Grizzly G0704 Leadscrew Backlash, Battery Replacement, To adjust the Y-axis leadscrew nut

Battery Cover

Figure 57. Battery replacement.

2. Remove the old battery, dispose of it accord- ing to state and federal regulations, then replace it with a new one.

Leadscrew Backlash

To adjust the Y-axis leadscrew nut:

1. Locate

the leadscrew nut

underneath the

When you turn the handwheels to adjust the posi-

table through the hole in the base under the

rubber way cover.

tion of the table, you will notice slight play (back-

lash) in the handwheel before the table begins to

2.

Tighten

the

adjustment

screws on

the

move. If this play is greater than 0.008" (measured

leadscrew

nut in

the

same manner

as

with the dial at the base of each handwheel), then

described

for

the

X-axis

leadscrew

adjust-

you will need to adjust the leadscrew nuts.

ment.

To reach the adjustment screws on the leadscrew

3.

Test the adjustment by

turning one

of

the

nut, you may have to fabricate extensions for

cross handwheels. The ideal amount of play

your hex wrenches. When adjusting, make adjust-

when properly adjusted is 0.003"–0.006".

ments in small increments. Attempting to reduce

backlash to less than 0.003" is impractical and

Digital Readout Unit

will add unnecessary wear to both the leadscrews

and the leadscrew nuts.

To adjust the X-axis leadscrew:

Battery Replacement

1. Locate the X-axis leadscrew nut under the

If

the digital

readout unit stops

functioning,

the

middle of the table. The head on the adjust-

battery must be replaced.

ment screws face to the right (Figure 56).

To replace the digital readout unit battery:

1. Use a wide (#3) standard screwdriver or the

Location of

edge of a coin to remove the battery cover

Adjustment Screws

(Figure 57).

Figure 56. X-axis leadscrew adjusters.

2.Tighten the adjustment screws.

3.Test the adjustment by turning one of the longitudinal handwheels. The ideal amount

of play when properly adjusted is 0.003"– 0.006".

3. Replace the battery cover.

-42- Model G0704 (Mfg. since 09/09)