Spindle Break-In - Grizzly G0824 Owner's Manual

9. Push Emergency Stop/RESET button to turn
lathe OFF, then, without resetting RESET
button, try to restart spindle rotation, as
instructed in Step 8. Spindle should not start.
— If spindle rotation does start with
Emergency Stop/RESET button pressed
in, the Emergency Stop/RESET button
safety is not operating correctly. This
safety feature must operate properly
before continuing operation. Use spindle
lever to stop lathe, disconnect it from
power, and call Tech Support for help.
10. Move spindle lever to OFF (middle) position,
and reset Emergency Stop/RESET button by
twisting it clockwise until it pops out.
11. Restart spindle rotation.
12. Step on foot brake. Spindle should come to a
quick stop.
— If brake pedal has no effect on lathe, push
Emergency Stop/RESET button and call
Tech Support for help.
13. Ensure work lamp functions properly.
14. Use cutting fluid pump switch on control
panel to start pump (see Figure 24 on Page
26), then open valve. Verify that cutting fluid
flows from nozzle, then turn pump OFF.
15. Press power button, then press and brief-
ly hold the jog button (see Figure 24 on
Page 26), then release it. The spindle should
rotate when the jog button is pressed and
come to a complete stop when released.
Congratulations! The test run is complete. Turn
the lathe OFF and perform the following Spindle
Break-In procedure.
Model G0824 (Mfd. Since 12/16)

Spindle Break-In

Before subjecting the spindle to operational loads,
it is essential to complete the break-in process.
This helps maximize the life of spindle bearings
and other precision components by thoroughly
lubricating them before placing them under load.
After spindle break-in is complete, we recommend
changing headstock and gearbox oil to remove
any metal particles or debris that are present from
the assembly and break-in process.
The break-in must be performed in succession
with the Test Run procedure described in this
manual, as the steps in that procedure prepare
the lathe controls for the break-in process.
DO NOT perform this procedure indepen-
dently of the Test Run section. The lathe
could be seriously damaged if the controls
are set differently than instructed in that
section.
To perform the spindle break-in:
1. Successfully complete the Test Run proce-
dure beginning on Page 25.
2.
Run spindle at 70 RPM for 10 minutes in each
direction (first forward and then reverse).
3. Turn lathe OFF. Set spindle speed levers for
125 RPM (see Setting Spindle Speed on
Page 48 for more information), then run lathe
for 5 minutes in each direction.
4. Repeat Step 3 for remaining spindle speeds,
progressively increasing to highest speed
listed on spindle speed chart.
5. Press Emergency Stop/RESET button and
DISCONNECT MACHINE FROM POWER!
Congratulations! The spindle break-in is com-
plete. We recommend changing the headstock
and gearbox oil before operating the machine
further (refer to Lubrication on Page 64).
-27-