This procedure tells you how to replace the Z axis linear guide on the ST machine. This procedure also applicable to other machines as the linear guide mounting methods are the same.
Remove all of the sheet metal parts that obstructing the access to the linear guide before performing this procedure.
Note: Only replace one linear guide at the time.
Replace the second linear guide.
Repeat the steps 2 and 3 for the second linear guide.
Float the ballnut
With the ballnut mounting bolts snug, move the axis over the full travel multiple times.
Note: Use the Jog Lock function or command the slow movement with the G code. Do not use the jog wheel.
Torque the ballnut mounting bolts.
Check the machine alignment after replacing the linear guides.
Refer to the Haas Fastener Torque Specifications for the torque values.