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Mechanical Specifications and Installation
Step 5: Referring to
Figure
once as the cap is under tension from several springs and will be damaged or cause bodily harm if
removed without caution.
Step 6: Obtain [QTY. 4] M4 x 0.7 x 12 mm long socket head cap screws and thread them into the holes
where the previous screws were removed in step 5. Tighten each one until it bottoms out in its hole.
Step 7: Begin removal by loosening the four shorter (factory installed) screws, 1/4 turn at a time. Loosen the
screws in a cross pattern. For example, loosen screw number 2, then screw number 6, then screw
number 8, then screw number 4, then return to screw number 2. Repeat this process until the longer
screws are supporting the tension of the springs entirely. It is then safe to remove the shorter
screws completely.
Step 8: Using the same method as in step 7, remove the longer screws until the spring tension is completely
relieved.
Step 9: Carefully slide the collet piston assembly out from its housing. Use caution not to tilt the piston
assembly in its housing as this could cause damage to the housing, seals, or piston itself.
Step 10: It is now safe to remove the collet cover retaining ring. This can be done with a flat-head screwdriver
or a pair of needle nosed pliers.
Step 11: Remove the collet cover and the springs from the collet piston.
Step 12: Remove the collet sleeve and collet sleeve O-ring.
Step 13: Thoroughly clean the new collet sleeve and nut as well as all old components. Inspect the seals and
O-ring for damage or excessive wear and replace if necessary.
Step 14: Insert the collet sleeve O-ring into its groove. Place the new collet sleeve into the shaft. Although
the collet sleeve is piloted to ease assembly, it may require some indicating of the taper to achieve
the best possible runnout. Finger tighten all eight screws, then tighten in a cross pattern to a torque
of 1.8-2.0 Nm (16-18 in-lbs).
Step 15: Reinstall the collet piston assembly into its housing. Use of O-ring lubricant is recommended during
reassembly. There are chamfers to help guide the piston into place, but use caution not to twist or
damage the seals.
Step 16: Replace the collet piston assembly.
Step 17: Installation of the collet cover is the reverse of removal. Begin with the four 12 mm long screws in
every other hole and tighten until they bottom out in their respective holes. Then install the shorter
original screws into the remaining holes and tighten in a cross pattern until the collet cover is seated
against the shaft. Install the remaining four original screws. Torque all screws to a final torque of 1.8-
2.0 Nm (16-18 in-lbs).
Step 18: Apply air pressure to the stage in order to install the collet.
Step 19: Install the new collet and collet nut as described in
Step 20: Restore the air supply to the original settings and restore power to the stage.
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2-9, remove every other collet cover screw. DO NOT remove all of the screws at
Chapter 2
ACS Hardware Manual
Section 2.5.1.
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