Chapter 3: Operation
50 M47-17027-EN
Remove grip jaws - G1-style crossheads
Equipment required
• A suitable stable platform such as a man-lift, stairs, or ladder. The platform must be of sufficient
height so that the operator can reach the tension crosshead.
• Hex keys (supplied), see Table 11 on page 49 for sizes
Recommended procedure
1. Remove the grip jaws from the tension crosshead:
a. Filler plates can be removed although this is not necessary.
b. Remove the grip stop plate (5, Figure 10) from the top of the tension crosshead by removing the
two socket head cap screws (6) that hold the plate to the crosshead (use hex key stated in
Table 11).
c. Turn the crank handle to place the grip jaws in the fully opened position.
d. Hold the crank handle and lift each grip jaw out of the grip pocket.
2. Remove the grip jaws from the adjustable crosshead (it is not necessary to remove the bumper
plate (11) from the bottom of the crosshead; the grip jaws can be removed one at a time from the top
of the grip pocket):
a. Remove all filler plates from the grip pocket.
b. Rotate the crank handle to close the grip jaws until the grip jaws clear the pinion (grip jaws will
not extend any further). This will raise the upper portion of the grip jaws out of the grip pocket.
c. Hold the grip jaws in place with the crank handle and grasp one of the grip jaws.
d. Continue to hold the grip jaw and rotate the crank handle to lower the remaining jaw; this
provides clearance for removal of the first grip jaw.
e. Lift the first grip jaw out of the grip pocket.
f. Rotate the crank handle to raise the remaining grip jaw.
g. Grasp the grip jaw and remove it from the grip pocket.
Install grip jaws - G7-style crossheads
Equipment and supplies required
• A suitable stable platform such as a man-lift, stairs, or ladder. The platform must be of sufficient
height so that the operator can reach the tension crosshead.
• 4 mm hex key (supplied)
All equipment must be supplied by the customer unless noted as “supplied”. For a list of equipment that
was supplied with the system, refer to “Ancillary parts” on page 87.
All equipment must be supplied by the customer unless noted as “supplied”. For a list of equipment that
was supplied with the system, refer to “Ancillary parts” on page 87.
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