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3. Maintenance
3-1. Checks
The following checks are required for proper cylinder operation.
1) Smooth operation
2) Changes in piston speed and cycle time
3) Abnormal stroke
4) Looseness of mounting bolt and rod end nuts
5) Looseness of mounting frame and excessive deflection
6) Internal and external leakage (Change in output)
7) Damage to the piston rod sliding surface
8) Clogging and discharge drainage of the air filter
9) Lubrication of rotating parts (double knuckle joint, clevis pin, etc.)
10) Position of auto switches
When any abnormality is found as a result of checking the points above, eliminate causes and take necessary
measures such as retightening screws and the application of grease.
！
W a r n i n g
As a minimum, maintenance should be performed according to the above
items. Perform additional maintenance as necessary.
Improper handling can cause damage and malfunction of equipment and machinery.
Removal of equipment, and supply/exhaust of compressed air.
Ensure that drop prevention measures and safe lock out of the moving parts are taken, the
power of the facility and supply air is shut off and the compressed air in the system is
exhausted before removing the equipment.
Before restarting the equipment, confirm that measures are taken to prevent sudden action.
3-2. Replacement of seals
It is possible to replace the rod seal, piston seal, cylinder tube gasket and wear ring for φ20 to
φ40.
！
W a r n i n g
Only people who have sufficient knowledge and experience are allowed to
replace seals.
The person who disassembles and reassembles the cylinder is responsible for the safety of the
product.
！
C a u t i o n
When replacing seals, carefully handle parts to prevent injury to your hands
or fingers on the corners of parts.
－19－
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