Setting the Super Spool™
The Super Spool allows the tool to be used with either
open-center or closed-center hydraulic systems.
1. Insert a screwdriver into the spool recess.
2. 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.
Greenlee Tools, Inc.
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H8508 Series Impact Wrenches
Installing and Removing Accessories
• 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.
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.
Center Support
1. Inspect the quick change chuck. Remove any dirt or
other contamination.
2. Slide and hold the chuck away from the tool and
remove the 1/2" adapter.
3. Insert the drill bit into the tool and release the chuck.
4. 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
1. Inspect the quick change chuck. Remove any dirt or
other contamination.
2. Slide and hold the chuck away from the tool and
install the 1/2" adapter. Release the chuck.
3. Install the socket onto the adapter.
4. To remove the socket adapter, remove the socket
from the adapter. Slide and hold the chuck away
from the tool and remove the adapter.
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4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070
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Long Spiral