MTS Series 322 Load Frames - Manual (Page 73)

Series 322 Load Unit Maintenance 73
7. Tighten each lock’s cap screw until its piston bottoms out. Then loosen and
hand-tighten each cap screw.
8. Loosen each of the hydraulic locks’ cap screws 1/4 turn.
9. Turn on electrical power at the test controller if you have not already done
so.
10. Reset any active interlocks at the test controller.
11. Turn on high hydraulic pressure.
12. Return the Lock Control to the lock crosshead position to pressurize the
hydraulic locks.
13. Fully loosen the manual crosshead locking bolts. Then turn the Lock
Control to the unlock crosshead position.
14. Move the crosshead, locking and unlocking it, to check for smooth
operation.
Tighten Bottom out
position
Loosen, then
hand tighten
Loosen1/4 turn