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6. MAINTENANCE & ADJUSTMENT
Please refer to this chapter for machine's problem, solution and maintenance to obtain
the best function and prolong service life of the lathe.
6-1 Headstock
1. To avoid the headstock cover oil leaking: Once the headstock cover is opened,
please use rags to clean the connecting surface, apply some grease sealant, and
then user can close the cover and tighten the socket screws.
2. To avoid the returning oil route being blocked: There are two reasons which
cause the oil leaking from headstock front cover; one is over oiled; the other is
that the returning oil route is blocked. User should take off the headstock cover.
Then blow air into the small hole, which is located on the top of the front bearing,
by air gun several times. And rotate the spindle at the same time to clean up the
blocked returning oil path.
3. Spindle bearing adjustment: The front and middle bearings of the spindle is high
precision taper roller type. It is required to adjust the bearings to have suitable
preload for maintaining the high accuracy and the best turning functions. After
long usage of the lathe, the spindle lock nut may become loose a little bit and
result in uneven cutting surface. For adjustment, loosen the set screws by
hexagon/Allen wrench. Then tighten the spindle lock nut to obtain the suitable
preload. Do not over tighten as excessive preload will make the bearings hot,
damage the rotating surface of the bearings and slow down the bearing's rotation
ability. After adjustment, please be sure to tighten the set screws on the lock nuts
completely. Please also use dead blow hammer to hit the two ends of the spindle
to prevent spindle bearings damage if they are slant.
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