96-8100
1-15-96
50
MECHANICAL SERVICE
HAAS
AUTOMATION, INC.
S E R V I C E M A N U A L
VF-S
ERIES
3.3 TENSION ADJUSTMENT
NOTE:
The drive belt's tension should be adjusted after every service on the transmission or spindle of the machine.
1. Turn the machine ON. Position the spindle head casting at a level that will allow you to work on the
drive belt comfortably.
2. Remove the cover panels from the head stock area as shown in "Head Covers Removal" section.
3. Remove the tool release piston assembly in accordance with appropriate section.
4. Screw a 3/8-16 x 1¼" bolt into each of the rearmost mounting holes for the tool release piston
assembly on the spindle head casting. The bolt should protrude ½"-¾" above the casting.
VF-1, VF-2, VF-3, VF-4:
5. Loosen the six SHCS holding the transmission to the spindle head casting.
6. Place the pry bar between the transmission and the bolt in the spindle head and force the transmission back until the
belt tension is set. The belt tension should be set moderately tight. If it is set too tight, the belt will whine when the
assembly is at speed; and if it is set too loose, if will vibrate during accelerations and decelerations.
7. Tighten the SHCS holding the transmission to the spindle head casting.
8. Recheck the tension and repeat steps 5-7, if necessary.
VF-0:
9. Loosen the four SHCS holding the motor plate to the spindle head casting.
10. Using the pry bar, force the motor plate back until the belt tension is set. The belt tension should be set moderately
tight. If it is set too tight, the belt will whine when the assembly is at speed; and if it is set too loose, it will vibrate during
accelerations and decelerations.
11. Retighten the SHCS holding the motor plate to the spindle head casting.
Summary of Contents for VF-SERIES
Page 180: ...1 15 96 96 8100 177 TABLEOFCONTENTS TECHNICAL REFERENCE SERVICE M A N U A L VF SERIES ...
Page 235: ...96 8100 1 15 96 232 VF SERIES S E R V I C E M A N U A L ASSEMBLY DRAWINGS VF 1 COLUMN ...
Page 237: ...96 8100 1 15 96 234 VF SERIES S E R V I C E M A N U A L ASSEMBLY DRAWINGS VF 1 LEADSCREW ...
Page 239: ...96 8100 1 15 96 236 VF SERIES S E R V I C E M A N U A L ASSEMBLY DRAWINGS VF 3 COLUMN ...
Page 241: ...96 8100 1 15 96 238 VF SERIES S E R V I C E M A N U A L ASSEMBLY DRAWINGS VF 3 LEADSCREW ...
Page 245: ...96 8100 1 15 96 242 VF SERIES S E R V I C E M A N U A L ASSEMBLY DRAWINGS 3 4 2 1 ...