User Manual

Turn the hydraulic pressure off. Ensure that system hydraulic pressure has been reduced to zero before
proceeding. To do this, turn off the hydraulic power unit and exercise the actuator until it stops moving.
Using the provided hydraulic hoses, make connections between the pressure and release ports on the
grip and the pressure and release ports on the load unit or on the external hydraulic grip supply. See your
load unit product manual or hydraulic grip control manual for their port locations.
6. If needed, connect the water supply. Water can heat or cool the grips.
a) Mount the water valve clamp to a load unit column.
b) Connect water lines (supply and drain) between the water lines attached to the columns and the upper
and lower grips.
c) Connect the water supply (and drain) to the water valve/drain mounted to the load unit columns.
7. Tighten the grips.
See “Preload the Spiral Washers” to preload the connector stud. Return to this procedure when done.
8. Install the environmental chamber.
Position the environmental chamber (with its cart) in the load unit so that the actuator extends through the
chamber’s U-plugs. Secure the cart and install the U-plugs. Refer to the environmental chamber
documentation for more information.
9. Install the wedges.
Go to “Change Wedges 647.02 - 647.100” for the procedure to install wedges into the grips.
Install Environmental Chambers Without U-Plugs
Environmental chambers that do not have U-plugs must be installed before the grips are installed. The grips
must be partially disassembled to install them. The following figure shows the components of the grip assembly.
Series 647 Hydraulic Wedge Grips Reference Manual 55
Installation