MTS Series 215 Rotary Actuator - Manual (Page 63)

Actuator Performance Checks
Series 215 Rotary Actuator Product Manual Maintenance 63
Excessive cross vane
flow
Excessive cross vane flow, as measured during actuator performance checks,
may indicate actuator component damage or excessive wear.
Above normal cross vane flow typically indicates that the actuator rotor or
cylinder has been damaged. Actuator disassembly to inspect actuator
components and wear surfaces may be required.
Contact MTS for assistance.
Abnormal drainback
port flow
Abnormal drainback port fluid flow, as measured during actuator performance
checks, may indicate actuator component damage or excessive wear. Actuator
disassembly to inspect actuator components and wear surfaces may be required.
Contact MTS for assistance.
Maximum stiction
exceeded
Exceeding maximum stiction, as measured during actuator performance checks,
can indicate abnormal internal friction at high torque values. This condition can
prevent the actuator from reaching its full torque output.
Actuator disassembly to inspect actuator components and wear surfaces may be
required. Thrust bearing wear surfaces should receive particular attention.
Contact MTS for assistance.
Low pressure seal
leaks
Fluid leakage noted on either actuator rotor shaft end may indicate a low pressure
seal leak.
After removing the ADT/RVDT, flange adapter, and seal retainer, inspect the low
pressure seals for wear and replace if needed.
The following table provides the seal kit part numbers necessary to replace the
seals for each rotary actuator model.
Contact MTS for assistance.
Model 215 Rotary Actuator Internal Seal Kits
A CTUATOR M ODEL S EAL K IT N UMBER
215.32C 479171-01
215.35C 363716-01
215.41C 363716-01
215.42C 363716-01
215.45C 445272-01
215.51C 445272-01