Nm (500 ft-lb)
Drive Size …………………………………..1/2″ square drive w/ 7/16″ hex quick-change chuck
Vibration Level ……………………………………………… 11 m/s2
Noise Level ………………………………………………….120 Lwa
Mass/Weight
HW1 ………………………………………………. 3.0 kg (6.5 lb)
HW1V …………………………………………….. 3.1 kg (6.6 lb)
Length ………………………………………………..208 mm (8.2″)
Width ………………………………………………….107 mm (4.2″)
Height ……………………………………………….280 mm (11.0″)

Hydraulic Power Source

WARNING
Do not exceed the following hydraulic power source maximums:

Hydraulic flow: 46 l/min (12 gpm)
Pressure relief: 138 bar (2000 psi)
Back pressure: 13.8 bar (200 psi)

Failure to observe this warning could result in severe injury or death.
Type of Hydraulic System ………………………..Open-center or closed-center
Flow
Minimum ………………………………….. 15.1 l/min (4 gpm)
Recommended ………….18.9 to 30.3 l/min (5 to 8 gpm)
Maximum ………………………………….. 46 l/min (12 gpm)
Filtration ………………………………………10 Micron (nominal)
Pressure Relief Setting …………………… 138 bar (2000 psi)
Back Pressure (maximum*) ……………… 13.8 bar (200 psi)

13.8 bar (200 psi) is the maximum agreed standard back pressure for the HTMA (Hydraulic Tool Manufacturers Association).
Greenlee tool will operate satisfactorily at this standard.
Hydraulic Power Source (cont’d)
1. Maximum hydraulic fluid temperature must not exceed 60 °C (140 °F). A sufficient oil cooling capacity is needed to limit the hydraulic fluid temperature.
2. Hydraulic flow must not exceed 46 l/min (12 gpm). Install a flow meter in the return line to measure the rate of hydraulic flow before using the tool.
3. Pressure relief valve setting must not exceed 138 bar (2000 psi) at your tool’s maximum flow. Locate the pressure relief valve in the supply circuit to limit excessive hydraulic pressure to the tool.

Hydraulic Schematic

Recommended Hydraulic Fluids
Use any non-detergent, petroleum-based hydraulic fluid which meets the following specifications or HTMA specifications.
S.U.S. @
38 °C (100 °F) ………………………………………. 140 to 225
99 °C (210 °F) ……………………………………. 40 minimum
Flash Point ………………………….. 170 °C (340 °F) minimum
Pour Point ……………………………. -34 °C (-30 °F) minimum

Setting the Super Spool™

The Super Spool allows the tool to be used with either open-center or closed- center hydraulic systems.

Insert a screwdriver into the spool recess.
If using:
• Open-center hydraulic system, turn the Super Spool counterclockwise until it stops.
• Closed-center hydraulic system, turn the Super Spool clockwise until it stops.

Installing and Removing Accessories

WARNING

Use accessories that are approved for impact use only. Accessories that are not approved for impact applications can break when used with impact-type tools.
Inspect accessories before use. Discard accessories that have cracks, chips, or gouges.

Failure to observe this warning could result in severe injury or death.
Impact Bits and Screwdriver Bits
Greenlee recommends using Greenlee impact-style bits.
WARNING
Some bits may whip or bend under sideload.

Do not use bits with a long spiral and center support.
When using an impact bit, run the power source at minimum flow.

Failure to observe these warnings could result in severe injury or death.

Inspect the quick change chuck. Remove any dirt or other contamination.
Slide and hold the chuck away from the tool and remove the 1/2″ adapter.
Insert the drill bit into the tool and release the chuck.
To remove the drill bit, slide and hold the chuck away from the tool and remove the bit.

1/2″ Socket Drive Adapter and Sockets

Inspect the quick change chuck. Remove any dirt or other contamination.
Slide and hold the chuck away from the tool and install the 1/2″ adapter. Release the chuck.
Install the socket onto the adapter.
To remove the socket adapter, remove the socket from the adapter. Slide and hold the chuck away from the tool and remove the adapter.

Hoses and Fittings

Installation and Maintenance
Refer to publication 99930323, SAE J1273
(Hose and Hose Assemblies).
Replacement
Refer to a Greenlee catalog or publication 99910322,
Low Pressure Quick Couplers, Adapters and Hoses.
WARNING
Do not disconnect tool, hoses, or fittings while the power source is running or if the hydraulic fluid is hot. Hot hydraulic fluid could cause serious burns.
Typical Setup

Hose Connections

Tool Port Identification
Match the markings on your tool to this table.

Pressure Port	Return Port
P	T

or
|

Connecting Hoses

Move the flow lever on the hydraulic power source to the OFF position.
Stop the hydraulic power source.
Connect the return hose to the return port on the hydraulic power source, and then to the return port on the tool.
Connect the pressure hose to the pressure port on the tool, then to the pressure port on the hydraulic power source.

Disconnecting Hoses

Move the flow lever on the hydraulic power source to the OFF position.
Stop the hydraulic power source.
Disconnect the pressure hose from the hydraulic power source, and then from the tool.
Disconnect the return hose from the tool, and then from the hydraulic power source.
Install dust caps over the ports to prevent contamination.

Setup

WARNING
Do not exceed the following hydraulic power source maximums:

Hydraulic flow: 46 l/min (12 gpm)
Pressure relief: 138 bar (2000 psi)
Back pressure: 13.8 bar (200 psi)

Failure to observe this warning could result in severe injury or death.
WARNING
Do not reverse hydraulic flow. Operation with hydraulic flow reversed can cause tool malfunction. Connect the supply (pressure) hose and return (tank) hose to the proper tool ports.
Failure to observe this warning could result in severe injury or death.

