Adjusting Leadscrew Backlash; Tensioning/Replacing V-Belts - Grizzly G0801 Owner's Manual

Adjusting Leadscrew
Backlash
Leadscrew backlash is the amount of motion or
"play" in leadscrew rotation before the attached
device begins to move. Leadscrews will always
have a certain amount of backlash that will
increase with normal wear.
Generally, 0.005"–0.010" leadscrew backlash is
acceptable to ensure smooth movement and
reduce the risk of premature thread wear. However,
if you find it necessary to adjust leadscrew back-
lash, perform the following procedure.
Tool Needed
T-Handle Hex Wrench 5mm .............................. 1
To adjust leadscrew backlash:
Tighten or loosen the cap screws on the leadscrew
nuts (see Figures 73–74), then test the amount of
backlash by slowly rocking the handwheels back-
and-forth. Repeat if necessary.
X-Axis
Leadscrew Nut
Figure 73. Location of X-axis leadscrew nut.
Y-Axis
Leadscrew Nut
Figure 74. Y-axis leadscrew nut located under
Y-axis handwheel.
-48-
Inspect V-belts regularly for tension and wear. The
proper amount of belt deflection for this machine
is approximately
belts if they become frayed, cracked, damaged, or
show any other signs of excess wear.
Tensioning V-Belts
The Model G0801/G0802 V-belt tension is con-
trolled by the motor's position relative to the head-
stock. The closer the motor is to the headstock,
the looser the belts, and the farther away from the
headstock, the tighter the belts.
Qty
The motor position is secured by setting the ten-
sion pin, and then tightening the motor lock (see
Figure 75).
Gap
Cap
Screws
Figure 75. Location of motor lock and tension
Gap
Cap
Cap Screws
Screws
Tensioning/
Replacing V-Belts
⁄ " (see Figure 76). Replace the
1
2
pin.
Gap
Model G0801/G0802 (Mfd. Since 09/15)
Tension
Pin
Motor
Lock