MTS Series 647 Hydraulic Wedge Grips - Manual (Page 71)

7. Install the cooling water lines.
a) Mount the cooling water valve clamp to a load unit column.
b) Connect the cooling water lines to the extension rods as shown in the figure “Extension Rod Installation
Components” and between the extension rods and the cooling water valve/drain.
c) Connect a cooling water line between the upper and lower extension rods.
8. Tighten the grips. Go to “Preload the Spiral Washers” to preload all of the connector studs. Return to this
procedure when done.
9. Install the wedges. Go to “Change Wedges 647.02 - 647.100” for the procedure to install wedges into the
grips.
Align the Wedge Openings
Once the grips are lightly tightened, check the alignment between the upper and lower grips; the wedge
openings should be in the same plane. If the wedge openings are out of alignment, adjust the lower grip first,
and then align the upper grip to the lower grip.
The grips can be aligned several ways:
• Spiral washers
• Shim washers
• It might be possible to rotate the actuator rod to achieve the desired orientation.
Spiral washers can offer up to 30° of rotation. They are also used to preload the connector studs to prevent
backlash. Spiral washers are installed between each grip and the mating member of the force train. They are
used to preload the connector stud. When placing the spiral washers on the connector stud, rotate the washers
until they are fully closed; this is the minimum thickness for the spiral washers. Then refer to “Preload the
Spiral Washers.”
Shim washers are used to help align the upper and lower grips. Each shim kit includes washers of different
thicknesses. A combination of the shims can change the rotation of the grip with reference to the point at
which the grip is tightened into position. Shim washers are not necessary on the actuator side of the force
train if the actuator can be rotated.
Grip Rotations and Shim Part Number Kit Part
Number
1 Turn (360°) 1/2 Turn (180°) 1/4 Turn (90°) 1/8 Turn (45°) 1/16 Turn
(22.5°)
443665-14 443665-16 443665-17 443665-13 443665-18 521050-01
443665-18 443665-16 443665-17 443665-13 443665-18 521050-02
443665-03 443665-19 443665-20 443665-07 443665-21 521050-03
1
Indicates that two shims are required to achieve the rotation.
Series 647 Hydraulic Wedge Grips Reference Manual 71
Installation