Grizzly G0554Z - Manual (Page 64)

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Model g0554z (Mfg 01/09+)
4. remove the chuck or faceplate from the spin-
dle, then open the left side door to expose the
outboard end of the spindle and its end cap,
as shown in
Figure 94.
5. remove the three cap screws securing the
end cap, then, taking care not to damage
the gasket, remove the end cap from the
spindle to expose the spindle nut, as shown
in
Figure 95.
Note: Record the orientation of the oil drain
chute on the inside of the end cap so that you
can properly re-install the cap later.
Spindle bearing
preload
your lathe is shipped from the factory with the
preload of the spindle tapered roller bearings
properly adjusted.
over time, the bearings will wear and reduce
the preload, causing excessive spindle end-play,
which is one cause for poor workpiece finish.
if the spindle becomes hotter than you can com-
fortably leave your hand on after an operation,
there may be too much preload and premature
wear of the spindle bearings and components
could occur.
if your lathe exhibits either of these symptoms,
you can adjust the spindle bearing preload.
Tools Needed Qty
hex Wrenches 4, 5 mm ............................1 Each
spanner Wrench 75-84mm ............................... 1
spindle lock Key ............................................... 1
dial indicator with Magnetic Base ..................... 1
heavy dead Blow hammer ............................... 1
Wooden Block ................................................... 1
sealant for headstock Cover ............ As needed
To adjust the spindle bearing preload:
1. run the lathe for approximately 20 minutes at
a medium speed to bring the spindle compo-
nents to their normal working temperature.
2. disConnECt lAthE FroM poWEr!
3. remove the headstock cover to enable the
use of the spanner wrench in later steps.
Note: Do not allow any debris to fall into the
headstock when removing the cover.
Tip: Tightly cover the headstock with clean
plastic, such as plastic food wrap, to prevent
foreign objects dropping into the headstock
during this procedure.
Figure 94. spindle outboard end cap exposed.
spindle
End Cap
Figure 95. spindle nut exposed.
spindle nut