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VascuLathe
-ACS Hardware Manual
Step 1: Remove power to the stage.
Step 2: Supply air to the stage in order to release the collet.
Step 3: Remove the collet nut by turning it counterclockwise. Spanner wrenches may be necessary for
removal and are available from Aerotech.
Step 4: Remove air pressure from the stage. This will allow the internal springs to relax slightly and ease fur-
ther disassembly.
D A N G E R : The collet cover is under tension from internal springs. Removing the collet cover
screws incorrectly can result in personal harm and damage to the equipment.
Step 5: Refer to
Figure
cannot be removed at 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 four M3 x 0.7 x 12 mm long socket head cap screws and thread them into the holes where the
previous screws were removed. Tighten each one until it bottoms out in its hole.
Step 7: Loosen the four remaining collet cover screws, 1/4 turn at a time. Loosen the screws in a cross pat-
tern (i.e., 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 ten-
sion of the springs entirely. It is then safe to remove the remaining collet cover 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.
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: There are two seals on the piston itself. One is an external seal that seals the piston against its hous-
ing; the other is an internal seal that seals the piston against the collet sleeve. To remove the seals,
carefully pry them out of their housings with a small screwdriver or pick. Use caution not to scratch
the surface of the piston.
Step 13: Thoroughly clean seal mounting surfaces, the chamfers, and all surfaces that the new seals may
come in contact with. Even small particles or debris can damage the seals during installation.
Step 14: Lubricate the new seals with o-ring lubricant as specified in
www.aerotech.com
4-1. Remove every other collet cover screw (i.e., screws 1, 3, 5, and 7). All screws
Chapter 4
Maintenance
Section 4.2. Lubrication and Cleaning
33
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