Instron AutoX, Operator'S Manual

Page: 50 / 60

Chapter: Maintenance and Parts
50 M16-16654-EN
You can remove and replace the knife edges without removing the protectors. Use a
2mm hex key to remove the M3 screw. Remove the knife edge and replace it with a new
one. Replace the M3 screw and tighten it.
Replacing the Return Spring
Prolonged use eventually weakens the return springs on the extensometer arms (see
Figure 15
on page 50 ). Replacement springs are provided in the ancillary parts kit.
To remove the spring, pinch it between your fingers and lift it out. Compress the new
spring between your fingers and replace it.
Figure 15. Knife Edges and Return Spring
Knife edges
M3 x 6mm screws
Protector
M3 x8mm screws
Return spring shown
Exploded view of
knife edges shown on
upper arm
on lower arm