Servicing; Troubleshooting - Holzstar DB 900 Operating Instructions Manual

3. Occasionally unscrew the tailstock spindle, clean it
and spray it with dry lubricant. Grease the threaded
spindle.
4. Check the clamping of the tailstock and tool rest and
readjust if necessary.
5. Check drive belt and replace if necessary. The check
should be carried out after approx. 100 operating
hours.

10.3Servicing

As a result of wear and tear, servicing work may have to
be carried out on the machine.
ATTENTION!
Servicing work may only be carried out by qualified
personnel with mechanical knowledge.
Fault Possible cause
Motor does not start No mains voltage.
Switch, capacitor are defec-
tive.
Electrical extension conduc-
tor is defective.
Holes become larger Spindle head and tailstock
than the drill used. are not parallel.
The workpiece is flut- Workpiece loosens during
tering work.
No centering.
Speed too high.
The tool rest or the The eccentric clamp is too
tailstock can no lon- loose.
ger be clamped..
DB-Series | Version 3.09
Lubrication
NOTE!
During the maintenance of the lathe, all moving parts
must be lubricated at least once a month. If required,
the parts can be lubricated at shorter intervals
The belt cover must be removed to lubricate the shift and
drive shafts. Only an adhesive grease may be used for
this, as it can otherwise lead to malfunctions of the belt!
Guides, quills and bearings must be lubricated with com-
mercially available grease!
The points to be lubricated are shown in Figure 17.
Lubricating points
Fig. 17: Lubricating points

11 Troubleshooting

Solution
Check mains fuse.
Have checked by a qualified electrician.
Pull the mains plug, check and replace if necessary.
Adjust spindle head to tailstock tip. To do this, insert the
face driver and the moving tailstock tip. Push the tailstock
forward and align with the points.
Observe the working instructions in the operating instructi-
ons.
Observe chapter "Working instructions" in the operating in-
structions.
Select a lower speed.
Tighten the hexagon nuts on the underside. This only has
to be in contact and not tightened.
Troubleshooting
15