Lash Adjustment; Feed Shaft Spring Tension - Grizzly G9986 Instruction Manual

Lash Adjustment

The Model G9986 features a lash adjustment set
screw for the quill. Quill lash is the freeplay in the
quill as it moves up and down. Having too much
lash in the quill makes the quill prone to vibration
and runout. Setting the quill lash too tight makes
it difficult to move the quill up and down. The
goal is to find the "sweet spot" where there is the
perfect balance between ease of movement and
restricted quill lash.
Tools Needed
Hex Wrench 3mm .............................................. 1
Wrench 10mm ................................................... 1
Figure 23. Quill lash set screw.
To set the quill lash set screw:
1. Loosen the jam nut that locks the set screw
in place.
2. Move the downfeed up and down with one
hand and tighten the set screw with the other
hand until you feel a light drag on the quill as
you move it up and down.
3.
Slowly loosen the set screw while moving the
quill up and down. Stop moving the set screw
when you feel all quill drag disappear.
4. Using the hex wrench, hold the set screw in
place and tighten the jam nut.
Model G9986 8" Drill Press
Feed Shaft Spring
The feed shaft return spring is adjusted at the
factory. Only adjust the feed shaft return spring if
you are having troubles with the return pressure
and you have first adjusted the quill lash.
Qty
Figure 24. Feed shaft return spring assembly.
Tension
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