Grizzly Gear-Head G9036 - Manual (Page 51)

Model g9036 Mfg. 7/08+
-49-
symptom possible Cause possible solution
entire machine
vibrates
excessively upon
startup and while
running. 1. Workpiece is unbalanced.
2. Worn or broken gear present.
3. Chuck or faceplate has become unbalanced.
4. spindle bearings at fault.
1. reinstall workpiece so it is as centered with the
spindle bore as possible.
2. inspect gears and replace if necessary.
3. rebalance chuck or faceplate; contact a local
machine shop for help.
4. tighten or replace spindle bearings.
Cutting tool
or machine
components
vibrate
excessively
during cutting. 1. tool holder not tight enough.
2. Cutting tool sticks too far out of tool holder;
lack of support.
3. gibs are out of adjustment.
4. dull cutting tool.
5. incorrect spindle speed or feed rate.
1. Check for debris, clean, and retighten.
2. reinstall cutting tool so no more than
1 ⁄
3
of the total
length is sticking out of tool holder.
3. tighten gib screws at affected component.
4. replace or re sharpen cutting tool.
5. use the recommended spindle speed or feed rate.
Can't remove
tapered tool from
tailstock quill. 1. Quill had not retracted all the way back into the
tailstock.
2. debris was not removed from taper before
inserting into quill.
1. turn the quill handwheel until it forces taper out of
quill.
2. Always make sure that taper surfaces are clean.
Cross slide,
compound rest,
or carriage
feed has sloppy
operation. 1. gibs are out of adjustment.
2. handwheel is loose.
3. lead screw mechanism worn or out of
adjustment.
1. tighten gib screw(s).
2. tighten handwheel fasteners.
3. tighten any loose fasteners on lead screw
mechanism.
Cross slide,
compound rest,
or carriage feed
handwheel is
hard to move. 1. gibs are loaded up with shavings or grime.
2. gib screws are too tight.
3. Backlash setting too tight (cross slide only).
4. Bedways are dry.
1. remove gibs, clean ways/dovetails, lubricate, and
readjust gibs.
2. loosen gib screw(s) slightly, and lubricate
bedways.
3. slightly loosen backlash setting by loosening the
locking screw and adjusting the spanner ring at the
end of the handle.
4. lubricate bedways and handles.
Bad surface
finish. 1. Wrong rpM or feed rate.
2. dull tooling or poor tool selection.
3. too much play in gibs.
4. tool too high.
1. Adjust for appropriate rpM and feed rate.
2. sharpen tooling or select a better tool for the
intended operation.
3. tighten gibs.
4. lower the tool position.
inaccurate
turning results
from one end of
the workpiece to
the other. 1. headstock and tailstock are not properly
aligned with each other.
1. realign the tailstock to the headstock spindle bore
center line.
Chuck jaws won't
move or don't
move easily. 1. Chips lodged in the jaws. 1. remove jaws, clean and lubricate chuck threads,
and replace jaws.
Carriage won't
feed, or hard to
move. 1. gears are not all engaged or broken.
2. gibs are too tight.
3. loose screw on the feed handle.
4. lead screw shear pin has sheared. 1. Adjust gear positions or replace.
2. loosen gib screw(s) slightly.
3. tighten.
4. Correct the cause of shear pin breakage, and
replace shear pin.
tailstock quill will
not feed out of
tailstock. 1. Quill lock lever is tightened down. 1. turn lever counterclockwise.
operation and Work results
troubleshooting