10/29/2020 REV. 003 30
the fitting. If the end of the hose looks uneven or worn, cut off the bad portion of hose and
reassemble the hose into the push release fitting. If the leak continues, and the tapping
capacity is affected, replace the fitting.
b) If the air leak is not from the push release fitting then (3) other possibilities exist: 1. The push
release fitting may be loose and needs tightened. When tightening the push release fitting you
MUST PLACE A SECOND WRENCH ON THE BLACK STEEL INLET OF THE AIR MOTOR.
2. The throttle pin inside the air motor might need adjusted. Typically this will result in the
motor trying to stay running all the time, but sometimes just a small air leak is present out of
the exhaust. If this condition exists, contact Midwest Specialties and have the motor serviced.
3. the air leak may be the result of a cracked housing. If the push release fitting was over
tightened or tightened without the use of a second wrench on the black steal fitting of the
motor, or if the motor was dropped the housing may be cracked and need replaced. Contact
Midwest Specialties and provide the model number off the air motor for service information.
8. The arm does not balance nor adjust to support the air motor.
a) Replace the gas cylinder. Contact FlexArm for replacement cylinders. (Provide the “C16-xxxxx”
number printed on the tube of the cylinder).
b) Check the movement of the cylinder adjusters themselves. The dowel pins should move freely
in the slots of the plates. Moving the dowel pin toward the BOTTOM increases the cylinder
pressure and increases the holding force.
9. The tap does not stop turning when it reaches the bottom of a blind hole.
a) Make sure a tap holder with a safety clutch (torque style) is being used.
b) Adjust the torque setting on the torque-style tap holder. Holders are preset for mild steel and
may need slight adjustments depending on the material being tapped. See the torque setting
chart in the tap holder adjustment section on the FlexArm manual.
c) Check the condition of the tap for wear; always use sharp, 2- or 3-flute taps.
d) Check the condition of the torque style tap holder. If the retaining ring is missing or the holder
appears to be worn or damaged, the holder should be replaced. The tap holders will wear out
with time and are considered perishable tooling.
10. The balls in the tap holder keep breaking.
a) Verify that there is no obstruction in the minimum clearance area that is restricting the
downward path of the tap holder. Once the collar is depressed on the holder, the tap should
slide into the holder fairly easy. Do not force the tap into the holder. If the tap will not slide into
the holder, you should verify that the shank and square of the tap are correct for the holder
dimensions.
b) Verify that the tap holder and the quick-change chuck aren’t striking the table or any other
surface before, during or after the tapping process.
c) Check for excessive shavings, grinding dust, etc., that could be getting into the tap holder or
quick-change chuck collier and causing premature wear.
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