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PM-833TV 4-13-21V1.indd Copyright © 2021 Quality Machine Tools, LLC
Figure 4-13 Drawbar fails to clamp R8 toolholders
where it coincides with the top of the spindle. This is
where the bottom of the hex head will be when the
drawbar is shortened.
6. Test other R8 devices to see if this mark will work for
all of them — if not, pick a compromise position.
7. Cut the drawbar above the mark so that the hex
head will coincide with the mark when fully seated.
8. Using the hex head as a drill guide, drill the drawbar
for the roll pin, then re-install.
REPLACING THE DRIVE BELT
Figure 4-11 Servicing the drive belt
1. Remove the front panel, 4 screws, white arrows. 2. Remove the
cover, 6 screws, red arrows (2 at left not visible). 3. Loosen the mo-
tor, 4 socket head screws, black arrows, 6 mm key*. Slide the motor
forward to remove the toothed belt.
* Use a 6 mm hex key. It may be necessary to cut down the short
end of the key.
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