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Mount fixtures
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Change height of test opening
The height of the test opening can be changed. To change the height, adjust the position of the
crosshead. The recommended procedures are provided in the following sections. Follow the appropriate
procedure for the crosshead style of your frame.
Adjust the position of a J1-style crosshead
Equipment required
• Lifting force - either the frame’s hydraulic cylinder (as detailed in procedure) or a crane or fork truck
• 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 Superbolt tensioners on the crosshead.
• A 5/16 in hex key (supplied)
• Blocks of lumber to support the crosshead
• A spanner wrench (supplied)
Recommended procedure
1. Start the system; see page 34. Start the HPS.
2. Extend or retract the hydraulic cylinder so that it has enough stroke in the appropriate direction to
obtain the desired crosshead height:
• To lower the crosshead, extend the hydraulic cylinder so that it has enough stroke to retract and
lower the crosshead.
Always wear appropriate personal protective equipment when preparing, operating and
maintaining this equipment. Personal protective equipment should include, but is not
limited to, eye protection and head protection. Other types of personal protective
equipment may also be needed. You must perform your own risk assessment and take
appropriate measures to protect yourself from harm.
When adjusting the crosshead, be sure the crosshead is secured in place once it is
positioned as desired:
• When the frame is equipped with a J1-style crosshead, be sure all retaining rings are properly in
place and secured (see “Adjust the position of a J1-style crosshead”).
• When the frame is equipped with a J3-style crosshead, be sure that the crosshead support collars
are positioned on the columns so they are in contact with the bottom of the crosshead and they
are tightened to the required torque (see “Adjust the position of a J3-style crosshead”.
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 57.
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