MTS Series 248 Actuators - Manual (Page 43)

Series 248 Actuator Product Information Maintenance 43
Maintenance
The Series 248 Actuators are designed for extended periods of operation without
extensive maintenance requirements.
Changing the servovalve/actuator configuration will impact the actuator’s
maximum attached mass for cushion design limit.
Operating an actuator outside of its design limit can result in injury to
personenel or damage to the equipment.
Do not alter the given servovalve/actuator configuration.
A summary of the routine maintenance procedures follows:
Weekly
Clean exposed areas of the actuator piston rod with a clean, dry, lint-free rag
weekly, or after every 40 hours of continuous operation. If the actuator is
continually exposed to a dirty operating environment, clean the piston rod on a
daily basis.
Monthly Inspect the actuator piston rod and seals for excessive wear or leakage. Small
scratches in the axial direction of the piston rod or polishing of the rod surface
are considered normal operating wear.
As needed
External oil leakage is an indicator of seal wear. Have the actuator seals changed
if necessary. Actuator assemblies may require more or less frequent seal changes
depending on usage. External oil leakage or decreased performance are
indicators of seal wear.
WARNING