Bearing Preload - Grizzly G0824 Owner's Manual

Bearing Preload

This lathe is shipped from the factory with the
spindle bearing preload adjusted. If the spindle
ever develops a bit of end-play and the workpiece
finish suffers, you can adjust the bearing pre-
load to remove the end-play and improve the
workpiece finish.
Adjusting the bearing preload requires using a
spanner wrench or a punch and hammer. You
can either purchase the spanner wrench at a tool
store or fabricate one, using the diagram shown
in Figure 139.
Fabricate pin to / " D x
7
32
Figure 139. Spanner wrench diagram.
Tools Needed
Spanner Wrench................................................ 1
Chuck Key ......................................................... 1
Dead Blow Hammer .......................................... 1
Piece of Scrap Wood......................................... 1
Dial Indicator ..................................................... 1
Hex Wrench 6mm .............................................. 1
To adjust preload:
1. Run lathe for 20 minutes on high speed to
bring lathe to a normal temperature.
2. DISCONNECT MACHINE FROM POWER!
Model G0824 (Mfd. Since 12/16)
Fabricate from CRS
or HRS bar stock
/ " L and weld.
1
4
Qty
3. Remove chuck, then shift spindle to neutral
by positioning spindle speed lever between
"3" and "4" and speed range lever between
"L" and "H", as shown in Figure 140.
Speed
Lever
Set Between
"3" & "4"
Figure 140. Spindle speed levers set to neutral.
4.
Place chuck key in cam-lock socket and keep
the spindle from rotating.
5.
Using a spanner wrench, or hammer-
and-punch, rotate outer spanner nut (see
Figure 141) counterclockwise and remove it.
Figure 141. Loosening outer spanner nut.
6.
Loosen inner spanner nut one turn.
Note: You may have to tap on the outboard
end of the spindle as explained in Step 7, to
help unload the spindle and break the span-
ner nut loose.
Speed
Range
Lever
Set Between
"L" & "H"
Outer
Spanner
Nut
-83-