96-8100 1-15-96
66
MECHANICAL SERVICE
HAAS AUTOMATION, INC.
SERVICE
MANUAL
VF-SERIES
8. SPINDLE MOTOR & TRANSMISSION
PLEASE READ THIS SECTION IN ITS ENTIRETY BEFORE ATTEMPTING TO REMOVE OR REPLACE
TRANSMISSION.
NOTE: The drive belt's tension should be adjusted after every service on the transmission or spindle.
8.1 MOTOR REMOVAL (VF-0)
1. Ensure the VMC is ON. You will need to raise and lower the head stock to remove the transmission. At this time,
raise the Z-axis to the full up position.
2. Remove the cover panels from head stock area ("Head Stock Removal" section).
3. Remove the tool release piston assembly ("Tool Release Piston Assembly" section).
4. Press the POWER OFF button on the control panel and turn the main breaker off. If there is an external breaker box,
turn it off and lock it out.
5. Disconnect the air supply from the back panel of the machine.
6. Disconnect all of the electrical and pneumatic lines from the solenoid bracket on top of the spindle motor assembly.
Mark any connections that have not been previously labeled for reassembly.
7. Remove the two SHCS holding the cable carrier to the solenoid bracket and position the cable carrier so as to not
interfere with removal of the motor. It may be necessary to tie the cable carrier back to the Z-axis motor to keep it in
place.
8. If machine is equipped with Through the Spindle Coolant option, remove the pressure regulator and bracket from
the old transmission and install them on the new transmission.
9. Remove the four SHCS and carefully lift the spindle motor assembly off the spindle head. Take care to not damage
the drive pulley during removal.
NOTE: It is recommended that the HAAS Transmission Hoist be used in this operation (Refer to "Hoist Pre-Assembly",
later in this section, for assembly and setup).
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