Grizzly G0791, Owner'S Manual

Page: 92 / 132

-90-
Model G0791 (Mfd. Since 9/15)
—If there is more than
1
⁄
4
" deflection when
each belt is pushed with moderate pres-
sure, loosen the motor mount bolts, lower
the motor, adjust belt tension as required,
then tighten the bolts.
6. Secure end gear cover.
Replacing V-Belts
1. DISCONNECT MACHINE FROM POWER!
2. Remove end gear cover.
3. Loosen motor mount bolts (see Figure 149
on the previous page), slide motor up, and
remove V-belts.
Note: It may be more convenient to access
the motor mount bolts if you first remove the
rear splash guard.
4. Install new V-belts as a matched set so they
equally share the load.
5. Tension belts (refer to Tensioning/Replacing
V-Belt on the previous page.)
6. Secure end gear cover.
Figure 150. Correct timing-belt deflection.
1
⁄
4
"
5. Check belt tension: Each belt is correctly
tensioned when there is approximately
1
⁄
4
"
deflection when it is pushed with moderate
pressure, as shown in
Figure 150.
Installing/Removing
Gap Insert
This lathe is equipped with a removable gap
insert that will allow for turning large diameter
workpieces. The gap was seated, preloaded, and
then ground for precise bedway mating and align-
ment at the factory.
Removing the gap can cause the lathe insert to
slightly spring out of shape. When re-installed,
there is no guarantee that original alignment and
flush mating will be the same. For this reason,
removing the gap is considered a permanent
alteration to the lathe, even if it is later re-installed.
Tools Needed Qty
Open-End Wrench 14mm .................................. 1
Hex Wrench 8mm .............................................. 1
Heavy Dead Blow Hammer ............................... 1
Miscellaneous C-Clamps ................ As Required
Wooden Blocks ............................... As Required
3. Tighten dowel pin jack nuts (see Figure 151)
to draw pins from gap.
1. DISCONNECT MACHINE FROM POWER!
2. Remove four cap screws that secure gap to
bed (see Figure 151).
Removing Gap Insert
Figure 151. Gap retaining fasteners.
Cap
Screws
(2 of 4)
Preload
Cap Screw
Dowel Pin
& Jack Nut
(1 of 2)