MTS 318 Load Unit User Manual
Page 105
Routine Maintenance Overview Checklist
318 Load Unit
Maintenance
105
G.
Using the offset wrench, loosen (but do not remove) the self-locking
nut.
Mechanical Null Adjustor Pin
H. Turn the adjustor pin until the scribe mark on the adjustor pin is
pointing toward the base of the servovalve.
I.
Tighten the self-locking nut until 1.13 to 1.36 N·m (10 to 12 lb-in) of
torque is needed to turn the adjustor pin, ensuring that the scribe mark
remains pointing toward the base of the servovalve.
J.
Remove the torque wrench and offset wrench.
4. Finish the procedure.
A. Ensure that the actuator is warmed up. If not, go to Step 1.
B. Remove hydraulic and electric power from the system.
C. Reconnect the servovalve cable.
D. Reapply hydraulic and electric power to the system.
E.
See your controller manual to complete the valve balance procedure.
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