JET
7
User Maintenance
Inspect chipping hammer before each use.
Ensure that retainer and lock spring are secured.
After use, wipe down the tool with a rag.
Periodically apply light coat of oil to exposed metal
surfaces to inhibit rust. (Do not get oil on exhaust
deflector which will compromise its gripping
surface.)
Lubrication
The hammer should be lubricated
daily
(or before
each use) with air tool oil through the air inlet.
During continual operation, it should be re-oiled
every 1 to 2 hours. This can be done with an in-
line oiler, or manually. If done manually, proceed
as follows:
1.
Disconnect air hose from tool.
2.
Place 4 or 5 drops of air tool oil into air inlet.
NOTE: Air tool oil not provided; it is available
at most major hardware and tool stores. SAE
#10 oil or sewing machine oil may be used
as a substitute. Do not use detergent oil.
3.
Re-connect air. Run hammer at low throttle
without load for a few seconds to distribute
the oil throughout tool.
4.
When finished operating chipping hammer,
disconnect air hose. Wipe off housing with a
dry cloth. Place 4 or 5 drops of air tool oil into
air inlet; re-connect air and run tool for a few
seconds to distribute the oil. Disconnect air.
Storage
Avoid storing the chipping hammer in very humid
locations which promotes rusting of internal
mechanisms. Always oil the tool and disconnect
air hose before storage.
Air System Requirements
1.
Use proper air hose size (refer to tool
specifications). The hose should be just long
enough to serve the working area. Excessive
hose length will cause pressure drop.
2.
Make sure air compressor supplies clean,
dry air at correct CFM for the tool.
3.
Set air pressure to 90 psi.
Excess air pressure
and/
or unclean air will shorten the tool’s
life and may create a hazardous situation.
4.
Drain water from air compressor tank daily,
as well as any condensation from air lines.
Water in the air line may enter the tool and
cause damage.
5.
Change filters on the air system on a regular
basis.
6.
Air-line
pressure
may
be
increased
accordingly to compensate for extra-long air
hoses (usually over 25 feet). Inside diameter
of hose should be minimum 1/2-inch.
General Air Tool
Information
If the air tool is not performing according to
specifications, the following are among the most
common causes. (See also
“Troubleshooting”
section.)
•
Contaminated air such as a dirty air system
or water in the system.
•
Using wrong size tool for the job.
•
Poor maintenance practices, such as using
excessive air pressure or air volume.
•
Improper or no lubrication.
Rule of Thumb
If it takes more than 8 seconds to tighten or loosen
a bolt or nut with an air impact wrench at
maximum setting, the air wrench is too small or
the air compressor CFM is not powerful enough
for the job. Continued use in either capacity will
cause damage to the tool.
Tool Pressure
JET Air Tools operate on 70-to-100 psi (pounds
per square inch) air pressure measured at the tool
when the tool is operating. Set tool to 90 psi
unless indicated otherwise. Pressure in excess of
100 psi will shorten the life of the tool.
Air System Recommendations
Equip the air compressor intake with a
replaceable air filter that can be easily cleaned.
