Connect Hydraulics; Unlock The Crosshead - MTS Systems Landmark 370 Series Product Information

Connect Hydraulics

This procedure describes how to connect the load unit to the hydraulic power source. The load unit
may be connected directly to the hydraulic power unit (also called HPU), to hydraulic plumbing in the
workplace, or through a hydraulic service manifold.
Caution:
Hydraulic fluid must be properly filtered.
Failure to maintain clean hydraulic fluid will lead to poor system performance and expensive
repairs.
MTS supplied HPUs incorporate the necessary filtration. If the source of hydraulic fluid pressure
is customer supplied, it is the customer's responsibility to ensure proper filtration.
Note: The internal hydraulic connections from the actuator manifold and accessories such as
the hydraulic lifts and locks should already be made.
1. Connect the return line from the HPU to the hydraulic port on the manifold labeled "R".
2. Connect the pressure line from the HPU to the hydraulic port on the manifold labeled "P".
3. Connect the drain line(s) to the HPU.
A. Connect a drain line from the hydraulic port on the manifold (labeled "D") to the HPU.
B. If applicable, connect a drain line from the hydraulic lift/locks and hydraulic grip control
to the HPU.
The lift/lock and grip supply drain lines are connected together inside the frame. A
short drain hose is supplied to be connected to a second drain line connected to the
HPU.
4. Turn on the HPU and check for any hydraulic pressure leaks.
5. Turn on the actuator manifold (also called a hydraulic service manifold or HSM) and check for
hydraulic leaks in the load unit.
6. If you have hydraulic lifts, bleed the air out of the hydraulic lift cylinders.

Unlock the Crosshead

When the load unit is shipped, the crosshead is clamped to the columns with the manual clamping bolts
in the crosshead.
Note: This procedure only applies to load units equipped with hydraulic crosshead positioning
and locks.
MTS Landmark™ Tabletop Load Units - Product Information
Installation
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