Grizzly G0709 - Manual (Page 70)

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Model G0709 (Mfg. Since 5/11)
4. place the chuck wrench in the cam-lock
socket to keep the spindle from rotating, and
loosen the outer spanner nut (see
figure
109) two turns. removing the spider hub is
not necessary.
figure 109. spindle spanner nuts.
inner
spanner
nut
outer
spanner
nut
spider
hub
5. loosen the inner spanner nut one turn. if
the spanner nut is too difficult to break loose
easily, you may have to tap on the outboard
spindle tube as explained in
Step 6 to help
unseat the spindle bearings.
NOTICE
for the next step, DO NOT strike the wood-
en block with excessive force. If you do,
you can cause the tapered roller bearings
to indent the mating races. If this dam-
age occurs, one or more spindle bearings
will have to be replaced, as this damage
will generate vibration at higher spindle
speeds.
6. since the spindle bearings may unseat eas-
ily without great force, hold a wood block
against the outboard end of the spindle, and
tap the block a few times with a three or four
pound hammer (see
figure 110). your goal
is to slide the spindle forward just enough to
introduce spindle end-play that can be heard
or felt by hand.
figure 110. un-seating spindle bearings to intro-
duce spindle end-play.
7. place a dial indicator on the cross slide and
move the carriage toward the headstock until
the contact point of the indicator touches the
spindle face (see
figure 111).
figure 111. dial indicator setup.
8. Move the carriage an additional 0.100" toward
the headstock, and zero the dial indicator.