APT 17728 Maintenance And Repair Manual

TOOL MAINTENANCE & REPAIR INFORMATION
Always use Chipping Hammers with
in-line oilers.
FIELD OPERATION
Before:
1. For 650 Series, tighten handle to 200 ft. lbs.
2. For 450 Series, ensure all nuts and bolts on
handle are tight.
3. Flush Air Tool oil or 10W grade equivalent into
air inlet before connecting air hose. Install in-line
oiler.
4. Check retainer and spring for wear or cracks.
Replace retainer if worn.
5. Clean any water and/or dirt from air hose before
connecting it to the tool.
During:
1. For your safety and that of others, keep tool
against work at all times!
2. When moving from one work area to another,
shut off tool.
3. Never run the tool without a steel bit or chisel
in it.
4. Do not use tool as a wedge or prying instrument
5. When changing tool bit always shut air supply
off and disconnect hose.
6. Always use an in-line oiler when operating tool.
After:
1. Flush tool with cleaning solvent, then refill with
Air Tool oil or 10W grade equivalent.
2. Do not leave tool in water or in dirt.
3. For 650 Series, tighten handle to 200 ft. lbs.
4. For 450 Series, ensure all nuts and bolts on
handle are tight.
5. Store the tool well oiled.
REMEMBER: PREVENTIVE MAINTENANCE
WILL ASSURE MAXIMUM
PERFORMANCE FROM ALL
OF YOUR APT TOOLS.
14710 MAPLE AVENUE • GARDENA, CA 90248 • (310) 538-2600 • FAX (310) 323-6656
CHIPPING HAMMERS
AMERICAN PNEUMATIC TOOL
TROUBLE SHOOTING GUIDE
If tool runs erratically:
1. Insure handle is on tight. Retighten to 200 ft. lbs.
torque (650 Series Chipping Hammers).
2. Check all nuts and bolts to ensure they are tight
(450 Series Chipping Hammers).
3. Flush cleaning solvent through the tool and flush
Air Tool oil or 10W grade equivalent into air inlet.
4. Check for wear in front bushing (nozzle). Check
for wear in the shank of the steel chisel. A worn
steel shank or a worn front bushing means loss
of air seal and less than optimum tool perfor-
mance.
If tool has a throttle valve air leak:
Remove plug and inspect "o" rings or sealing
surfaces for damage.
If tool is not hitting hard enough:
1 Check for wear in front bushing (nozzle).
2 Insure handle is on tight. Retighten to 200 ft. lbs.
torque.
3 Check all nuts and bolts to ensure that they are
tight (450 Series Chipping Hammers).
4 If front bushing is not worn and handle is on
tight, then check for wear on internal parts, if
worn, they should be replaced. Check clear-
ances between piston and cylinder very
carefully.
5 Check tool internally for rust and/or dirt.
If you cannot shut the tool off:
1 Immediately turn off air source, then disconnect
air supply.
2 Check the throttle valve for damaged or missing
o'rings.
APT
5 - 1