17
TROUBLESHOOTING
NOTE!
Turn off and disconnect the compressed air before troubleshooting a compressed air tool.
Problems
Possible causes/Corrective measures
Rotating tool: The tool rotates slowly or
not at all.
The motor's slave gas valve or intake hole is blocked by
foreign material. Check and clean if necessary.
The rotor blade is broken. Replace the rotor blade.
The O-ring is worn or incorrectly located. Replace drive
or bearing.
The tool cannot be stopped.
The O-ring is worn or incorrectly located. Replace the
O-ring.
The valve rod is deformed. Replace the slave valve rod.
The motor does not work.
The rotor is blocked by foreign material. Clean.
The bearing is damaged. Replace the bearing.
The air pressure is too low. Increase the air pressure
according to the specification.
The tool does not work, increased
amount of exhaust emissions.
The rotor blade is blocked. Remove foreign materials.
The motor jams due to rust. Clean and top up the oil.
The tool rotates normally, but the torque
is continually reduced.
The punching unit is damaged. Replace damaged parts.
Insufficient lubricating oil. Top up with lubricating oil.
Defective shaft head or shaft sleeve. Replace the
damaged part.
Pneumatic tool: The tool rotates slowly
or only a small amount of air emerges
through the outlet hole.
The gas duct is blocked by foreign material. Clean.
The motor is blocked internally by foreign material.
Clean.
The speed control is incorrectly set. Adjust the control.
The clamp cannot hold the drill head.
The snap ring is worn. Remove and replace the snap
ring.
Cam-type tools: The motor rotates, but
the shaft does not move or rotates
abnormally.
The cam wheel fingers are worn. Replace worn parts.
The spring is defective or worn. Replace the spring.
Drawing pin-type tools: The clamps do
not attach or cannot be pulled off.
The pin plate is worn. Clean the cam fingers.
The sleeve spring is worn. Replace the spring.
Reduced oil pressure spring or incorrectly positioned oil
rod. Adjust.
Insertion-type tools: The insertion force
is continually reduced.
Increasing friction between piston and cylinder.
Lubricate the cylinder.
The valve is leaking air. Replace damaged or worn
parts.
The water/oil chamber is not working.
The holder is not properly fitted or the air is not
regulated correctly via the oil adjustment button. Seal
the holder and check the O-ring for gas leaks.
Subject to printing errors and design changes over which we have no control. In the event of problems,
please contact our service department.
Jula Postorder AB, Box 363, SE-532 24 SKARA, SWEDEN
www.jula.com