Stop the hydraulic power source.
Install an accessory according to the instructions under “Installing and Removing Accessories.”
Connect the tool to the power source according to the instructions under “Hose Connections.”

Operation

WARNING
Electric shock hazard:
This tool is not insulated. When using this unit near energized electrical lines:

Use only certified non-conductive hoses and proper personal protective equipment.
Select and maintain the hydraulic fluid to meet the minimum dielectric standards required by your safety department.

Failure to observe this warning could result in severe injury or death.
WARNING
Skin injection hazard:

Do not use hands to check for leaks.
Do not hold hose or couplers while the hydraulic system is pressurized.
Depressurize the hydraulic system before servicing.

Oil under pressure easily punctures skin causing serious injury, gangrene, or death. If you are injured by escaping oil, seek medical attention immediately.
WARNING
Do not change accessories, inspect or clean tool when it is connected to a power source. Accidental start-up can result in serious injury.
Failure to observe this warning could result in severe injury or death.
WARNING
Wear eye protection when operating or servicing this tool.
Failure to wear eye protection could result in serious eye injury from flying debris or hydraulic oil.

IMPORTANT
Emergency stop procedure:

Release the trigger.
Shut off the hydraulic power source.

Operation (cont’d)

Start the power source.
Note: Allow the power source to run for a few minutes to warm the hydraulic fluid.
Set the directional spool to the appropriate position (forward or reverse).
CAUTION
Do not change the position of the directional spool while the tool is operating. Allow the tool to stop before changing direction.
Failure to observe this precaution can result in property damage.
Grasp the handle. Place your other hand on the top of the tool or on the auxiliary handle. This will allow you to apply leverage while operating the tool.
To start the tool, squeeze the trigger.
• HW1V Only: Use the variable torque adjustment to achieve the necessary amount of torque. Setting “H” is for high torque, “M” is for medium torque, and “L” is for low torque. In the illustration below, the wrench is set to the high torque position. Turn 90° clockwise for medium torque and 180° clockwise for low torque.
• HW1 and HW1V: If 5 seconds of impacting does not loosen a bolt, nut, etc., stop impacting and use some other method of removal. Continued impacting will cause severe wear on the impact mechanism.
To stop the tool, release the trigger.
When the tool is not in use, stop the power source to reduce heat and wear on tool components.

Maintenance

WARNING
Wear eye protection when operating or servicing this tool.
Failure to wear eye protection could result in serious eye injury from flying debris or hydraulic oil.
WARNING
Do not change accessories, inspect, or clean tool when it is connected to a power source. Accidental start-up can result in serious injury.
Failure to observe this warning could result in severe injury or death.
Use this maintenance schedule to maximize the tool’s service life.
Note:

Keep all decals clean and legible, and replace when necessary.
When disposing of any components (hydraulic hoses, hydraulic fluid, worn parts, etc.), do so in accordance with federal, state, and local laws or ordinances.

Daily

Wipe all tool surfaces clean.
Inspect the hydraulic hoses and fittings for signs of leaks, cracks, wear, or damage. Replace if necessary.
Install dust caps over the hydraulic ports when the tool is disconnected.

Monthly
Perform a thorough inspection of the hydraulic hoses and fittings as described in publication 99930323, SAE J1273 (Hose and Hose Assemblies).

Troubleshooting

Before troubleshooting, determine whether the problem is in the tool, the hoses, or the power source. Substitute a tool, hoses, or power source known to be in good
working order to identify the item that is not operating.
If the problem is in the tool, see the troubleshooting table below. If the problem is in the power source, see the troubleshooting section of the power source instruction manual.

TProblem ,..	Probable Cause	Probable Remedy
Tool does not operate.	Improper power source.	Refer to “Specifications.”

Verify that the power source meets the specifications.
Hydraulic fluid level low.| Check the fluid level. Check system for leaks.
Incorrect hydraulic fluid viscosity.| Refer to “Recommended Hydraulic Fluids” in the “Specifications” section.
Variable torque adjustment spool turned to low position with too low of flow rate.| Turn variable torque adjustment spool to the high or medium setting.
‘Tool operates slowly erratically.| Hydraulic fluid cold.| Allow fluid to warm to the operating temperature. Actuate the tool intermittently to reduce the warming time.
Hose connections at tool reversed.| Depressurize hydraulic system. Switch the hose connections.
Power source not adjusted correctly.| Refer to the power source operator, manual for setting the flow and pressure. Set the flow and pressure to correspond with the tool.
Air in the hydraulic system.| Refer to the power source manufacturer, instructions for removing air from the system.
Incorrect hydraulic fluid viscosity.| Refer to “Recommended Hydraulic Fluids” in the “Specifications” section.
Variable torque adjustment spool incorrectly set, limiting hydraulic fluid flow to the motor.| Turn variable torque adjustment spool to a higher setting.
Tool feels hot.| Hydraulic fluid level low.| Check the fluid level. Check system for leaks.
Incorrect hydraulic fluid viscosity.| Refer to “Recommended Hydraulic Fluids” in the “Specifications” section.
Hydraulic fluid dirty.| Drain reservoir, flush, and fill with clean fluid. Change filter.

Accessories

Adapters, impact bits, and sockets are available through your Greenlee distributor. For a complete list of accessories, refer to our catalog or visit our web site at
www.greenlee.com.

4455 Boeing Drive • Rockford, IL 61109-2988 • USA •815-397-7070
An ISO 9001 Company • ©2021 Greenlee Tools, Inc.