Adjusting Gib - Grizzly T30943 Owner's Manual

Adjusting Gib

The goal of adjusting the gib screws is to
remove sloppiness or "play" from the car-
riage without over-adjusting them to the
point where the carriage becomes stiff and
difficult to move.
In general, a loose gib causes poor fin-
ishes and tool chatter; however, an over-
tightened gib causes premature wear and
makes it difficult to turn the elevation
levers.
The guides on this tool use a long steel
gib that is positioned between the sliding
carriage and the frame. There are five gib
screws (see Figure 28) located along the
length of the gib, which move and hold the
gib. Depending upon which direction the
gib moves, the space between the car-
riage and frame increases or decreases.
The gib adjustment process usually
requires some trial-and-error. Repeat the
adjustment process as necessary until
you find the best balance between loose
and stiff movement. The ideal gib adjust-
ment is one where a small amount of drag
or resistance is present, yet the levers are
still easy to move.
The gib pressure is applied by five set
screws. Hex nuts secure these set screws
in place, so they will not loosen during
operation.
Model T30943/T30944 (Mfd. Since 10/19)
Tools Needed
Open-End Wrench 8mm ........................... 1
Hex Wrench 2.5mm .................................. 1
To adjust gib:
1. DISCONNECT TOOL FROM POWER!
2. Loosen jam nuts on five set screws
shown in Figure 28, and adjust each
set screw the same amount as follows:
— To tighten gib, rotate set screws
clockwise.
— To loosen gib, rotate set screws
counterclockwise.
Figure 28. Location of gib screws.
3. Move carriage up and down with eleva-
tion levers. Repeat adjustments until
gib pressure is satisfactory.
4. To secure position, hold set screws in
place with wrench and tighten jam nuts.
Qty.
-27
-