MTS Series 322 Load Frames - Manual (Page 49)

Make Connections, Bleed Lifts, Tighten Columns
Series 322 Load Unit Installation 49
2. Bleed Hydraulic Lift Cylinders.
Bleed both hydraulic lift cylinders. Refer to “Load Unit: Bleed the
Hydraulic Lift Cylinders” on page 69 for the procedure.
Mistakenly loosening the bolts for the hydraulic locks along with the
crosshead’s manual locking bolts could let the crosshead slip, especially
when it is under load.
You could be hurt and your equipment damaged.
3. If your load unit has hydraulic locks, loosen the crosshead’s manual locking
bolts following the pattern in the following figure.
4. Unlock the crosshead. Raise and lower your crosshead several times. This
aligns the columns to the crosshead travel before final torque is applied to
the column cap screws.
3 4
1 2
3 4
1 1 2
1 2
Load Unit Rating 100 kN (22 kip)
Load Unit Rating 250 kN (55 kip)
Load Unit Rating 500 kN (110 kip)