Grizzly G9972Z Owner's Manual page 35

Tools Needed
hex Wrench 5mm .............................................. 1
hex Wrench 6mm .............................................. 1
Wrench 10mm ................................................... 1
Wrench 14mm ................................................... 1
retaining Clip Wrench ....................................... 1
nLgi #2 grease ................................ as needed
configuring change Gears
1. disConneCt Lathe FroM poWer!
2. examine the chart in figure 42 or figure 45
to determine the change gear configuration
for the selected feed rate.
Note: The feed rates are given in inches of
carriage travel per revolution of the spindle
(IPR).
3. open the change gear cover, then arrange
the change gears as needed. Leave approxi-
mately 0.002"–0.003" (0.05–0.08mm) back-
lash between the gears.
Note: Before you install the gears, thoroughly
clean them with a stiff brush and mild solvent,
then apply a light coat of NLGI #2 grease to
the teeth.
change Gear "a"
a. Loosen the cap screw securing the pivot
arm, then lower it to disengage the
120/127t gear from change gear "a" (see
figure 43).
Change gear
120/127t
figure 43. Change gear pivot arm in lowered
position.
G9972Z 11" x 26" Lathe w/Gearbox
Qty
4.
Change
gear "a"
Change
gear "b"
5.
Setting the feed Rate Dials
1.
2.
b. remove the e-clip that secures change
gear "a", replace the gear with correct
one, then replace the e-clip.
c. raise the pivot arm so that the 120/127t
gear properly meshes with change gear
"a", then re-tighten the cap screw to
secure it in place.
change Gear "b"
a. Lower the pivot arm as described above.
b. Loosen the square nut on the 120/127t
gear and slide it along the pivot arm and
away from change gear "b".
c. Loosen and remove the cap screw secur-
ing change gear "b", then remove the flat
washer, bushing, and the gear.
d. install the correct change gear "b", the
bushing, flat washer, and cap screw.
Note: If change gear "b" must mesh
with the 120T gear when cutting metric
threads, mount the bushing between the
gear and the headstock to properly align
the gear.
e. slide the 120/127t gear over to properly
mesh with change gear "b", then re-tight-
en the square nut.
f.
raise the pivot arm and secure it in place
as described above.
rotate the spindle by hand and make sure all
change gears are properly meshed and rotat-
ing.
— if the change gears are not properly meshed
or rotating freely, repeat this procedure
until they are.
Close and secure the change gear cover.
Make sure the spindle motor is OFF and the
spindle has come to a complete stop.
examine the chart in figure 42 or figure
45, then correctly set feed rate dials for your
selected feed rate.
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